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Showing posts with label APT actors. Show all posts
SPICA
APT actors COLDRIVER ColdRiver APT Custom backdoor Cyber Attacks Google TAG Russian threat actors SPICA

ColdRiver APT: Google TAG Warns Against Russian APT Group is Using a Custom Backdoor


Google has warned that a Russia-linked threat actor named ‘COLDRIVER’ which is expanding its targets has also been developing custom malware. 

ColdRiver APT

The ColdRiver APT (aka “Seaborgium“, “Callisto”, “Star Blizzard”, “TA446”) is a Russian cyberespionage outfit that has been targeting government officials, military personnel, journalists and think tanks since at least 2015.

The threat actor has previously engaged in ongoing phishing and credential theft efforts that resulted in intrusions and data theft. Although specialists have noticed efforts targeting the Baltics, Nordics, and Eastern Europe regions, including Ukraine, the APT predominantly targets NATO member states.

Google TAG researchers have warned against COLDRIVER, claiming that it is enhancing its tactics techniques and procedures (TTPs), in order to evade detection. 

TAG has recently seen COLDRIVER use phishing efforts to spread bespoke malware using PDFs as lure materials. Google experts discovered and stopped these attempts by adding all known domains and hashes to Safe Browsing blocklists.

In November 2022, TAG observed that COLDRIVER was sending its targets malicious PDF documents from their fraudulent accounts. Threat actors asked for the recipient's feedback on fresh opinion pieces or other kinds of publications that they were hoping to publish using the lure materials. The victims see an encrypted text when they view the PDF.

In case the targets fail to read the content, following which they contact the threat actors, they receive a link from the cyberspies to a decryption tool located on the threat actors' website. After downloading and running the tool, a backdoor—tracking as SPICA—is installed and a bogus document appears. 

“Once executed, SPICA decodes an embedded PDF, writes it to disk, and opens it as a decoy for the user. In the background, it establishes persistence and starts the main C2 loop, waiting for commands to execute,” reads TAG’s analysis. 

Spica is a Rust backdoor that uses JSON over websockets for C2. Spica supports multiple capabilities, such as: 

  • Executing arbitrary shell commands. 
  • Stealing cookies from Chrome, Firefox, Opera and Edge. 
  • Uploading and downloading files. 
  • Perusing the filesystem by listing the contents of it. 
  • Enumerating documents and exfiltrating them in an archive 
  • There is also a command called “telegram,” however the functionality of this command is unclear.

An obfuscated PowerShell command that generates a scheduled activity called CalendarChecker is how the infection stays persistent.

The Russian APT has reportedly been using SPICA since at least November 2022, while the researchers have only observed its use since early September 2023.

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Iran
Advanced Persistent Threat APT APT 32 APT actors APT attacks APT Campaigns APT Group APT27 APT34 APT43 Cyber Security Cybercriminal Tactics Iran

Analysing Advanced Persistent Threats 2023: Tactics, Targets, and Trends

 

The term "Advanced Persistent Threat" (APT) denotes a highly specialised category of cyber adversaries within the field of cybersecurity. These entities distinguish themselves through advanced skill sets and substantial access to resources, often employing sophisticated tools and techniques. APTs typically exhibit state sponsorship, indicating either direct or indirect government support or intricate ties to organized crime syndicates. 

This connection to state actors or criminal groups grants them a level of persistence and capability that far exceeds that of conventional cybercriminals. In 2023, the cybersecurity landscape has witnessed the persistent activity of several Advanced Persistent Threat (APT) groups, with attributions largely pointing to nation-states, notably Iran and China. These sophisticated entities operate at the forefront of cyber capabilities, employing advanced tactics, techniques, and procedures. Their activities extend beyond conventional cybercriminal motives, often involving strategic objectives tied to geopolitical influence, military espionage, or the compromise of critical infrastructure. As the year unfolds, the vigilance of cybersecurity experts remains crucial in monitoring and responding to the evolving tactics employed by these APT groups, reflecting the ongoing challenge of safeguarding against state-sponsored cyber threats.  

Here’s a summary of some of the most active and prominent APT Groups as of 2023:  

1) APT39  

APT39, believed to be associated with Iran, has emerged as a notable player in the cyber threat landscape in 2023. This advanced persistent threat group strategically directs its efforts towards the Middle East, with a specific focus on key sectors such as telecommunications, travel, and information technology firms. APT39 employs a sophisticated arsenal of cyber tools, including the use of SEAWEED and CACHEMONEY backdoors, along with spearphishing techniques for initial compromise. 

2) APT35 

APT35, believed to be affiliated with Iran, has solidified its position as a significant threat in 2023, honing its focus on military, diplomatic, and government personnel across the U.S., Western Europe, and the Middle East. Employing a sophisticated toolkit that includes malware such as ASPXSHELLSV and BROKEYOLK, the group employs a multifaceted approach, leveraging spearphishing and password spray attacks to infiltrate target networks. APT35's strategic interests span various sectors, encompassing U.S. and Middle Eastern military, diplomatic and government personnel, as well as organizations in the media, energy, defense industrial base (DIB), and the engineering, business services, and telecommunications sectors.  

3) APT41 

APT41, believed to be linked to China, continues to pose a significant cyber threat in 2023, targeting a diverse range of sectors including healthcare, telecommunications, high-tech, education, and news/media. Renowned for employing an extensive arsenal of malware and spear-phishing tactics with attachments, APT41 demonstrates a multifaceted approach, engaging in both state-sponsored espionage and financially motivated activities. Researchers have identified APT41 as a Chinese state-sponsored espionage group that has also ventured into financially motivated operations. Active since at least 2012, the group has been observed targeting industries such as healthcare, telecom, technology, and video games across 14 countries. APT41's activities overlap, at least partially, with other known threat groups, including BARIUM and Winnti Group, underscoring the complexity and interconnected nature of cyber threats associated with this sophisticated actor.  

4) APT40 

APT40, associated with China, maintains a strategic focus on countries crucial to China's Belt and Road Initiative, with a particular emphasis on the maritime, defense, aviation, and technology sectors. Notably active in 2023, APT40 employs a diverse range of techniques for initial compromise, showcasing their sophisticated capabilities. These methods include web server exploitation, phishing campaigns delivering both publicly available and custom backdoors, and strategic web compromises. APT40's modus operandi involves the utilization of compromised credentials to access connected systems and conduct reconnaissance. The group further employs Remote Desktop Protocol (RDP), Secure Shell (SSH), legitimate software within victim environments, an array of native Windows capabilities, publicly available tools, and custom scripts to facilitate internal reconnaissance. This comprehensive approach highlights APT40's adaptability and underscores the persistent and evolving nature of cyber threats in the geopolitical landscape. 

5) APT31 

Focused on government entities, international financial organizations, aerospace, and defense sectors, among others, APT31, also known as Zirconium or Judgment Panda, stands out as a formidable Advanced Persistent Threat group with a clear mission likely aligned with gathering intelligence on behalf of the Chinese government. Operating in 2023, APT31 exhibits a strategic approach, concentrating on exploiting vulnerabilities in applications like Java and Adobe Flash to achieve its objectives. Similar to other nation-state actors, the group's primary focus is on acquiring data relevant to the People's Republic of China (PRC) and its strategic and geopolitical ambitions. The group's activities underscore the ongoing challenge of safeguarding sensitive information against sophisticated state-sponsored cyber threats. 

6) APT30 

APT30, believed to be associated with China, distinguishes itself through its noteworthy focus on long-term operations and the infiltration of air-gapped networks, specifically targeting members of the Association of Southeast Asian Nations (ASEAN). Employing malware such as SHIPSHAPE and SPACESHIP, this threat actor utilizes spear-phishing techniques to target government and private sector agencies in the South China Sea region. Notably, APT30's objectives appear to lean towards data theft rather than financial gain, as they have not been observed targeting victims or data that can be readily monetized, such as credit card information or bank credentials. Instead, the group's tools demonstrate functionality tailored for identifying and stealing documents, with a particular interest in those stored on air-gapped networks. APT30 employs decoy documents on topics related to Southeast Asia, India, border areas, and broader security and diplomatic issues, indicating a strategic approach to lure in and compromise their intended targets in the geopolitical landscape. 

7) APT27 

APT27 believed to be operating from China, is a formidable threat actor specializing in global intellectual property theft across diverse industries. Employing sophisticated malware such as PANDORA and SOGU, the group frequently relies on spear-phishing techniques for initial compromise. APT27 demonstrates versatility in deploying a wide array of tools and tactics for its cyberespionage missions. Notably, between 2015 and 2017, the group executed watering hole attacks through the compromise of nearly 100 legitimate websites to infiltrate victims' networks. Targeting sectors including government, information technology, research, business services, high tech, energy, aerospace, travel, automotive, and electronics, APT27 operates across regions such as North America, South-East Asia, Western Asia, Eastern Asia, South America, and the Middle East. The group's motives encompass cyberespionage, data theft, and ransom, employing a diverse range of malware including Sogu, Ghost, ASPXSpy, ZxShell RAT, HyperBro, PlugX RAT, Windows Credential Editor, and FoundCore. 

8) APT26 

APT26, suspected to have origins in China, specializes in targeting the aerospace, defense, and energy sectors. Recognized for its strategic web compromises and deployment of custom backdoors, this threat actor's primary objective is intellectual property theft, with a specific focus on data and projects that provide a competitive edge to targeted organizations within their respective fields. The group's tactics involve the utilization of associated malware such as SOGU, HTRAN, POSTSIZE, TWOCHAINS, and BEACON. APT26 employs strategic web compromises as a common attack vector to gain access to target networks, complementing their approach with custom backdoors deployed once they penetrate a victim's environment.  

9) APT25 

APT25, also recognized as Uncool, Vixen Panda, Ke3chang, Sushi Roll, and Tor, is a cyber threat group with suspected ties to China. The group strategically targets the defense industrial base, media, financial services, and transportation sectors in both the U.S. and Europe. APT25's primary objective is data theft, and its operations are marked by the deployment of associated malware such as LINGBO, PLAYWORK, MADWOFL, MIRAGE, TOUGHROW, TOYSNAKE, and SABERTOOTH. Historically, the group has relied on spear-phishing techniques in its operations, incorporating malicious attachments and hyperlinks in deceptive messages. APT25 actors typically refrain from using zero-day exploits but may leverage them once they become public knowledge. The group's consistent focus on targeted sectors and methods underscores its persistence and intent to pilfer sensitive information from key industries in the U.S. and Europe. 

10) APT24 

APT24, also known as PittyTiger and suspected to have origins in China, conducts targeted operations across a diverse array of sectors, including government, healthcare, construction, mining, nonprofit, and telecommunications industries. The group has historically targeted organizations in countries such as the U.S. and Taiwan. APT24 is distinguished by its use of the RAR archive utility to encrypt and compress stolen data before exfiltration from the network. Notably, the stolen data primarily consists of politically significant documents, indicating the group's intention to monitor the positions of various nation-states on issues relevant to China's ongoing territorial or sovereignty disputes. Associated malware utilized by APT24 includes PITTYTIGER, ENFAL, and TAIDOOR. The group employs phishing emails with themes related to military, renewable energy, or business strategy as lures, and its cyber operations primarily focus on intellectual property theft, targeting data and projects that contribute to an organization's competitiveness within its field. 

11) APT23 

APT23, suspected to have ties to China, directs its cyber operations towards the media and government sectors in the U.S. and the Philippines, with a distinct focus on data theft of political and military significance. Unlike other threat groups, APT23's objectives lean towards traditional espionage rather than intellectual property theft. The stolen information suggests a strategic interest in political and military data, implying that APT23 may be involved in supporting more traditional espionage operations. The associated malware used by APT23 is identified as NONGMIN. The group employs spear-phishing messages, including education-related phishing lures, as attack vectors to compromise victim networks. While APT23 actors are not known for utilizing zero-day exploits, they have demonstrated the capability to leverage these exploits once they become public knowledge. 

12) APT22 

Also known as Barista and suspected to be linked to China, APT22 focuses its cyber operations on political, military, and economic entities in East Asia, Europe, and the U.S., with a primary objective of data theft and surveillance. Operating since at least early 2014, APT22 is believed to have a nexus to China and has targeted a diverse range of public and private sector entities, including dissidents. The group utilizes associated malware such as PISCES, SOGU, FLATNOTE, ANGRYBELL, BASELESS, SEAWOLF, and LOGJAM. APT22 employs strategic web compromises as a key attack vector, allowing for the passive exploitation of targets of interest. Additionally, threat actors associated with APT22 identify vulnerable public-facing web servers on victim networks, uploading webshells to gain access to the victim's network. This comprehensive approach underscores APT22's persistent and multifaceted tactics in carrying out intrusions and surveillance activities on a global scale. 

13) APT43 

Linked to North Korea, APT43 has targeted South Korea, the U.S., Japan, and Europe across various sectors, including government, education/research/think tanks, business services, and manufacturing. Employing spear-phishing and fake websites, the group utilizes the LATEOP backdoor and other malicious tools to gather information. A distinctive aspect of APT43's operations involves stealing and laundering cryptocurrency to purchase operational infrastructure, aligning with North Korea's ideology of self-reliance, thereby reducing fiscal strain on the central government. APT43 employs sophisticated tactics, creating numerous convincing personas for social engineering, masquerading as key individuals in areas like diplomacy and defense. Additionally, the group leverages stolen personally identifiable information (PII) to create accounts and register domains, establishing cover identities for acquiring operational tooling and infrastructure. 

14) Storm-0978 (DEV-0978/RomCom) 

Storm-0978, also known as RomCom, is a Russian-based cybercriminal group identified by Microsoft. Specializing in ransomware, extortion-only operations, and credential-stealing attacks, this group operates, develops, and distributes the RomCom backdoor, and its latest campaign, detected in June 2023, exploited CVE-2023-36884 to deliver a backdoor with similarities to RomCom. Storm-0978's targeted operations have had a significant impact on government and military organizations primarily in Ukraine, with additional targets in Europe and North America linked to Ukrainian affairs. The group is recognized for its tactic of targeting organizations with trojanized versions of popular legitimate software, leading to the installation of RomCom. Notably, ransomware attacks attributed to Storm-0978 have affected industries such as telecommunications and finance, highlighting the group's broad impact and the evolving nature of cyber threats in the geopolitical landscape. 

15) Camaro Dragon 

A Chinese state-sponsored hacking group named 'Camaro Dragon' has recently shifted its focus to infecting residential TP-Link routers with a custom malware called 'Horse Shell.' European foreign affairs organizations are the specific targets of this cyber campaign. The attackers utilize a malicious firmware exclusively designed for TP-Link routers, enabling them to launch attacks appearing to originate from residential networks rather than directly targeting sensitive networks. Check Point, the cybersecurity firm that uncovered this campaign, clarifies that homeowners with infected routers are unwitting contributors rather than specific targets. The infection is attributed to self-propagating malware spread via USB drives. Checkpoint identified updated versions of the malware toolset, including WispRider and HopperTick, with similar capabilities for spreading through USB drives. These tools are associated with other tools employed by the same threat actor, such as the Go-based backdoor TinyNote and a malicious router firmware implant named HorseShell. The shared infrastructure and operational objectives among these tools provide further evidence of Camaro Dragon's extensive and coordinated cyber activities. 

In conclusion, the cybersecurity landscape of 2023 has been defined by a substantial surge in Advanced Persistent Threat (APT) activities, reflecting a sophisticated and dynamic threat environment. This analysis has delved into the intricate and evolving nature of these threats, emphasizing the persistent and increasingly sophisticated endeavours of emerging and established APT groups. These actors, distinguished by high skill levels and substantial resources, often operate with state sponsorship or connections to organized crime, enabling them to execute complex and prolonged cyber campaigns. 

Throughout the year, APTs have prominently featured, executing meticulously planned operations focused on long-term infiltration and espionage. Their objectives extend beyond financial gain, encompassing geopolitical influence, military espionage, and critical infrastructure disruption, posing a significant threat to global stability and security. 

Key regions such as the Asia-Pacific (APAC), South America, Russia, and the Middle East have witnessed diverse APT activities, showcasing unique tactics and targeting various sectors. Notable incidents, including compromising secure USB drives, deploying remote access Trojans (RATs), and sophisticated spear-phishing campaigns, underscore the adaptability of APT groups. The emergence of new actors alongside well-established groups, utilizing platforms like Discord and exploiting zero-day vulnerabilities, highlights the need for enhanced cyber defenses and international cooperation. 

Incidents like the Sandworm attack and exploitation of Atlassian Confluence flaws exemplify the diverse and evolving nature of APT threats, emphasizing their technical prowess and strategic focus on critical sectors and infrastructure. In response, a comprehensive and adaptive approach involving robust security measures, intelligence sharing, and strategic collaboration is essential to effectively mitigate the multifaceted risks posed by these highly skilled adversaries in the ever-evolving cyber threat landscape.
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Technology
AI Chatbot APT actors Artificial Intelligence Chatbot ChatGPT Generative AI Technology

Increasing Threat of Generative AI Technology


Think of a drastic surge in advanced persistent threats (APTs), malware attacks, and organizational data breaches. An investigation on the case scenario revealed that these attacks are actually developed by threat actors who have access to generative AI.

However, it raises a question: who should be the culprit? The cybercriminals? The generative AI bots? The firms who develop these bots? Or perhaps the government that fails to come up with proper regulation and accountability? 

Generative AI Technology

Generative AI technology is another form of artificial intelligence that aids users in generating texts, images, sounds, and other content from inputs or instructions that are given in natural language.

Similar AI bots like ChatGPT, Google Bard, Perplexity, and others are made available to any online user who wishes to chat, generate human-like texts, and scripts, or even write complex codes. 

Although, one problem in common that these AI bots possess is their ability to produce offensive or harmful content on the basis of user input, which may violate ethical standards, inflict harm, or even be illegal.

These cases are why chatbots include security mechanisms onboard and content filters that could restrict output that may be harmful or malicious. However, how effective are these preventative methods for content monitoring, and how closely do they resemble cyber defense? The most recent chatbots are reportedly being used by hackers to develop and distribute malware. These chatbots can be "tricked" into creating spam and phishing emails, and they have even assisted bad actors in creating programs that bypass security safeguards and damage computer networks.

Bypassing Chatbot Security Filters

In order to improve their understanding of the problem, researchers investigated some malicious content-generation capabilities of chatbots and found ways to a few techniques used by fraudsters to get beyond chatbot security measures. For instance: 

  • The chatbot can generate practically anything imaginable if a user jailbreaks it and make it stay in character. As an illustration, some manipulators have developed prompts that turn the chatbot into a fictional character, such as Yes Man and DAN (Do Anything Now), which deceive the chatbot into thinking that it is exempt from following laws, moral principles, or other obligations.
  • Developing a fictional environment can also prompt the chatbot into behaving as if it is part of a film, series, or book, or a game player assigned a mission to complete or a conversation to follow. In this situation, the chatbot provides all the content it won't give otherwise. It can be tricked sometimes by character role play that uses words like "for educational purposes" or "for research and betterment of society" to bypass the filter. 
  • Another tactic used by threat actors is ‘reverse psychology,’ through which they persuade chatbots into revealing information, that they would not have displayed otherwise, due to community guidelines.

There are innumerable other ways these chatbots might be used to launch destructive cyberattacks; these methods for getting around ethical and social standards are simply the tip of the iceberg. Modern chatbots are AI-based systems trained on knowledge of the world as it exists today, so they are aware of weaknesses and how to exploit them. Thus, it is high time that online users and AI developers seek innovative ways to ensure safety and mitigate consequences that would otherwise result in destructive cyberspace.  

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North Korean Hackers
APT actors Binance Blockchain Crypto Cyber Crime Ethereum Lazarus Group North Korean Hackers

North Korean Cybercriminals Attempt to Steal $27M in ETH

Hacking organizations 'Lazarus' and 'APT38' supported by the North Korean government were responsible for the loss of $100 million worth of Ethereum from Harmony Horizon in June 2022. 

The funds and the seizure of stolen assets were reported to the authorities. The exploiters' activities closely resembled the attempt, which was undertaken on January 13, 2023, since more than $60 million was attempted to be laundered.

The Binance chain, Bitcoin, and Ethereum transfers are made possible through Harmony's Horizon Bridge. Numerous tokens worth $100,000,000  were taken from the network on June 23, 2022.

North Korean cybercriminals were actively shifting a portion of Harmony's Horizon bridge funds during the last weekend as the price of bitcoin approached $24,000. While several cryptocurrency exchanges instantly froze certain cash, Binance CEO Changpeng Zhao (CZ) claimed that some exchanges are not helpful in fighting crime, which made it easier to convert ETH to BTC.

According to reports, the APT38 was able to convert some of the $27 million in Ethers to Bitcoin and withdraw the money from exchanges. The Lazurus group has reportedly been shifting laundered money to a number of addresses in order to mask their true identity through multiple layers.

With the use of its Horizon Bridge, Harmony can transmit data to and from the Ethereum network, Binance Chain, and Bitcoin. On June 23, a number of tokens from the network valued at roughly $100 million were taken.

After the exploit, the Tornado Cash mixer processed 85,700 Ether, which was then deposited at various addresses. The hackers began transferring about $60 million of the stolen money via the Ethereum-based anonymity protocol RAILGUN on January 13. 350 addresses have been linked to the attack through numerous exchanges in an effort to escape detection, according to research by the cryptocurrency tracking tool MistTrack.

Cryptocurrency exchanges like Binance and Huobi have alerted authorities about stolen Harmony's Horizon Bridge funds by freezing them. This demonstrates how DeFi platforms and centralized exchanges are dependent on one another.





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RaaS
APT actors Chinese Hackers Command and Control(C2) Data Breach Encryption Log4Shell PowerShell RaaS

Cheerscrypt Spyware Attributed to Chinese APT Entity

The Emperor Dragonfly Chinese hacker group, notorious for frequently switching between several ransomware families to avoid detection, has been connected to the Cheerscrypt virus. 

The attacks were linked by the cybersecurity company Sygnia to a threat actor also dubbed Bronze Starlight and DEV-0401. The hacking gang seems to be a ransomware operation, but past research suggests that the Chinese government is interested in many of its victims.

Cheerscrypt is the most recent addition to a long range of ransomware families that the gang has previously used, including LockFile, Atom Silo, Rook, Night Sky, Pandora, and LockBit 2.0 in a little over a year.

Recently, Sygnia researched a Cheerscrypt ransomware operation that utilized Night Sky ransomware TTPs. The attackers then dropped a Cobalt Strike beacon linked to a C2 address formerly tied to Night Sky operations. 

The code for the Babuk ransomware, which was exposed online in June 2021, was used to develop the Cheerscrypt ransomware family, which Trend Micro first analyzed in May 2022. Cheerscrypt is one of several ransomware families used by the APT organization. The DEV-0401 group, unlike other ransomware gangs, oversees every stage of the assault chain directly, from the first access to the data theft. It does not rely on a system of affiliates.

A significant Log4Shell vulnerability in Apache Log4j was utilized by hackers in January 2022 assaults to acquire initial access to VMware Horizon servers. They subsequently dropped a PowerShell payload that was used to send an encrypted Cobalt Strike beacon. Apart from the beacon, the hackers also sent three Go-based tools: a keylogger that sent keystrokes to Alibaba Cloud, a customized version of the internet proxy tool iox, and the tunneling program NPS.

Trend Micro initially identified Cheerscrypt in May 2022, highlighting its capacity to target VMware ESXi servers as a component of a tried-and-true strategy known as double extortion to force its victims into paying the ransom or risk having their data exposed.

The hackers break into networks, take information, and encrypt devices just like other ransomware groups that target businesses. The victim is then coerced into paying a ransom through double-extortion methods using the data. The stolen data is posted on a data leak website when a ransom is not paid.

A PowerShell payload that can deliver an encrypted Cobalt Strike beacon has been dropped on VMware Horizon servers by infection chains that have exploited the major Log4Shell vulnerability in the Apache Log4j library.

Cheerscrypt and Emperor Dragonfly share initial access vectors, and lateral movement strategies, including the use of DLL side-loading to distribute the encrypted Cobalt Strike beacon. Notably, the ransomware gang is acting as a 'lone wolf' separated from the rest of the cybercrime community rather than as a RaaS (Ransomware-as-a-Service) platform for affiliates.






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Encryption
Antivirus APT actors Backdoor Chinese Hackers Command and Control(C2) CVE Cyber Crime Encryption

Middle East Targeted via Steganography

A hacktivist gang that has previously attacked an African country's stock exchange with malware and seized vast amounts of data is now focusing on the governments of several Middle Eastern countries.

ESET, a cybersecurity company, discovered Witchetty also known as LookingFrog for the first time in April 2022. It is thought to be closely associated with the state-sponsored Chinese threat actor APT10 formerly known as Cicada. The gang is also regarded as TA410 personnel, who have previously been connected to strikes against American energy suppliers.

A threat actor identified as Witchetty was seen by Broadcom's Symantec Threat Hunter Team utilizing steganography to conceal an unknown backdoor in a Windows logo.

The new malware uses steganography, a method for hiding a message in an openly available document, to extract dangerous code from a bitmap image of a previous version of the Microsoft Windows logo.

In the campaign that Symantec found, Witchetty is utilizing steganography to conceal backdoor software that is XOR-encrypted in an outdated Windows logo bitmap picture.

"By disguising the payload in this way, the attackers were able to host it on a reliable, cost-free service. Downloads from reputable servers like GitHub are much less likely to cause concern than downloads from a command-and-control (C&C) server that is under the control of an attacker" the researchers stated.

Backdoor employment

The employment of another backdoor known as Stegmap is highlighted in Symantec's most recent investigation of attacks between February and September 2022, when the organization attacked the governments of two Middle Eastern countries as well as the stock exchange of an African nation. 

Like many backdoors, Stegmap includes a wide range of features that enable it to do file manipulation operations, download and run executables, stop processes, and alter the Windows Registry. The hackers updated their toolset for this effort to target the vulnerabilities, and they used steganography to shield their harmful payload from antivirus software.

By taking advantage of the Microsoft Exchange ProxyShell (CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207) and ProxyLogon (CVE-2021-26855 and CVE-2021-27065) attack chains to drop web shells on susceptible servers, the threat actors acquire initial access to a network and launch the attack. 

According to the chronology of an attack on a Middle Eastern government organization, Witchetty maintained remote access for as long as six months and carried out a variety of post-exploitation activities, such as network enumeration and the installation of custom malware, up to September 1, 2022.

Governments and state institutions around the world, including those in Asia and Africa, continue to face active threats from TA410 and Witchetty. The best defense against such attacks is to implement security upgrades as soon as they are available. In the campaign that Symantec has identified, the hackers depend on last year's flaws to infiltrate the target network and take advantage of the subpar management of publicly accessible servers.



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malware
APK Files APT APT actors APT attacks cyber espionage DLL EU European Union Fancy Bear Malicious actor malware

FancyBear: Hackers Use PowerPoint Files to Deliver Malware

 

FancyBear: Hackers Use PowerPoint Files to Deliver Malware Cluster25 researchers have recently detected a threat group, APT28, also known as FancyBear, and attributed it to the Russian GRU (Main Intelligence Directorate of the Russian General Staff). The group has used a new code execution technique that uses mouse movement in Microsoft PowerPoint, to deliver Graphite malware.
 
According to the researchers, the threat campaign has been actively targeting organizations and individuals in the defense and government organizations of the European Union and East European countries. The cyber espionage campaign is believed to be still active.
 

Methodology of Threat Actor

 
The threat actor allegedly entices victims with a PowerPoint file claiming to be associated with the Organization for Economic Cooperation (OECD).
 
This file includes two slides, with instructions in English and French to access the translation feature in zoom. Additionally, it incorporates a hyperlink that plays a trigger for delivering a malicious PowerShell script that downloads a JPEG image carrying an encrypted DLL file.
 
The resulting payload, Graphite malware is in Portable Executable (PE) form, which allows the malware operator to load other malwares into the system memory.
 
“The code execution runs a PowerShell script that downloads and executes a dropper from OneDrive. The latter downloads a payload that extracts and injects in itself a new PE (Portable Executable) file, that the analysis showed to be a variant of a malware family known as Graphite, that uses the Microsoft Graph API and OneDrive for C&C communications.” States Cluster25, in its published analysis.
 
The aforementioned Graphite malware is a fileless malware that is deployed in-memory only and is used by malware operators to deliver post-exploitation frameworks like Empire. Graphite malware’s purpose is to allow the attacker to deploy other malwares into the system memory.
 
 
Based on the discovered metadata, according to Cluster25, the hackers have been preparing for the cyber campaign between January and February. However, the URLs used in the attacks were active in August and September.
 
With more hacker groups attempting to carry out such malicious cyber campaigns, the government and private sectors must deploy more powerful solutions to prevent future breaches and cyber attacks to safeguard their organizations.
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Vulnerability and Exploits
APT actors C&C Chinese Actors CISA & FBI CVE vulnerability NSA SQL Vulnerabilities and Exploits Vulnerability and Exploits

China's Attacks on Telecom Providers Were Exposed by US

 

Since 2020, US cybersecurity and intelligence agencies have cautioned about state-sponsored cyber attackers located in China using network vulnerabilities to target public and private sector enterprises.

Chinese hacking gangs have used publicly known vulnerabilities to infiltrate everything from unpatched small office/home office (SOHO) routers to moderate and even big enterprise networks, according to a joint cybersecurity alert released on Tuesday by the NSA, CISA, and the FBI. 

Several servers are used by China-linked APTs to create new email accounts, host command and control (C&C) domains, and connect with target networks, using hop points as an obfuscation strategy to mask its true location."Once within a telecommunications organization or network service provider, PRC state-sponsored cyber actors identified essential users and infrastructure, including systems critical to ensuring the stability of authentication, authorization, and accounting," as per the report. 

These threat actors are continually altering their techniques to avoid detection, according to US authorities, including watching network defenders' actions and adjusting current attacks to remain undiscovered. 

They were also seen changing the infrastructure and tools when the campaigns were made public. After stealing credentials to access underlying SQL databases, the attackers utilized SQL commands to discard user and admin credentials from key Remote Authentication Dial-In User Service (RADIUS) servers. The three US agencies have revealed that Chinese threat actors primarily exploit vulnerabilities in: 
  • Cisco (CVE-2018-0171, CVE-2019-15271, and CVE-2019-1652)
  • Citrix (CVE-2019-19781) 
  • DrayTek (CVE-2020-8515) 
  • D-Link (CVE-2019-16920) 
  • Fortinet (CVE-2018-13382) 
  • MikroTik (CVE-2018-14847) 
  • Netgear (CVE-2017-6862) 
  • Pulse ( (CVE-2020-29583) 

Open-source tools such as RouterSploit and RouterScan (vulnerability scanning framework) are used by threat actors to scan for vulnerabilities and conduct reconnaissance, allowing them to identify brands, models, and known problems that can be attacked. 

"Once within a network service provider, PRC state-sponsored cyber actors identified essential users and infrastructure, particularly systems critical to maintaining the security of authentication, authorization, and accounting," as per the joint advisory.

Lastly, the attackers altered or deleted local log files to eliminate proof of its presence and avoid discovery. Security updates should be applied as quickly as feasible, unneeded ports and protocols should be disabled to reduce the attack surface, and end-of-life network infrastructure which no longer receives security patches should be replaced, according to federal agencies.

Segmenting networks to prevent lateral movement and enabling robust monitoring on internet-exposed services to discover attack attempts as soon as possible are also recommended.
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