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Beware of Fake Microsoft Emails Exploiting Microsoft 365 Vulnerabilities

 

The internet is rife with scams, and the latest involves hackers exploiting vulnerabilities in the Microsoft 365 Admin Portal to send fraudulent emails directly from legitimate Microsoft.com accounts. These emails bypass spam filters, giving them an appearance of credibility, but their true purpose is extortion. These scam emails claim to have sensitive images or videos of the recipient in compromising situations. To prevent this alleged content from being shared, the recipient is asked to pay a ransom—often in Bitcoin. This type of cybercrime, known as “sextortion,” is designed to prey on fear and desperation, making victims more likely to comply with the scammer’s demands. 

Unfortunately, sextortion scams are becoming increasingly common. While tech companies like Microsoft and Instagram implement protective measures, hackers find new ways to exploit technical vulnerabilities. In this case, scammers took advantage of a flaw in the Microsoft 365 Message Center’s “share” function, commonly used for legitimate service advisories. This loophole allows hackers to send emails that appear to come from a genuine Microsoft.com address, deceiving even cautious users. To identify such scams, it is crucial to evaluate the content of the email. Legitimate companies like Microsoft will never request payment in Bitcoin or other cryptocurrencies. 

Additionally, scammers often include personal information, such as a birthday, to make their claims more believable. However, it is important to remember that such information is easily accessible and does not necessarily mean the scammer has access to more sensitive data. Victims should also remember that scammers rarely have the incriminating evidence they claim. These tactics rely on psychological manipulation, where the fear of exposure often outweighs rational decision-making. Staying calm and taking deliberate action, such as verifying the email with official Microsoft support, can prevent falling prey to these schemes. Reporting such emails not only protects individual users but also helps cybersecurity teams track and combat the criminals behind these campaigns. 

Microsoft is actively investigating this criminal activity, aiming to close the exploited loopholes and prevent future scams. In the meantime, users must remain vigilant. Keeping software up to date, enabling multi-factor authentication, and using strong passwords can help mitigate risks. A scam email may look convincing, but its demands reveal its true intent. Always approach threatening emails critically, and when in doubt, seek guidance from the appropriate channels. By cultivating a habit of skepticism and digital hygiene, users can strengthen their defenses against cybercrime. Awareness and timely action are essential for navigating the modern threat landscape and ensuring personal and organizational security.

Cybercriminals Impersonate Government Employees to Spread IRS Tax Frauds

 

At end of the 2021 IRS income tax return deadline in the United States, cybercriminals were leveraging advanced tactics in their phishing kits, which in turn granted them a high delivery success rate of spoofed e-mails with malicious attachments. 

On April 18th, 2022, a notable campaign was detected which invested phishing e-mails imitating the IRS, and in particular one of the industry vendors who provide services to government agencies which include e-mailing, Cybercriminals chose specific seasons when taxpayers are all busy with taxes and holiday preparations, which is why one should be extra cautious at these times.

The impersonated IT services vendor is widely employed by key federal agencies, including the Department of Homeland Security, as well as various state and local government websites in the United States. The detected phishing e-mail alerted victims about outstanding IRS payments, which should be paid via PayPal, and included an HTML attachment which looked like an electronic invoice. Notably, the e-mail has no URLs and was delivered to the victim's mailbox without being tagged as spam. The e-mail was delivered through many "hops" based on the inspected headers, predominantly using network hosts and domains registered in the United States.

It is worth mentioning that none of the affected hosts had previously been 'blacklisted,' nor had any evidence of bad IP or anomalous domain reputation at the time of identification. The bogus IRS invoice's HTML attachment contains JS-based obfuscation code. Further investigation revealed embedded scenarios which detected the victim's IP (using the GEO2IP module, which was placed on a third-party WEB-site), most likely to choose targets or filter by region. 

After the user views the HTML link, the phishing script shall prompt the user to enter personal credentials, impersonating the Office 365 authentication process with an interactive form.

The phishing-kit checks access to the victim's e-mail account through IMAP protocol once the user enters personal credentials. The actors were utilizing the "supportmicrohere[.]com" domain relying on the de-obfuscated JS content. 

Threat actors most likely tried to imitate Microsoft Technical Support and deceive users by utilizing a domain with similar spelling. The script intercepts the user's credentials and sends them to the server using a POST request. Login and password are sent to the jbdelmarket[.]com script through HTTP POST. A series of scripts to examine the IP address of the victim is hosted on the domain jbdelmarket[.]com. The phishing e-header emails include multiple domain names with SPF and DKIM records. 

A Return-Path field in the phishing e-mail was set as another e-mail controlled by the attackers which gather data about e-mails that were not sent properly. The Return-Path specifies how and where rejected emails will be processed, and it is used to process bounces from emails.

Ukrainian CERT Alerts Citizens of Phishing Attacks Using Hacked Accounts

 

The Computer Emergency Response Team of Ukraine (CERT-UA) has cautioned of new phishing attacks directed at Ukrainian citizens, which use hijacked email accounts belonging to three separate Indian businesses to infiltrate their inboxes and steal sensitive data. 

The emails arrive with the subject line "" (meaning "Attention") and pretend to be from a domestic email service named Ukr.net, but the sender's email address is "muthuprakash.b@tvsrubber[.]com," according to the agency. The messages allegedly alert recipients of an unauthorised attempt to log in to their accounts from an IP address based in Donetsk, Ukraine, and urge them to change their passwords immediately by clicking on a link. 

CERT-UA noted in a Facebook post over the weekend, "After following the link and entering the password, it gets to the attackers. In this way, they gain access to the email inboxes of Ukrainian citizens." 

The fact that TVS Rubber is an automotive company situated in the Indian city of Madurai suggests that the phishing emails were distributed through an already compromised email account. In a further update, CERT-UA stated that it had discovered an additional 20 email addresses used in the attacks, some of which belonged to sysadmins and faculty members at the Ramaiah University of Applied Sciences, an academic institution in Bengaluru, India. 

An email address from Hodek Vibration Technologies Pvt. Ltd., an India-based automotive company that designs and manufactures dampers for cars, light and heavy commercial vehicles, and other industrial equipment, is also featured in the list. 

"All these mailboxes have been compromised and are being used by the Russian Federation's special services to carry out cyberattacks on Ukrainian citizens," the agency said. 

The news comes as NATO states unanimously approved to admit Ukraine as a "Contributing Participant" to the Cooperative Cyber Defence Centre of Excellence (CCDCOE), as Russia's military invasion of the country entered its second week and cyber strikes poured down on government and commercial targets. 

"Ukraine's presence in the Centre will enhance the exchange of cyber expertise, between Ukraine and CCDCOE member nations. Ukraine could bring valuable first-hand knowledge of several adversaries within the cyber domain to be used for research, exercises and training," Col Jaak Tarien, director of CCDCOE, said in a statement.