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Windows Hello
2FA. Cyber Security Microsoft Azure Plaintext Windows 10 Windows Hello

Microsoft Azure Credentials Exposed in Plaintext by Windows 365

 

Mimikatz has been used by a vulnerability researcher to dump a user's unencrypted plaintext Microsoft Azure credentials from Microsoft's new Windows 365 Cloud PC service. Benjamin Delpy designed Mimikatz, an open-source cybersecurity software that allows researchers to test various credential stealing and impersonation vulnerabilities.

Microsoft's Windows 365 cloud-based desktop service went live on August 2nd, allowing customers to rent Cloud PCs and access them via remote desktop clients or a browser. Microsoft offered free virtual PC trials, which rapidly sold out as consumers hurried to receive their two-month free Cloud PC. 

Microsoft announced their new Windows 365 cloud-based virtual desktop experience at the Inspire 2021 conference, which allows organizations to deploy Windows 10 Cloud PCs, as well as Windows 11 eventually, on the cloud. This service is built on top of Azure Virtual Desktop, but it has been modified to make managing and accessing a Cloud PC easier. 

Delpy told that he was one of the lucky few who was able to receive a free trial of the new service and began testing its security. He discovered that the brand-new service allows a malicious programme to dump logged-in customers' Microsoft Azure plaintext email addresses and passwords. The credential dumps are carried out using a vulnerability he identified in May 2021 that allows him to dump plaintext credentials for Terminal Server users. While a user's Terminal Server credentials are encrypted when kept in memory, Delpy claims he could decrypt them using the Terminal Service process. 

To test this technique, BleepingComputer used a free Cloud PC trial on Windows 365. They entered the "ts::logonpasswords" command after connecting through the web browser and started mimikatz with administrative privileges, and mimikatz promptly dumped their login credentials in plaintext. 

While mimikatz was designed for researchers, threat actors frequently use it to extract plaintext passwords from the LSASS process' memory or perform pass-the-hash attacks utilizing NTLM hashes due to the power of its different modules. Threat actors can use this technique to spread laterally across a network until they gain control of a Windows domain controller, allowing them to take control of the entire Windows domain.

To protect against this method, Delpy recommends 2FA, smart cards, Windows Hello, and Windows Defender Remote Credential Guard. These security measures, however, are not yet accessible in Windows 365. Because Windows 365 is oriented toward enterprises, Microsoft is likely to include these security protections in the future, but for the time being, it's crucial to be aware of the technique.
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OTP
2FA. Alien Malware malware OTP

A new Malware that can intercept your OTP and bypass Two Factor Authentication


For most of our accounts be it Bank accounts or social media accounts, we rely on two-factor authentication and OTP (one time password); thinking it the most trustable and impenetrable security. But we ought to think again as a new android malware, "Alien" with its remote access threat tool can steal 2FA codes and OTP as well as sniff notifications.

Discovered by ThreatFabric, the Trojan Alien has been offered as a Malware-as-a-Service (MaaS) making rounds on underground hacking forums. Though this is not the first malware to access OTPs, Ceberus (malware gang with a similar code) has already been there and done that but Google's security found a way to detect and clean devises of Cerebus. Inspired and evolved from the same code, Alien has yet to be caught by a security server.

With the remote access feature, Alien can not only seize passwords and login credentials but also grant hackers access to the device to use the stolen passwords. Alien can also perform the following tasks: 

  • Overlay on another App 
  • Steal 2FA and OTP 
  • Read Notifications 
  • Collect Geo-location data 
  • Forward Calls 
  • Install other Apps 
  • Steal Contacts 
  • Provide access to the device 
  • Log Keyboard Input 
  • Send Messages 

This set of activities makes this malware highly dangerous and the device infected with it completely transparent to the hacker and to think it is offered as MaaS. The malware deploys TeamViewer and through it reads the devise's screen, notifications, harvest OTPs and other data - giving full reign of your device to the hacker to attempt fraud, steal money and data.

 How is it Spreading? 

According to ThreatFabric, the malware is transmitting via phishing emails and third-party applications. Researchers found that Alien was sporting fake logins for 226 android apps, some of them quite popular like Snapchat, Telegram, Facebook, Gmail, WhatsApp, etc. Many of them were banking and e-commerce apps, there's no surprise there! These banking apps were from Spain, Germany, the US, Italy, France, Poland, Australia, and the UK.
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