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Home Security

Researchers Uncover First Use Of Log4Shell Flaw In Attack

TND News Desk by TND News Desk
December 20, 2021
in Security
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BitDefender recently discovered the first ransomware family installed directly through Log4Shell exploits. In their statement, the researchers pointed out that the exploit downloads a Java class, which is loaded and executed by the Log4j application.

After it was loaded, it would download a .NET binary from the same server to install new ransomware known as Khonsari.

While the name appears as an extension for encrypted files, it is also used in the ransom note. Since a public exploit was released for Log4Shell, attackers have been scrambling to exploit the vulnerability.

The vulnerability allows attackers to easily identify vulnerable devices or execute code supplied by a remote site.

Giving details on the Khonsari ransomware, Michael Gillespie explained that Khonsari uses valid encryption and is secure.

However, an irregularity observed in its ransom note does not offer room for how to reach the threat actor. This suggests that Khonsari may not be ransomware, but instead a wiper.

For more information, read the original story in BleepingComputer.

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