Hackers Exploit Log4j Vulnerability to Infect Computers with Khonsari Ransomware
Romanian cybersecurity technology company Bitdefender on Monday revealed that attempts are being made to target Windows machines with a novel ransomware family called Khonsari as well as a remote access Trojan named Orcus by exploiting the recently disclosed critical Log4j vulnerability.
The attack leverages the remote code execution (RCE) flaw to download an additional payload, a .NET binary, from a remote server that encrypts all the files with the extension “.khonsari” and displays a ransom note that urges the victims to make a Bitcoin payment in exchange for recovering access to the files.
Tracked as CVE-2021–44228, the RCE vulnerability is also known by the monikers “Log4Shell” or “Logjam” and impacts versions 2.0-beta9 to 2.14.1 of the software library. In simple terms, the bug could force an affected system to download malicious software, giving the attackers a digital beachhead on servers located within corporate networks.