Lemon Duck wants to steal your PC resources to mine cryptocurrency

Unpatched Microsoft Commutation servers go along to be targeted by malicious groups. A post by Cisco Talos explains that a cryptocurrency botnet chosen Lemon Duck is being used by operators to target vulnerable Microsoft Substitution servers (via ZDNet). The botnet's goal is to install a payload onto devices that can then be used to steal computer processing power to mine the Monero cryptocurrency.

Microsoft took several steps to accost the effects of the Commutation server vulnerabilities. The company rolled out mitigation tools and updated Microsoft Defender Antivirus to accost the issues. As of a March 25 security report from Microsoft, 92% of known worldwide Commutation IPs are patched or mitigated. Despite these efforts, there are nevertheless a big number of unpatched devices.

Talos explains why information technology has "medium confidence" that these recent events are related to Microsoft Exchange server vulnerabilities:

While analyzing telemetry related to ongoing Lemon Duck campaigns, nosotros identified malicious activity existence conducted on endpoints whose host names indicated they may be mail servers running Microsoft Exchange. This elevated our level of confidence that they may have been compromised by exploitation attempts targeting the previously described Microsoft Exchange vulnerabilities, with variants of known web shells being uploaded following successful organisation compromise.

Lemon Duck also utilizes Cobalt Strike, which is a software platform used past security penetration testers and besides as malicious actors. Using Cobalt Strike represents an evolution for Lemon Duck, according to Talos. The researchers state that using Cobalt Strike shows that the people backside Lemon Duck "continue to refine their approach to the attack lifecycle over time as they identify opportunities to increase their efficiency too equally the effectiveness of their attacks."

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