Analyzing the FUD Malware Obfuscation Engine BatCloak


In our recent investigation, we discovered the use of heavily obfuscated batch files utilizing the advanced BatCloak engine to deploy various malware families at different instances. Running analysis and sample collection from September 2022 to June 2023, we found that these batch files are designed to be fully undetectable (FUD) and have demonstrated a remarkable ability to persistently evade security solutions. As a result, threat actors can load various malware families and exploits by leveraging highly obfuscated batch files seamlessly. Our initial research titled “The Dark Evolution: Advanced Malicious Actors Unveil Malware Modification Progression” delves into the continuing evolution of BatCloak, uncovering the modifications that have propelled modern malware to new levels of security evasion.

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