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Video Reviews - Security and Privacy
Kaspersky Endpoint Security 11 vs CXK-NMSL ransomware
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<blockquote data-quote="Andy Ful" data-source="post: 872842" data-attributes="member: 32260"><p>When I made a closer look at a code of this BAT, I found a few "certutil -decode" commands after many "certutil -encode" commands. Some files were hidden in the BAT file as an array of bytes, like for example the whole mp3 file. But, the files extracted/decoded from the malware were not related to encrypting files on disk. As [USER=7463]@cruelsister[/USER] noticed, the ransomware job was done by very simple code. The malware followed this path:</p><p>Loop (rename file ---> encode to another file by using "certutil -encode")</p><p>delete the renamed files</p><p>.... (some additional actions)</p><p>Delete traces</p></blockquote><p></p>
[QUOTE="Andy Ful, post: 872842, member: 32260"] When I made a closer look at a code of this BAT, I found a few "certutil -decode" commands after many "certutil -encode" commands. Some files were hidden in the BAT file as an array of bytes, like for example the whole mp3 file. But, the files extracted/decoded from the malware were not related to encrypting files on disk. As [USER=7463]@cruelsister[/USER] noticed, the ransomware job was done by very simple code. The malware followed this path: Loop (rename file ---> encode to another file by using "certutil -encode") delete the renamed files .... (some additional actions) Delete traces [/QUOTE]
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