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Malware Madness: Detecting the Sneaky Remcos RAT Obfuscation Technique
Threat actors love obfuscation, and they’ve got more tricks than a magician at a children’s party. Recently, I stumbled upon a VBS file with over 13,000 lines of garbage code hiding the Remcos RAT payload. It was like finding a needle in a haystack, but…
Hot Take:
Move over, cryptic crossword puzzles. The new game in town is decoding malicious VBS scripts! Who knew that hackers were secretly training to be the next James Joyce, filling their code with as much gibberish and redundancy as a late-night infomercial? Turns out, when it comes to obfuscation, the motto is “more is more.” Who needs elegance when you can have 143 identical functions instead?
Key Points:
- Threat actors are employing obfuscation techniques to make their malicious code harder to detect.
- Recent discovery: a VBS script used as a first-stage downloader for the Remcos RAT.
- The VBS file contained 143 identical copies of one function and 119 of another.
- Simple but effective obfuscation technique: redundancy and repeated comments.
- Main payload hidden among the repetitive garbage code.
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