We added support for detecting executables ciphered with bitwise shift ciphers - ROR (shift right) and ROL (shift left) which was first reported from a sample from Mila's blog (contagiodump). Bitwise shifts are similar to multiple or division by 2's. This sample used a shift left of one position (rol 1) along with a 256byte XOR key.
Posts
Overview of Content Published in September
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Here is an overview of content I published in September: Blog posts:
b’Update: search-for-compression.py Version 0.0.8′ SANS ISC Diary entries:
YARA 4.5.0 ...
1 week ago
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