(YARA) YARA_XOR_Hunt

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rule XOR_hunt
{
  meta:
    author = "Thomas Roccia | @fr0gger_"
    description = "100DaysOfYara - An attempt to catch malicious/suspicious pe file using xor for some data"
    status = "experimental"

  strings:
    $s1 = "http://" xor
    $s2 = "https://" xor
    $s3 = "ftp://" xor
    $s4 = "This program cannot be run in DOS mode" xor
    $s5 = "Mozilla/5.0" xor
    $s6 = "cmd /c" xor
    $s7 = "-ep bypass" xor

  condition:
     uint16(0) == 0x5A4D and any of them
}

Associated Techniques

Technique Name Technique ID's Snippet(s) OS
XOR Operation U0701 E1027.m02

Matching Samples 10 most recent

Sample Name Matching Techniques First Seen Last Seen
FORScan.exe 5 2026-01-09 2 days, 20 hours ago
TradingBot.exe 4 2026-01-05 1 week ago
MANA X.exe 5 2026-01-03 1 week, 2 days ago
Agent Tesla.exe 3 2026-01-02 1 week, 2 days ago
CODM_2.3.1.exe 2 2025-12-26 2 weeks, 2 days ago
encrypter.exe 4 2025-12-25 2 weeks, 3 days ago
TS_4775.tmp 7 2025-12-23 2 weeks, 6 days ago
reqloghad.dll 7 2025-12-22 2 weeks, 6 days ago
bankroll.exe 1 2025-12-21 3 weeks ago
MBSetup (3).exe 6 2025-10-18 3 weeks, 2 days ago
View All

Created

January 4, 2024

Last Revised

January 4, 2024