(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
fpCSEvtSvc.scam 5 2025-12-01 1 day, 11 hours ago
3KTrangXinhTQ.exe 2 2025-12-01 1 day, 15 hours ago
fuck.exe 1 2025-11-30 2 days, 2 hours ago
Launcher_dump.exe 7 2025-11-30 2 days, 13 hours ago
Launcher.exe 5 2025-11-30 2 days, 13 hours ago
ConsoleApplication2.exe 5 2025-11-27 4 days, 23 hours ago
Lazy-Loot.exe 5 2025-11-27 4 days, 23 hours ago
rlm1611_http.dll 6 2025-11-22 1 week, 3 days ago
Sheriffs_Office.exe 4 2025-11-22 1 week, 3 days ago
ekrn.exe 5 2025-11-19 1 week, 5 days ago
View All

Created

January 4, 2024

Last Revised

January 4, 2024