(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
mxie.exe 6 2025-11-11 14 hours, 49 minutes ago
c09065e575639c63ee5e74b4def1...a5454d3a98302478f7840338.exe 8 2025-11-05 1 week ago
ACTk.Runtime.dll 7 2025-11-03 1 week, 2 days ago
steamcmd.exe 5 2025-11-02 1 week, 2 days ago
frostygoop.exe 7 2025-10-24 2 weeks, 4 days ago
Lightshot.exe 10 2025-10-24 2 weeks, 4 days ago
download.exe 5 2025-10-23 2 weeks, 5 days ago
Scalper_Telegram@Val1312q.dll 8 2025-10-21 3 weeks, 1 day ago
NinzaCoUnlocker.dll 1 2025-10-21 3 weeks, 1 day ago
cat.exe 3 2025-10-20 3 weeks, 1 day ago
View All

Created

January 4, 2024

Last Revised

January 4, 2024