(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
passper-for-rar_setup-com_passper.exe 8 2026-02-18 3 days, 7 hours ago
ProtonVPN.Launcher.exe 6 2026-02-18 3 days, 7 hours ago
Matos (2).exe 4 2026-02-17 4 days, 7 hours ago
discord_game_sdk.dll 1 2026-02-13 1 week, 1 day ago
DTC22.dll 4 2026-02-11 1 week, 3 days ago
xDecoder 13.5.exe 2 2026-02-11 1 week, 3 days ago
DentalCADApp.exe 3 2026-02-10 1 week, 3 days ago
patcher - ORIGINAL.dll 5 2026-02-10 1 week, 3 days ago
2WLcc5qhdk.bat 1 2026-02-07 2 weeks ago
main.exe 11 2026-02-07 2 weeks ago
View All

Created

January 4, 2024

Last Revised

January 4, 2024