(YARA) YARA_XOR_Hunt
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 |
|---|---|---|---|
| BBHloader.exe | 6 | 2026-03-10 | 3 days, 23 hours ago |
| _vmp_d5b8_cache.tmp | 1 | 2026-03-08 | 5 days, 15 hours ago |
| greeze_dupe.exe | 1 | 2026-03-08 | 5 days, 21 hours ago |
| library2.dll | 6 | 2026-03-06 | 1 week ago |
| library.dll | 8 | 2026-03-06 | 1 week ago |
| DelphinDesktop.dll | 8 | 2026-03-05 | 1 week, 2 days ago |
| 548964a6ea3d573cfae71aa5e2d0...0fc323c6432e96d2ad55b80d.exe | 7 | 2026-03-04 | 1 week, 2 days ago |
| test_dll_packed.dll | 4 | 2026-03-03 | 1 week, 3 days ago |
| AION.exe | 5 | 2026-03-03 | 1 week, 3 days ago |
| um.exe | 7 | 2026-03-02 | 1 week, 4 days ago |
Created
January 4, 2024
Last Revised
January 4, 2024