YARA · ditekSHen detection
DITEKSHEN_MALWARE_Win_Avoslocker
Hunt for AvosLocker ransomware
- Author
- ditekSHen
- Date
- 2020-11-06
- Modified
- 2024-11-01
- Score / Quality
- 75 / 75
What this rule detects
Hunt for AvosLocker ransomware
Associated malware family: Avos Locker.
Targets: Windows PE.
It defines 2 patterns (2 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
malware-win-avoslocker.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Avoslocker : FILE
{
meta:
= "Hunt for AvosLocker ransomware"
= "ditekSHen"
= "390e57b2-207e-5013-899a-0b04aa63a56f"
= "2020-11-06"
= "2024-11-01"
= "https://github.com/ditekshen/detection"
= "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L6748-L6757"
= "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
= "85601fdd13ddeb1fc0b8b98eb68e324046d60c1ae9467d083a75abebcb50e3a0"
= 75
= 75
= "FILE"
strings:
$s1 = "GET_YOUR_FILES_BACK.txt" ascii wide
$s2 = ".avos" fullword ascii wide
condition:
uint16( 0 ) == 0x5a4d and all of them
}
Strings (2 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s1 | text | "GET_YOUR_FILES_BACK.txt" | ascii wide |
| $s2 | text | ".avos" | fullword ascii wide |
Condition
uint16( 0 ) == 0x5a4d and all of themIn plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- All patterns in the rule must match.
Test this rule in your browser
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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
References
Licence & attribution
Author: ditekSHen
Source repository: ditekSHen detection @ e76c93dcde
Licence: BSD 2-Clause License (repository licence)
Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 390e57b2-207e-5013-899a-0b04aa63a56f
Tags:FILE
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