YARA · Malpedia signator rules
MALPEDIA_Win_Scavenger_Auto
autogenerated rule brought to you by yara-signator
MalwareScavengerMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-05-04
- Modified
- 2026-05-18
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Scavenger.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-scavenger-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Scavenger_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "d7bdaeb0-7116-5c13-ae8f-87dbc7dfff1b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.scavenger"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.scavenger_auto.yar#L1-L118"
= "N/A"
= "91030dc6d1a65f35e56bdbbd23cb5dd4e96195557b8723c0aba6b4b022191693"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 4889842480000000 488d442421 4889842488000000 0fb6442422 88442423 488b442450 }
$sequence_1 = { 488b9424f8000000 488b8c24e8000000 e8???????? 90 }
$sequence_2 = { 488bc1 0fb600 85c0 7413 }
$sequence_3 = { 488b842450010000 488b4c2430 4803c8 488bc1 488b4c2438 0fb6542420 881401 }
$sequence_4 = { 488908 488b442450 488b4c2428 488908 486b44247820 }
$sequence_5 = { 4883ec28 488b442430 4889442408 488b442430 488378180f 760a }
$sequence_6 = { 488bc1 48898424b8000000 488bbc24b8000000 488bb42448010000 488b8c2450010000 f3a4 }
$sequence_7 = { 4889442450 488b442450 4c8bc0 488b542478 }
$sequence_8 = { 488b4008 482bc1 48c1f805 4889442440 488b442440 }
$sequence_9 = { 48c744243000000000 eb35 48817c242800100000 7211 488b4c2428 e8???????? 4889442430 }
condition:
7 of them and filesize < 2992128
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 4889842480000000 488d442421 4889842488000000 0fb6442422 88442423 488b442450 } | |
| $sequence_1 | hex | { 488b9424f8000000 488b8c24e8000000 e8???????? 90 } | |
| $sequence_2 | hex | { 488bc1 0fb600 85c0 7413 } | |
| $sequence_3 | hex | { 488b842450010000 488b4c2430 4803c8 488bc1 488b4c2438 0fb6542420 881401 } | |
| $sequence_4 | hex | { 488908 488b442450 488b4c2428 488908 486b44247820 } | |
| $sequence_5 | hex | { 4883ec28 488b442430 4889442408 488b442430 488378180f 760a } | |
| $sequence_6 | hex | { 488bc1 48898424b8000000 488bbc24b8000000 488bb42448010000 488b8c2450010000 f3a4 } | |
| $sequence_7 | hex | { 4889442450 488b442450 4c8bc0 488b542478 } | |
| $sequence_8 | hex | { 488b4008 482bc1 48c1f805 4889442440 488b442440 } | |
| $sequence_9 | hex | { 48c744243000000000 eb35 48817c242800100000 7211 488b4c2428 e8???????? 4889442430 } |
Condition
7 of them and filesize < 2992128In plain words (Heuristic)
- The file must be smaller than 2992128 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
Licence & attribution
Author: Felix Bilstein - yara-signator at cocacoding dot com
Source repository: Malpedia signator rules @ c901f97b7d
Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: d7bdaeb0-7116-5c13-ae8f-87dbc7dfff1b
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260422 |
| malpedia_hash | a182e35da64e6d71cb55f125c4d4225196523f14 |
| malpedia_version | 20260504 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04