YARA · Malpedia signator rules
MALPEDIA_Win_Mm_Core_Auto
autogenerated rule brought to you by yara-signator
MalwareMm CoreMalpedia 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: Mm Core.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-mm-core-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mm_Core_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "14416f23-323b-5443-a200-3c4467aca088"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.mm_core"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mm_core_auto.yar#L1-L124"
= "N/A"
= "b037dd787aad9408a50243733b94466535610a5636afeecd2a0457a1d2b7dcf6"
= 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 = { b9ff0f0000 8dbc24f8080000 e8???????? 83c410 8bcf 51 ffd3 }
$sequence_1 = { 8945e4 83f805 7d10 668b4c4310 66890c4524220110 }
$sequence_2 = { 6a03 57 57 50 51 }
$sequence_3 = { 0f84df030000 8b542420 8b44240c 8d4c2414 51 53 6a01 }
$sequence_4 = { 8b54241c 8d0c32 3b4c2418 761f c1e90a 41 }
$sequence_5 = { 6a00 50 e8???????? 83c40c 33c0 33c9 8d542408 }
$sequence_6 = { 6a00 68???????? 8d8c2430010000 51 }
$sequence_7 = { 33c0 eb1a 8bc8 83e01f c1f905 8b0c8d40400110 c1e006 }
$sequence_8 = { ffd6 895c241c 895c2418 8b442424 8b2d???????? 50 53 }
$sequence_9 = { 51 ffd3 8bf0 8b442414 85c0 }
condition:
7 of them and filesize < 319488
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { b9ff0f0000 8dbc24f8080000 e8???????? 83c410 8bcf 51 ffd3 } | |
| $sequence_1 | hex | { 8945e4 83f805 7d10 668b4c4310 66890c4524220110 } | |
| $sequence_2 | hex | { 6a03 57 57 50 51 } | |
| $sequence_3 | hex | { 0f84df030000 8b542420 8b44240c 8d4c2414 51 53 6a01 } | |
| $sequence_4 | hex | { 8b54241c 8d0c32 3b4c2418 761f c1e90a 41 } | |
| $sequence_5 | hex | { 6a00 50 e8???????? 83c40c 33c0 33c9 8d542408 } | |
| $sequence_6 | hex | { 6a00 68???????? 8d8c2430010000 51 } | |
| $sequence_7 | hex | { 33c0 eb1a 8bc8 83e01f c1f905 8b0c8d40400110 c1e006 } | |
| $sequence_8 | hex | { ffd6 895c241c 895c2418 8b442424 8b2d???????? 50 53 } | |
| $sequence_9 | hex | { 51 ffd3 8bf0 8b442414 85c0 } |
Condition
7 of them and filesize < 319488In plain words (Heuristic)
- The file must be smaller than 319488 (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: 14416f23-323b-5443-a200-3c4467aca088
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