YARA · Malpedia signator rules
MALPEDIA_Win_Mmon_Auto
autogenerated rule brought to you by yara-signator
- 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: Mmon.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-mmon-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mmon_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "382929e5-1aeb-598e-80b4-b2e35ebdd0a4"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.mmon"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mmon_auto.yar#L1-L113"
= "N/A"
= "bd55b6e13ac8428dd80e1dee9e31e812c7feeb4888fce48507e76b5a5abcc4d1"
= 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 = { 7524 a1???????? a3???????? a1???????? c705????????c8234100 }
$sequence_1 = { 8945fc 8bcf 8d45d4 e8???????? }
$sequence_2 = { 89480c 8b45d0 8975e0 3975e4 7303 }
$sequence_3 = { 68???????? 56 897dfc 89bd4cffffff 898d50ffffff }
$sequence_4 = { 52 e8???????? 83c404 bb08000000 837de410 }
$sequence_5 = { 40 0080af4000a4 af 40 }
$sequence_6 = { c1f905 83e01f c1e006 03048d606a4200 eb05 b8???????? f6402480 }
$sequence_7 = { 897c2424 c74424141ce34100 e8???????? f6c102 }
$sequence_8 = { 83c404 c645fc00 837dc810 c745e40f000000 c745e000000000 c645d000 }
$sequence_9 = { 8d541246 51 2bc2 8d4db4 }
condition:
7 of them and filesize < 356352
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 7524 a1???????? a3???????? a1???????? c705????????c8234100 } | |
| $sequence_1 | hex | { 8945fc 8bcf 8d45d4 e8???????? } | |
| $sequence_2 | hex | { 89480c 8b45d0 8975e0 3975e4 7303 } | |
| $sequence_3 | hex | { 68???????? 56 897dfc 89bd4cffffff 898d50ffffff } | |
| $sequence_4 | hex | { 52 e8???????? 83c404 bb08000000 837de410 } | |
| $sequence_5 | hex | { 40 0080af4000a4 af 40 } | |
| $sequence_6 | hex | { c1f905 83e01f c1e006 03048d606a4200 eb05 b8???????? f6402480 } | |
| $sequence_7 | hex | { 897c2424 c74424141ce34100 e8???????? f6c102 } | |
| $sequence_8 | hex | { 83c404 c645fc00 837dc810 c745e40f000000 c745e000000000 c645d000 } | |
| $sequence_9 | hex | { 8d541246 51 2bc2 8d4db4 } |
Condition
7 of them and filesize < 356352In plain words (Heuristic)
- The file must be smaller than 356352 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 382929e5-1aeb-598e-80b4-b2e35ebdd0a4
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
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