YARA · Malpedia signator rules
MALPEDIA_Win_Mocton_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: Mocton.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-mocton-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mocton_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a65db501-bd68-5659-bb38-ad6b899cd84d"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.mocton"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mocton_auto.yar#L1-L133"
= "N/A"
= "2e67232f692cd88d3a04d3704851160466fb82bb47c43a0c1d77909b1956ba54"
= 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 = { 83f001 0f843f010000 8b4dcc 83c101 894dcc 8b55cc 8b45cc }
$sequence_1 = { 81c15366cc2a 33d2 3b8d24fbffff 0f95c2 81e23e6061db 81f2607c608b }
$sequence_2 = { 3d44ee8048 7f0c c785acfdffff01000000 eb0a c785acfdffff00000000 8b95acfdffff 81e20caea439 }
$sequence_3 = { 8955e8 8b45e8 83e801 8945e8 6a03 68???????? e8???????? }
$sequence_4 = { 0faf950cfbffff 0faf950cfbffff 89950cfbffff 8b850cfbffff 83c001 89850cfbffff 6a02 }
$sequence_5 = { 8b8d68feffff 81e9ef3da703 0b8dd4fdffff 7422 8b9568feffff 81f2fcd0115a 81f2bfe3969a }
$sequence_6 = { 8b9590fdffff c1e209 8b8590fdffff 2bc2 898590fdffff 6800040000 e8???????? }
$sequence_7 = { 85c9 7462 b8337b9ca9 2b85d8fcffff 33c9 3b85d8fcffff 0f9dc1 }
$sequence_8 = { 69c972b1ac43 898dacfeffff eb79 8b95acfeffff 83ea01 8995acfeffff 8b85acfeffff }
$sequence_9 = { 0f9dc1 81c9540e540f 7455 8b9590fdffff c1e209 8b8590fdffff c1e009 }
condition:
7 of them and filesize < 573440
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 83f001 0f843f010000 8b4dcc 83c101 894dcc 8b55cc 8b45cc } | |
| $sequence_1 | hex | { 81c15366cc2a 33d2 3b8d24fbffff 0f95c2 81e23e6061db 81f2607c608b } | |
| $sequence_2 | hex | { 3d44ee8048 7f0c c785acfdffff01000000 eb0a c785acfdffff00000000 8b95acfdffff 81e20caea439 } | |
| $sequence_3 | hex | { 8955e8 8b45e8 83e801 8945e8 6a03 68???????? e8???????? } | |
| $sequence_4 | hex | { 0faf950cfbffff 0faf950cfbffff 89950cfbffff 8b850cfbffff 83c001 89850cfbffff 6a02 } | |
| $sequence_5 | hex | { 8b8d68feffff 81e9ef3da703 0b8dd4fdffff 7422 8b9568feffff 81f2fcd0115a 81f2bfe3969a } | |
| $sequence_6 | hex | { 8b9590fdffff c1e209 8b8590fdffff 2bc2 898590fdffff 6800040000 e8???????? } | |
| $sequence_7 | hex | { 85c9 7462 b8337b9ca9 2b85d8fcffff 33c9 3b85d8fcffff 0f9dc1 } | |
| $sequence_8 | hex | { 69c972b1ac43 898dacfeffff eb79 8b95acfeffff 83ea01 8995acfeffff 8b85acfeffff } | |
| $sequence_9 | hex | { 0f9dc1 81c9540e540f 7455 8b9590fdffff c1e209 8b8590fdffff c1e009 } |
Condition
7 of them and filesize < 573440In plain words (Heuristic)
- The file must be smaller than 573440 (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: a65db501-bd68-5659-bb38-ad6b899cd84d
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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