YARA · Malpedia signator rules
MALPEDIA_Win_Murkytop_Auto
autogenerated rule brought to you by yara-signator
MalwareMurkytopMalpedia 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: Murkytop.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-murkytop-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Murkytop_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "1a665249-254d-5c04-9dec-672dd61ba6b1"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.murkytop"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.murkytop_auto.yar#L1-L127"
= "N/A"
= "401cb7ebf79c087a4975a12c90fb689e3e0df0a36ec46e807d1b933b33fbd494"
= 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 = { 3b0cc508714100 740a 40 83f816 72ee 33c0 5d }
$sequence_1 = { 897df4 ff15???????? 85c0 0f84d0000000 33c0 8945cc }
$sequence_2 = { 51 6a00 6a03 52 56 57 ffd3 }
$sequence_3 = { 50 ff15???????? eb3d 8b7df8 33db 3975fc }
$sequence_4 = { ebeb 8bff 55 8bec 83ec4c 56 8d45b4 }
$sequence_5 = { 8945c4 33c9 66894db0 8945b2 }
$sequence_6 = { 56 8b35???????? 3bf0 7412 6a00 50 56 }
$sequence_7 = { 8d0440 8d04851c000000 3901 7312 6a7a 8901 }
$sequence_8 = { 68???????? 50 e8???????? 83c408 85c0 7513 68???????? }
$sequence_9 = { c745d801000000 eb10 8b5de0 8b75dc 8b7de4 c745d800000000 }
condition:
7 of them and filesize < 294912
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 3b0cc508714100 740a 40 83f816 72ee 33c0 5d } | |
| $sequence_1 | hex | { 897df4 ff15???????? 85c0 0f84d0000000 33c0 8945cc } | |
| $sequence_2 | hex | { 51 6a00 6a03 52 56 57 ffd3 } | |
| $sequence_3 | hex | { 50 ff15???????? eb3d 8b7df8 33db 3975fc } | |
| $sequence_4 | hex | { ebeb 8bff 55 8bec 83ec4c 56 8d45b4 } | |
| $sequence_5 | hex | { 8945c4 33c9 66894db0 8945b2 } | |
| $sequence_6 | hex | { 56 8b35???????? 3bf0 7412 6a00 50 56 } | |
| $sequence_7 | hex | { 8d0440 8d04851c000000 3901 7312 6a7a 8901 } | |
| $sequence_8 | hex | { 68???????? 50 e8???????? 83c408 85c0 7513 68???????? } | |
| $sequence_9 | hex | { c745d801000000 eb10 8b5de0 8b75dc 8b7de4 c745d800000000 } |
Condition
7 of them and filesize < 294912In plain words (Heuristic)
- The file must be smaller than 294912 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
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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: 1a665249-254d-5c04-9dec-672dd61ba6b1
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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