YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_091_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
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-unidentified-091-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_091_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "cf09f652-e969-58ee-9b4f-8afb50f512ed"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_091"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_091_auto.yar#L1-L134"
= "N/A"
= "a228d061a0a5a0cb3920e1fda0eaddb57b86d5516f29931565c9af29e9a8ece4"
= 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 = { 89552c 44894550 4c8d14c1 44894530 4803c2 4c895520 c7455402000000 }
$sequence_1 = { 8b542420 443bd3 0f8481000000 443bd2 0f82df000000 453bd3 0f83d6000000 }
$sequence_2 = { ff15???????? 48898378040000 4883f8ff 742c c7837004000001000000 4885ff 744e }
$sequence_3 = { 7593 b841000000 b9b6000000 ba6d000000 894c2420 4c8d0d366d1200 448bc0 }
$sequence_4 = { e9???????? c6456807 816568fffeffff 0f57c0 f30f7f4570 4c89bd80000000 b910000000 }
$sequence_5 = { 7511 c7442428c60c0000 8d5050 448d4810 eb69 41b901000000 4c8bc7 }
$sequence_6 = { c744242801000000 488d0d028a1400 4c8bc3 89442420 e8???????? 4883c430 5b }
$sequence_7 = { 8945a7 8945f3 8bc7 3345ab c1c00c 4403f0 418bd6 }
$sequence_8 = { c3 ba50000000 c7442428d1010000 488d0568001300 41b8d5010000 488bcb 4889442420 }
$sequence_9 = { 7415 41b8240b0000 488d1558971100 488bcb e8???????? 488b5c2430 b801000000 }
condition:
7 of them and filesize < 5777408
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 89552c 44894550 4c8d14c1 44894530 4803c2 4c895520 c7455402000000 } | |
| $sequence_1 | hex | { 8b542420 443bd3 0f8481000000 443bd2 0f82df000000 453bd3 0f83d6000000 } | |
| $sequence_2 | hex | { ff15???????? 48898378040000 4883f8ff 742c c7837004000001000000 4885ff 744e } | |
| $sequence_3 | hex | { 7593 b841000000 b9b6000000 ba6d000000 894c2420 4c8d0d366d1200 448bc0 } | |
| $sequence_4 | hex | { e9???????? c6456807 816568fffeffff 0f57c0 f30f7f4570 4c89bd80000000 b910000000 } | |
| $sequence_5 | hex | { 7511 c7442428c60c0000 8d5050 448d4810 eb69 41b901000000 4c8bc7 } | |
| $sequence_6 | hex | { c744242801000000 488d0d028a1400 4c8bc3 89442420 e8???????? 4883c430 5b } | |
| $sequence_7 | hex | { 8945a7 8945f3 8bc7 3345ab c1c00c 4403f0 418bd6 } | |
| $sequence_8 | hex | { c3 ba50000000 c7442428d1010000 488d0568001300 41b8d5010000 488bcb 4889442420 } | |
| $sequence_9 | hex | { 7415 41b8240b0000 488d1558971100 488bcb e8???????? 488b5c2430 b801000000 } |
Condition
7 of them and filesize < 5777408In plain words (Heuristic)
- The file must be smaller than 5777408 (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: cf09f652-e969-58ee-9b4f-8afb50f512ed
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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