YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_088_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-088-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_088_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "c8dd38f7-2f5b-53c1-8f19-dc2507fc97d7"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_088"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_088_auto.yar#L1-L130"
= "N/A"
= "cbea8f3b6cb908b2a9badd154b17f41d2ac4ca0bd30bca86b2ea205aae510ed2"
= 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 = { c705????????58024200 c705????????04000000 c705????????04000000 c605????????16 c705????????a0a34200 c705????????704c4000 c705????????18000000 }
$sequence_1 = { 31c0 85d2 7402 8b02 3b45d0 0f8450ffffff b9???????? }
$sequence_2 = { e8???????? 51 51 8b06 39c7 0f848b000000 85c0 }
$sequence_3 = { c705????????04000000 c605????????18 c705????????20ac4200 c705????????14254100 c605????????01 c705????????00000000 c705????????e0ab4200 }
$sequence_4 = { 8b45b0 e8???????? 84c0 7405 e8???????? 8b45c4 b903000000 }
$sequence_5 = { 66c705????????1903 c605????????01 c705????????10000000 c705????????40a74200 c705????????01e04100 }
$sequence_6 = { 85c0 0f85be020000 e9???????? 8b55c4 8d4ddc e8???????? }
$sequence_7 = { 8d4de0 890424 8b45c8 89542404 8b55cc 894c2408 e8???????? }
$sequence_8 = { 41 e8???????? ba???????? 89c7 e8???????? 8b5318 e8???????? }
$sequence_9 = { 7631 89f0 c7442410ffc99a3b c1f81f c744241400000000 c744240800000000 }
condition:
7 of them and filesize < 919552
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { c705????????58024200 c705????????04000000 c705????????04000000 c605????????16 c705????????a0a34200 c705????????704c4000 c705????????18000000 } | |
| $sequence_1 | hex | { 31c0 85d2 7402 8b02 3b45d0 0f8450ffffff b9???????? } | |
| $sequence_2 | hex | { e8???????? 51 51 8b06 39c7 0f848b000000 85c0 } | |
| $sequence_3 | hex | { c705????????04000000 c605????????18 c705????????20ac4200 c705????????14254100 c605????????01 c705????????00000000 c705????????e0ab4200 } | |
| $sequence_4 | hex | { 8b45b0 e8???????? 84c0 7405 e8???????? 8b45c4 b903000000 } | |
| $sequence_5 | hex | { 66c705????????1903 c605????????01 c705????????10000000 c705????????40a74200 c705????????01e04100 } | |
| $sequence_6 | hex | { 85c0 0f85be020000 e9???????? 8b55c4 8d4ddc e8???????? } | |
| $sequence_7 | hex | { 8d4de0 890424 8b45c8 89542404 8b55cc 894c2408 e8???????? } | |
| $sequence_8 | hex | { 41 e8???????? ba???????? 89c7 e8???????? 8b5318 e8???????? } | |
| $sequence_9 | hex | { 7631 89f0 c7442410ffc99a3b c1f81f c744241400000000 c744240800000000 } |
Condition
7 of them and filesize < 919552In plain words (Heuristic)
- The file must be smaller than 919552 (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: c8dd38f7-2f5b-53c1-8f19-dc2507fc97d7
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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