YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_039_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-039-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_039_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "bbf18cc6-6b35-5e87-a620-32ae448bbe18"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_039"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_039_auto.yar#L1-L129"
= "N/A"
= "bb1e4b36ca1712ed43f9b61b59fe4c28a338b7504abce5c057a5310aa88db898"
= 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 = { 8b55e0 23ca 0bc1 8b4de4 0bc1 8945e8 8b45e0 }
$sequence_1 = { 0fafc1 8b4d34 0fafc1 8b4d28 81e9700a0000 33c1 894530 }
$sequence_2 = { 41 42 42 6685c0 75f1 5f 5e }
$sequence_3 = { 59 8945e4 ff75fc 56 ff15???????? c745d8de330000 c745f4dd0b0000 }
$sequence_4 = { 8b55e8 2bd1 8b4dec 23d1 8b4de4 0bc2 81f12d2a0000 }
$sequence_5 = { 0bc1 8945d8 8b45f0 8b4df4 3bc8 7c0c }
$sequence_6 = { c74598006b0000 c74594b7040000 c745902b270000 c74588777d0000 c7458c4d5c0000 }
$sequence_7 = { c745e8f9580000 c745dc3f1a0000 c745d8ee2c0000 c745e4092b0000 8b45e4 0345d8 0345dc }
$sequence_8 = { 8945a4 66c74475a66e00 c7459cf1300000 c7459c4d710000 8b459c 2d540f0000 }
$sequence_9 = { 3505150000 0bc1 8945d0 8b45e0 8b4de4 3bc8 }
condition:
7 of them and filesize < 262144
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b55e0 23ca 0bc1 8b4de4 0bc1 8945e8 8b45e0 } | |
| $sequence_1 | hex | { 0fafc1 8b4d34 0fafc1 8b4d28 81e9700a0000 33c1 894530 } | |
| $sequence_2 | hex | { 41 42 42 6685c0 75f1 5f 5e } | |
| $sequence_3 | hex | { 59 8945e4 ff75fc 56 ff15???????? c745d8de330000 c745f4dd0b0000 } | |
| $sequence_4 | hex | { 8b55e8 2bd1 8b4dec 23d1 8b4de4 0bc2 81f12d2a0000 } | |
| $sequence_5 | hex | { 0bc1 8945d8 8b45f0 8b4df4 3bc8 7c0c } | |
| $sequence_6 | hex | { c74598006b0000 c74594b7040000 c745902b270000 c74588777d0000 c7458c4d5c0000 } | |
| $sequence_7 | hex | { c745e8f9580000 c745dc3f1a0000 c745d8ee2c0000 c745e4092b0000 8b45e4 0345d8 0345dc } | |
| $sequence_8 | hex | { 8945a4 66c74475a66e00 c7459cf1300000 c7459c4d710000 8b459c 2d540f0000 } | |
| $sequence_9 | hex | { 3505150000 0bc1 8945d0 8b45e0 8b4de4 3bc8 } |
Condition
7 of them and filesize < 262144In plain words (Heuristic)
- The file must be smaller than 262144 (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: bbf18cc6-6b35-5e87-a620-32ae448bbe18
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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