YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_103_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-103-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_103_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "64622a9f-f4c8-5d4f-9dcc-725cd2a73291"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_103"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_103_auto.yar#L1-L124"
= "N/A"
= "c4457a2e96653608dbfd3d34bd6343ff7e25cef91bacc5bf1546231e59399b05"
= 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 = { 8b442470 c744243008000000 c744243400000000 89442418 8b44246c 89442414 8d442430 }
$sequence_1 = { 8bbc2444010000 897c241c 8bbc2440010000 897c2418 }
$sequence_2 = { 8b742460 8b7c2464 896c2410 8b442440 }
$sequence_3 = { c744240401000000 c7042402000000 ff9424ec010000 83ec0c 8906 83f8ff }
$sequence_4 = { 85c0 75e2 8b3c24 89f2 }
$sequence_5 = { e8???????? 31c0 c78424ec05000063686370 c78424f005000020363530 c78424f405000030310a00 83c001 803c0300 }
$sequence_6 = { 897828 8bbc2458010000 89782c 8bbc245c010000 897830 8bbc2480010000 897834 }
$sequence_7 = { 396a04 75e2 8b4210 85c0 7514 8b07 8b5f3c }
$sequence_8 = { 891c24 89442404 e8???????? 83c420 89f8 5b 5e }
$sequence_9 = { 89742404 892c24 89c2 80ce02 81e300000004 0f45c2 8d54241c }
condition:
7 of them and filesize < 188416
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b442470 c744243008000000 c744243400000000 89442418 8b44246c 89442414 8d442430 } | |
| $sequence_1 | hex | { 8bbc2444010000 897c241c 8bbc2440010000 897c2418 } | |
| $sequence_2 | hex | { 8b742460 8b7c2464 896c2410 8b442440 } | |
| $sequence_3 | hex | { c744240401000000 c7042402000000 ff9424ec010000 83ec0c 8906 83f8ff } | |
| $sequence_4 | hex | { 85c0 75e2 8b3c24 89f2 } | |
| $sequence_5 | hex | { e8???????? 31c0 c78424ec05000063686370 c78424f005000020363530 c78424f405000030310a00 83c001 803c0300 } | |
| $sequence_6 | hex | { 897828 8bbc2458010000 89782c 8bbc245c010000 897830 8bbc2480010000 897834 } | |
| $sequence_7 | hex | { 396a04 75e2 8b4210 85c0 7514 8b07 8b5f3c } | |
| $sequence_8 | hex | { 891c24 89442404 e8???????? 83c420 89f8 5b 5e } | |
| $sequence_9 | hex | { 89742404 892c24 89c2 80ce02 81e300000004 0f45c2 8d54241c } |
Condition
7 of them and filesize < 188416In plain words (Heuristic)
- The file must be smaller than 188416 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 64622a9f-f4c8-5d4f-9dcc-725cd2a73291
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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