YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_003_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-003-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_003_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "b7985ab0-3646-5f6a-8383-ec33f2bb6a31"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_003"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_003_auto.yar#L1-L130"
= "N/A"
= "80fc90cd630c043568f4858238164c3dc1dbbe6f5a29cdca3098a6fb3ebf819f"
= 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 = { 5e 5b 8bc1 c20800 55 8bec }
$sequence_1 = { 53 a3???????? 8d4577 50 57 33db }
$sequence_2 = { 56 56 8d45d0 50 ff75b8 ff75e0 ff15???????? }
$sequence_3 = { 8b430c 50 50 6a0d 897b04 8b0f 57 }
$sequence_4 = { 56 e8???????? 83c40c 85c0 0f8525010000 83c60e }
$sequence_5 = { 85c0 75c7 85db 780b 8b45fc 894604 33c0 }
$sequence_6 = { 53 8dbdedfbffff c6002d e8???????? 53 53 8dbdf2fbffff }
$sequence_7 = { 68???????? ff75f8 ff15???????? ff75dc ff7508 56 ff75f8 }
$sequence_8 = { 47 84c9 75f8 be???????? 66a5 8b750c }
$sequence_9 = { 55 8bec 81ecb4000000 53 56 57 33f6 }
condition:
7 of them and filesize < 57344
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 5e 5b 8bc1 c20800 55 8bec } | |
| $sequence_1 | hex | { 53 a3???????? 8d4577 50 57 33db } | |
| $sequence_2 | hex | { 56 56 8d45d0 50 ff75b8 ff75e0 ff15???????? } | |
| $sequence_3 | hex | { 8b430c 50 50 6a0d 897b04 8b0f 57 } | |
| $sequence_4 | hex | { 56 e8???????? 83c40c 85c0 0f8525010000 83c60e } | |
| $sequence_5 | hex | { 85c0 75c7 85db 780b 8b45fc 894604 33c0 } | |
| $sequence_6 | hex | { 53 8dbdedfbffff c6002d e8???????? 53 53 8dbdf2fbffff } | |
| $sequence_7 | hex | { 68???????? ff75f8 ff15???????? ff75dc ff7508 56 ff75f8 } | |
| $sequence_8 | hex | { 47 84c9 75f8 be???????? 66a5 8b750c } | |
| $sequence_9 | hex | { 55 8bec 81ecb4000000 53 56 57 33f6 } |
Condition
7 of them and filesize < 57344In plain words (Heuristic)
- The file must be smaller than 57344 (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: b7985ab0-3646-5f6a-8383-ec33f2bb6a31
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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