YARA · Malpedia signator rules
MALPEDIA_Win_Winos_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
Associated malware family: Winos.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-winos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Winos_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "43b83a96-8dab-5aba-ab26-050a40e2448c"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.winos"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.winos_auto.yar#L1-L124"
= "N/A"
= "a68822c4e7fe8a236d5e547c69555e9f67fb9650712fbb3b3f2f59da98143c5a"
= 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 = { e8???????? 83c40c 68???????? 8d5702 68ff000000 52 c60701 }
$sequence_1 = { 6683f881 7412 6683f801 740c c705????????00000000 eb1e c705????????01000000 }
$sequence_2 = { 895008 8b8b2c040000 89480c 8b9334040000 895018 89442424 }
$sequence_3 = { 83c40c 837b0800 7510 8b4b04 }
$sequence_4 = { 8945f8 53 8b5d08 56 33f6 57 8975a0 }
$sequence_5 = { 50 ff15???????? 0fb74c2438 0fb7542436 0fb7442434 51 0fb74c2436 }
$sequence_6 = { ff15???????? 8b35???????? 50 ffd6 50 8945b8 ff15???????? }
$sequence_7 = { 8d8dfaf7ffff 894624 51 668985f8f7ffff }
$sequence_8 = { 6a00 68???????? 68???????? c705????????3c000000 8b08 8b5128 6a14 }
$sequence_9 = { 52 6a00 50 c745dc00000000 }
condition:
7 of them and filesize < 457728
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? 83c40c 68???????? 8d5702 68ff000000 52 c60701 } | |
| $sequence_1 | hex | { 6683f881 7412 6683f801 740c c705????????00000000 eb1e c705????????01000000 } | |
| $sequence_2 | hex | { 895008 8b8b2c040000 89480c 8b9334040000 895018 89442424 } | |
| $sequence_3 | hex | { 83c40c 837b0800 7510 8b4b04 } | |
| $sequence_4 | hex | { 8945f8 53 8b5d08 56 33f6 57 8975a0 } | |
| $sequence_5 | hex | { 50 ff15???????? 0fb74c2438 0fb7542436 0fb7442434 51 0fb74c2436 } | |
| $sequence_6 | hex | { ff15???????? 8b35???????? 50 ffd6 50 8945b8 ff15???????? } | |
| $sequence_7 | hex | { 8d8dfaf7ffff 894624 51 668985f8f7ffff } | |
| $sequence_8 | hex | { 6a00 68???????? 68???????? c705????????3c000000 8b08 8b5128 6a14 } | |
| $sequence_9 | hex | { 52 6a00 50 c745dc00000000 } |
Condition
7 of them and filesize < 457728In plain words (Heuristic)
- The file must be smaller than 457728 (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: 43b83a96-8dab-5aba-ab26-050a40e2448c
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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