YARA · Malpedia signator rules
MALPEDIA_Win_Cobint_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 / 73
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Cobint.
It defines 24 patterns (0 text, 24 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-cobint-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Cobint_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "176f9656-ccf8-5373-bb9f-f7003f6b4f18"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.cobint"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.cobint_auto.yar#L1-L247"
= "N/A"
= "13d0a835e19ad70ae9fdaf4f7411cafe43dffff4c68466ea694ae99d6e4c9c12"
= 75
= 73
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 8b4508 8945e8 85c0 7470 2175fc }
$sequence_1 = { c3 55 8bec 8a4d0c 56 8b7508 880e }
$sequence_2 = { 55 8bec 836d0c01 7507 6a00 }
$sequence_3 = { 8b7d10 57 e8???????? 57 ff750c }
$sequence_4 = { 8b0d???????? a1???????? 893cc1 a1???????? 8b0d???????? 8974c804 }
$sequence_5 = { c745f404000000 50 8d4508 50 }
$sequence_6 = { 56 ff15???????? 85c0 7412 814d0880330000 8d4508 }
$sequence_7 = { 8b7d08 6a40 6800300000 ff7708 }
$sequence_8 = { 8a45ec 8802 eb0b 8b4d08 034df0 8a55ed 8811 }
$sequence_9 = { e10b 96 7c90 90 }
$sequence_10 = { 7505 b301 885dff 84db 0f8477fdffff 5f 5e }
$sequence_11 = { c3 31b7807c30ae 807c909090 90 bdfd807c90 90 90 }
$sequence_12 = { 90 bffc807c28 1a807c170e81 7cd7 9b 807c909090 90 }
$sequence_13 = { 8b7228 8bf8 663906 742c 33db 8a06 }
$sequence_14 = { 740d 8b5508 0355f0 8a45ec 8802 eb0b }
$sequence_15 = { 885dff 8d45d0 c745d090010000 50 8d8524feffff 50 }
$sequence_16 = { 90 90 749b 807ce19a80 7c90 90 90 }
$sequence_17 = { 51 51 51 8d8524feffff }
$sequence_18 = { 8b12 85d2 75c4 eb03 8b4210 ba2d5f6af8 8945e0 }
$sequence_19 = { 8b75e4 ff75d8 ffd6 8a5dff eb03 8b75e4 ff75d4 }
$sequence_20 = { e8???????? 58 83c005 c3 31b7807c30ae 807c909090 }
$sequence_21 = { 8bc8 e8???????? 8d9524feffff 8945cc }
$sequence_22 = { 8bdf 890496 8bf9 8b45e8 42 c1e802 3bd0 }
$sequence_23 = { bdfd807c90 90 90 90 90 90 90 }
condition:
7 of them and filesize < 65536
}
Strings (24 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b4508 8945e8 85c0 7470 2175fc } | |
| $sequence_1 | hex | { c3 55 8bec 8a4d0c 56 8b7508 880e } | |
| $sequence_2 | hex | { 55 8bec 836d0c01 7507 6a00 } | |
| $sequence_3 | hex | { 8b7d10 57 e8???????? 57 ff750c } | |
| $sequence_4 | hex | { 8b0d???????? a1???????? 893cc1 a1???????? 8b0d???????? 8974c804 } | |
| $sequence_5 | hex | { c745f404000000 50 8d4508 50 } | |
| $sequence_6 | hex | { 56 ff15???????? 85c0 7412 814d0880330000 8d4508 } | |
| $sequence_7 | hex | { 8b7d08 6a40 6800300000 ff7708 } | |
| $sequence_8 | hex | { 8a45ec 8802 eb0b 8b4d08 034df0 8a55ed 8811 } | |
| $sequence_9 | hex | { e10b 96 7c90 90 } | |
| $sequence_10 | hex | { 7505 b301 885dff 84db 0f8477fdffff 5f 5e } | |
| $sequence_11 | hex | { c3 31b7807c30ae 807c909090 90 bdfd807c90 90 90 } | |
| $sequence_12 | hex | { 90 bffc807c28 1a807c170e81 7cd7 9b 807c909090 90 } | |
| $sequence_13 | hex | { 8b7228 8bf8 663906 742c 33db 8a06 } | |
| $sequence_14 | hex | { 740d 8b5508 0355f0 8a45ec 8802 eb0b } | |
| $sequence_15 | hex | { 885dff 8d45d0 c745d090010000 50 8d8524feffff 50 } | |
| $sequence_16 | hex | { 90 90 749b 807ce19a80 7c90 90 90 } | |
| $sequence_17 | hex | { 51 51 51 8d8524feffff } | |
| $sequence_18 | hex | { 8b12 85d2 75c4 eb03 8b4210 ba2d5f6af8 8945e0 } | |
| $sequence_19 | hex | { 8b75e4 ff75d8 ffd6 8a5dff eb03 8b75e4 ff75d4 } | |
| $sequence_20 | hex | { e8???????? 58 83c005 c3 31b7807c30ae 807c909090 } | |
| $sequence_21 | hex | { 8bc8 e8???????? 8d9524feffff 8945cc } | |
| $sequence_22 | hex | { 8bdf 890496 8bf9 8b45e8 42 c1e802 3bd0 } | |
| $sequence_23 | hex | { bdfd807c90 90 90 90 90 90 90 } |
Condition
7 of them and filesize < 65536In plain words (Heuristic)
- The file must be smaller than 65536 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
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: 176f9656-ccf8-5373-bb9f-f7003f6b4f18
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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