YARA · Malpedia signator rules
MALPEDIA_Win_Polpo_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: Polpo.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-polpo-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Polpo_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "43654109-340c-5f1f-a65b-5de0d075aa78"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.polpo"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.polpo_auto.yar#L1-L126"
= "N/A"
= "de9ef3976e841593875b59293f8ebed4eebad224ab175b46ffa6434e01acd02c"
= 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 = { 8bf2 c1e902 f3a5 8bc8 83e103 f3a4 83bd20f7ffff50 }
$sequence_1 = { 56 50 52 e8???????? 8b870c020000 56 }
$sequence_2 = { e8???????? 83c410 8b9528f7ffff 8916 }
$sequence_3 = { e8???????? 8bf0 b867666666 f7ee 8b4d08 d1fa 8bc2 }
$sequence_4 = { 83c410 83feff 0f844e010000 6800040000 }
$sequence_5 = { 68???????? e8???????? 8bf0 83c41c 83feff 0f8413ffffff 6a00 }
$sequence_6 = { 8d4c3004 51 8dbe00040000 57 e8???????? 6800040000 }
$sequence_7 = { e8???????? 83c40c 85c0 7561 6800010000 8d85fcfeffff 6a00 }
$sequence_8 = { 8945cd 8945d1 8945d5 668945d9 8845db c745dc504f5354 c745e0202f7061 }
$sequence_9 = { c645dc00 e8???????? 83c40c 85f6 0f84af000000 56 57 }
condition:
7 of them and filesize < 250880
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8bf2 c1e902 f3a5 8bc8 83e103 f3a4 83bd20f7ffff50 } | |
| $sequence_1 | hex | { 56 50 52 e8???????? 8b870c020000 56 } | |
| $sequence_2 | hex | { e8???????? 83c410 8b9528f7ffff 8916 } | |
| $sequence_3 | hex | { e8???????? 8bf0 b867666666 f7ee 8b4d08 d1fa 8bc2 } | |
| $sequence_4 | hex | { 83c410 83feff 0f844e010000 6800040000 } | |
| $sequence_5 | hex | { 68???????? e8???????? 8bf0 83c41c 83feff 0f8413ffffff 6a00 } | |
| $sequence_6 | hex | { 8d4c3004 51 8dbe00040000 57 e8???????? 6800040000 } | |
| $sequence_7 | hex | { e8???????? 83c40c 85c0 7561 6800010000 8d85fcfeffff 6a00 } | |
| $sequence_8 | hex | { 8945cd 8945d1 8945d5 668945d9 8845db c745dc504f5354 c745e0202f7061 } | |
| $sequence_9 | hex | { c645dc00 e8???????? 83c40c 85f6 0f84af000000 56 57 } |
Condition
7 of them and filesize < 250880In plain words (Heuristic)
- The file must be smaller than 250880 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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: 43654109-340c-5f1f-a65b-5de0d075aa78
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
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04