YARA · Malpedia signator rules
MALPEDIA_Win_Skip20_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: Skip20.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-skip20-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Skip20_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "dec3df97-f40d-5bae-a6a2-881223bbed7d"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.skip20"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.skip20_auto.yar#L1-L128"
= "N/A"
= "0d60cab65a8ce67ba53815adb84ac11ab0ddeeeabb42f5358aceef35f5f8b7f3"
= 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 = { b808000000 668944bb24 66834b1820 ff4d18 0f8854fcffff 488b4510 480fbe08 }
$sequence_1 = { 488bdf 4c8bef 49c1fd05 4c8d350cff0400 }
$sequence_2 = { 807a2201 7406 807a2601 7520 440fb74220 4181f86c030000 7f40 }
$sequence_3 = { 488b4110 480fbf08 48894e08 4883471002 e9???????? 4c8d05f1a2ffff 83fa04 }
$sequence_4 = { 4183f902 7505 4183483804 f6c104 7405 4183483810 4983c202 }
$sequence_5 = { 0f8440010000 b900010000 e9???????? 8b842498000000 4585e4 754a 83f805 }
$sequence_6 = { 418bb482a08a0100 eb07 4c8d15b4b2ffff 8bd6 81e200004000 747e 41ff4c2418 }
$sequence_7 = { 56 57 4154 4155 4156 4883ec38 418bf1 }
$sequence_8 = { 0f8492000000 4889442450 488d153ef0ffff 488bc8 e8???????? }
$sequence_9 = { 488bcb e8???????? 4885c0 0f847affffff 8b15???????? 488d0c52 }
condition:
7 of them and filesize < 794624
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { b808000000 668944bb24 66834b1820 ff4d18 0f8854fcffff 488b4510 480fbe08 } | |
| $sequence_1 | hex | { 488bdf 4c8bef 49c1fd05 4c8d350cff0400 } | |
| $sequence_2 | hex | { 807a2201 7406 807a2601 7520 440fb74220 4181f86c030000 7f40 } | |
| $sequence_3 | hex | { 488b4110 480fbf08 48894e08 4883471002 e9???????? 4c8d05f1a2ffff 83fa04 } | |
| $sequence_4 | hex | { 4183f902 7505 4183483804 f6c104 7405 4183483810 4983c202 } | |
| $sequence_5 | hex | { 0f8440010000 b900010000 e9???????? 8b842498000000 4585e4 754a 83f805 } | |
| $sequence_6 | hex | { 418bb482a08a0100 eb07 4c8d15b4b2ffff 8bd6 81e200004000 747e 41ff4c2418 } | |
| $sequence_7 | hex | { 56 57 4154 4155 4156 4883ec38 418bf1 } | |
| $sequence_8 | hex | { 0f8492000000 4889442450 488d153ef0ffff 488bc8 e8???????? } | |
| $sequence_9 | hex | { 488bcb e8???????? 4885c0 0f847affffff 8b15???????? 488d0c52 } |
Condition
7 of them and filesize < 794624In plain words (Heuristic)
- The file must be smaller than 794624 (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: dec3df97-f40d-5bae-a6a2-881223bbed7d
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