YARA · Malpedia signator rules
MALPEDIA_Win_Playwork_Auto
autogenerated rule brought to you by yara-signator
MalwarePlayworkMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- 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: Playwork.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-playwork-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Playwork_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "067a3320-4bd1-5237-927c-4703bf4eee96"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.playwork"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.playwork_auto.yar#L1-L128"
= "N/A"
= "6265b4953c4af6193b57b28e31e934be24e04932a330ad3d64b0042a0555d1d0"
= 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 = { 59 837c242000 744c 56 6a00 ff742428 e8???????? }
$sequence_1 = { 8d45bc 56 50 897510 ff7308 897508 }
$sequence_2 = { 53 ffd7 ff742418 e8???????? 8b2d???????? 59 837c241c00 }
$sequence_3 = { 8b45f8 6a2c ff7008 ffd7 }
$sequence_4 = { 57 ff75e8 ff15???????? 3d03010000 0f8442030000 8d8598f9ffff 50 }
$sequence_5 = { 57 8d450c 56 50 bf08010000 8d85f8feffff 57 }
$sequence_6 = { ffd6 03d8 81fb00a00000 0f8d09010000 8d85e8f7ffff 50 ff7508 }
$sequence_7 = { 0fb6c0 33149d5c703f00 3314855c6c3f00 3351f0 3317 83c704 8bc2 }
$sequence_8 = { 83e0f0 5f 7624 53 8b5c2410 56 }
$sequence_9 = { 8b1d???????? 56 ffd3 d1e0 50 56 }
condition:
7 of them and filesize < 360448
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 59 837c242000 744c 56 6a00 ff742428 e8???????? } | |
| $sequence_1 | hex | { 8d45bc 56 50 897510 ff7308 897508 } | |
| $sequence_2 | hex | { 53 ffd7 ff742418 e8???????? 8b2d???????? 59 837c241c00 } | |
| $sequence_3 | hex | { 8b45f8 6a2c ff7008 ffd7 } | |
| $sequence_4 | hex | { 57 ff75e8 ff15???????? 3d03010000 0f8442030000 8d8598f9ffff 50 } | |
| $sequence_5 | hex | { 57 8d450c 56 50 bf08010000 8d85f8feffff 57 } | |
| $sequence_6 | hex | { ffd6 03d8 81fb00a00000 0f8d09010000 8d85e8f7ffff 50 ff7508 } | |
| $sequence_7 | hex | { 0fb6c0 33149d5c703f00 3314855c6c3f00 3351f0 3317 83c704 8bc2 } | |
| $sequence_8 | hex | { 83e0f0 5f 7624 53 8b5c2410 56 } | |
| $sequence_9 | hex | { 8b1d???????? 56 ffd3 d1e0 50 56 } |
Condition
7 of them and filesize < 360448In plain words (Heuristic)
- The file must be smaller than 360448 (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: 067a3320-4bd1-5237-927c-4703bf4eee96
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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