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MALPEDIA_Win_Play_Auto

autogenerated rule brought to you by yara-signator

MalwarePlayMalpedia 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: Play.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-play-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Play_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "fb8bcd82-2890-51e9-aef7-15cdb7334359"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.play"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.play_auto.yar#L1-L126"
		license_url = "N/A"
		logic_hash = "98ed430384a69d155a8a3b8add1f6db92e55c318ad1d4defbfbdd225c9837ee9"
		score = 75
		quality = 75
		tags = "FILE"
		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"

	strings:
		$sequence_0 = { 85c9 7ff1 eb1d 8d85b1feffff 03c1 50 }
		$sequence_1 = { 0f1005???????? 8945ac b854040000 6689856cffffff b8e0690000 0f114588 052496ffff }
		$sequence_2 = { 898518feffff b879180000 0f118594feffff 898534ffffff f30f7e05???????? a1???????? 660fd68500ffffff }
		$sequence_3 = { 02c0 02c2 888596feffff b9???????? e8???????? 8a85acfeffff }
		$sequence_4 = { 8a857cfcffff fec0 c745e43d000000 0245fd 8845ff 888521ffffff b83e000000 }
		$sequence_5 = { bbb410624c 8b0d???????? e8???????? 6aff ff75e8 ffd0 }
		$sequence_6 = { e8???????? 33d2 8b4df4 f7f6 8bc2 8945e4 }
		$sequence_7 = { 8955f8 894dfc e8???????? 8b0d???????? 33d2 }
		$sequence_8 = { 889591feffff 888dc9feffff 888d81feffff b920000000 c60000 }
		$sequence_9 = { e8???????? 2467 0fa1 ee d5d8 e9???????? 8c9f381b40b1 }

	condition:
		7 of them and filesize < 389120
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 85c9 7ff1 eb1d 8d85b1feffff 03c1 50 }
$sequence_1hex{ 0f1005???????? 8945ac b854040000 6689856cffffff b8e0690000 0f114588 052496ffff }
$sequence_2hex{ 898518feffff b879180000 0f118594feffff 898534ffffff f30f7e05???????? a1???????? 660fd68500ffffff }
$sequence_3hex{ 02c0 02c2 888596feffff b9???????? e8???????? 8a85acfeffff }
$sequence_4hex{ 8a857cfcffff fec0 c745e43d000000 0245fd 8845ff 888521ffffff b83e000000 }
$sequence_5hex{ bbb410624c 8b0d???????? e8???????? 6aff ff75e8 ffd0 }
$sequence_6hex{ e8???????? 33d2 8b4df4 f7f6 8bc2 8945e4 }
$sequence_7hex{ 8955f8 894dfc e8???????? 8b0d???????? 33d2 }
$sequence_8hex{ 889591feffff 888dc9feffff 888d81feffff b920000000 c60000 }
$sequence_9hex{ e8???????? 2467 0fa1 ee d5d8 e9???????? 8c9f381b40b1 }

Condition

7 of them and filesize < 389120

In plain words (Heuristic)

  • The file must be smaller than 389120 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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References

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)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: fb8bcd82-2890-51e9-aef7-15cdb7334359

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE