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MALPEDIA_Win_Pay2Key_Auto

autogenerated rule brought to you by yara-signator

MalwarePay2KeyMalpedia 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: Pay2Key.

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

Summary generated from the rule's metadata and condition.

Rule source

win-pay2key-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Pay2Key_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "52ae617d-90c8-59a4-a326-6f6d8bf7a495"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.pay2key"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.pay2key_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "0979f527206b0fbcd39ef7939d91af8f5875a83da45102ef8c9ab6d75ed03216"
		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 = { 8d45f4 64a300000000 c745fc00000000 8b7110 85f6 7421 83cfff }
		$sequence_1 = { 8bf1 57 8b4604 85c0 7408 8b4004 }
		$sequence_2 = { c74608???????? 8b4dfc b001 5f 33cd 5e e8???????? }
		$sequence_3 = { ff75ec ff15???????? 8d4d90 e8???????? 8b4df4 64890d00000000 }
		$sequence_4 = { 8b01 eb02 8bc1 33d2 6aff 668910 8d85c4000000 }
		$sequence_5 = { 8b4d0c 8d45e4 50 e8???????? 8d4de4 c745fcffffffff }
		$sequence_6 = { f30f7e00 660fd606 8b4008 894608 8b44241c 57 }
		$sequence_7 = { eba9 807f0c00 740c 53 8bcf c6470c00 e8???????? }
		$sequence_8 = { e8???????? 84c0 7520 8b4d0c 8d45e4 50 e8???????? }
		$sequence_9 = { 8b32 8975f0 85db 7404 f0ff4304 8b7704 }

	condition:
		7 of them and filesize < 2252800
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8d45f4 64a300000000 c745fc00000000 8b7110 85f6 7421 83cfff }
$sequence_1hex{ 8bf1 57 8b4604 85c0 7408 8b4004 }
$sequence_2hex{ c74608???????? 8b4dfc b001 5f 33cd 5e e8???????? }
$sequence_3hex{ ff75ec ff15???????? 8d4d90 e8???????? 8b4df4 64890d00000000 }
$sequence_4hex{ 8b01 eb02 8bc1 33d2 6aff 668910 8d85c4000000 }
$sequence_5hex{ 8b4d0c 8d45e4 50 e8???????? 8d4de4 c745fcffffffff }
$sequence_6hex{ f30f7e00 660fd606 8b4008 894608 8b44241c 57 }
$sequence_7hex{ eba9 807f0c00 740c 53 8bcf c6470c00 e8???????? }
$sequence_8hex{ e8???????? 84c0 7520 8b4d0c 8d45e4 50 e8???????? }
$sequence_9hex{ 8b32 8975f0 85db 7404 f0ff4304 8b7704 }

Condition

7 of them and filesize < 2252800

In plain words (Heuristic)

  • The file must be smaller than 2252800 (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.

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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: 52ae617d-90c8-59a4-a326-6f6d8bf7a495

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