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MALPEDIA_Win_Deathransom_Auto

autogenerated rule brought to you by yara-signator

MalwareDeathransomMalpedia 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: Deathransom.

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

Summary generated from the rule's metadata and condition.

Rule source

win-deathransom-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Deathransom_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "64427647-6fce-5755-8829-e1146578a5e4"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.deathransom"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.deathransom_auto.yar#L1-L128"
		license_url = "N/A"
		logic_hash = "952a3b2641269e5f046a7ee2ac94d4a65c748fea8db42d338e3254f72a56328f"
		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 = { 8b55d8 33c3 03c1 81c216c1a419 03d0 8bcf 0155ec }
		$sequence_1 = { 8d049d00000000 50 6a08 ffd1 50 }
		$sequence_2 = { 5f 33c0 5e c3 8b4908 f7d6 }
		$sequence_3 = { 83c42c 8b4df4 57 53 e8???????? 8b55e4 }
		$sequence_4 = { 5e 5b 8be5 5d c3 8b35???????? 6a04 }
		$sequence_5 = { 235ddc 0bd8 895de0 014de0 8b4dc4 8bd1 }
		$sequence_6 = { 33c8 8b7de4 03ca 8b5df4 8b55dc 8bc6 }
		$sequence_7 = { c1e80a 33d0 8b5da0 0355bc 8bcb c1c10e 8bc3 }
		$sequence_8 = { 8bc3 c1e803 33f8 8b5de0 03fa 8b55ec 037db4 }
		$sequence_9 = { 3b55fc 8b75f0 1bc0 c1eb10 f7d8 03c1 8b4df8 }

	condition:
		7 of them and filesize < 133120
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8b55d8 33c3 03c1 81c216c1a419 03d0 8bcf 0155ec }
$sequence_1hex{ 8d049d00000000 50 6a08 ffd1 50 }
$sequence_2hex{ 5f 33c0 5e c3 8b4908 f7d6 }
$sequence_3hex{ 83c42c 8b4df4 57 53 e8???????? 8b55e4 }
$sequence_4hex{ 5e 5b 8be5 5d c3 8b35???????? 6a04 }
$sequence_5hex{ 235ddc 0bd8 895de0 014de0 8b4dc4 8bd1 }
$sequence_6hex{ 33c8 8b7de4 03ca 8b5df4 8b55dc 8bc6 }
$sequence_7hex{ c1e80a 33d0 8b5da0 0355bc 8bcb c1c10e 8bc3 }
$sequence_8hex{ 8bc3 c1e803 33f8 8b5de0 03fa 8b55ec 037db4 }
$sequence_9hex{ 3b55fc 8b75f0 1bc0 c1eb10 f7d8 03c1 8b4df8 }

Condition

7 of them and filesize < 133120

In plain words (Heuristic)

  • The file must be smaller than 133120 (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: 64427647-6fce-5755-8829-e1146578a5e4

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