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MALPEDIA_Win_Apocalypse_Ransom_Auto

autogenerated rule brought to you by yara-signator

MalwareApocalypse RansomMalpedia 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: Apocalypse Ransom.

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

Summary generated from the rule's metadata and condition.

Rule source

win-apocalypse-ransom-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Apocalypse_Ransom_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "ad891b9e-e1cd-5ed1-93ef-39d387aa690e"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.apocalypse_ransom"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.apocalypse_ransom_auto.yar#L1-L124"
		license_url = "N/A"
		logic_hash = "39a62a0acb7148bc3f258940de1185618dbea7a7beb1240cf85415684f0c9465"
		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 = { 56 ff15???????? 56 ff15???????? 8bc3 e8???????? }
		$sequence_1 = { 6a03 6800000040 52 ffd6 8bf0 85f6 }
		$sequence_2 = { 6a00 6a01 6800000080 8d4c2440 51 }
		$sequence_3 = { 83c408 5e 8be5 5d c3 ff25???????? }
		$sequence_4 = { 33c9 83f803 0f94c1 56 8d94246c020000 }
		$sequence_5 = { 743b 8b94242c020000 6a00 6800000002 6a03 6a00 6a03 }
		$sequence_6 = { 57 68ff000000 8d44242c 50 68???????? ff15???????? 8b35???????? }
		$sequence_7 = { 68???????? 6a00 ffd7 68???????? 50 ff15???????? }
		$sequence_8 = { 752c ff15???????? 68???????? 8d84240c040000 50 ff15???????? 85c0 }
		$sequence_9 = { 6a6d 50 c744243006000000 c74424346d000000 c7442438e03b4000 }

	condition:
		7 of them and filesize < 40960
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 56 ff15???????? 56 ff15???????? 8bc3 e8???????? }
$sequence_1hex{ 6a03 6800000040 52 ffd6 8bf0 85f6 }
$sequence_2hex{ 6a00 6a01 6800000080 8d4c2440 51 }
$sequence_3hex{ 83c408 5e 8be5 5d c3 ff25???????? }
$sequence_4hex{ 33c9 83f803 0f94c1 56 8d94246c020000 }
$sequence_5hex{ 743b 8b94242c020000 6a00 6800000002 6a03 6a00 6a03 }
$sequence_6hex{ 57 68ff000000 8d44242c 50 68???????? ff15???????? 8b35???????? }
$sequence_7hex{ 68???????? 6a00 ffd7 68???????? 50 ff15???????? }
$sequence_8hex{ 752c ff15???????? 68???????? 8d84240c040000 50 ff15???????? 85c0 }
$sequence_9hex{ 6a6d 50 c744243006000000 c74424346d000000 c7442438e03b4000 }

Condition

7 of them and filesize < 40960

In plain words (Heuristic)

  • The file must be smaller than 40960 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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Open in editor

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: ad891b9e-e1cd-5ed1-93ef-39d387aa690e

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