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MALPEDIA_Win_Clop_Auto

autogenerated rule brought to you by yara-signator

MalwareClopMalpedia 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: Clop.

It defines 19 patterns (0 text, 19 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-clop-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Clop_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "8e6566b7-d723-5b0d-89e0-5f2bf908dee7"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.clop"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.clop_auto.yar#L1-L182"
		license_url = "N/A"
		logic_hash = "67b2ff23adffc2b6265bd7b4e4e96c9d6922727e827fa3ba5d417b1f80738cfd"
		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 = { 6a04 6800300000 6887000000 6a00 }
		$sequence_1 = { 83c40c 6860070000 6a40 ff15???????? }
		$sequence_2 = { 8bf8 ff15???????? 8bf0 56 6a40 }
		$sequence_3 = { 6a00 ff15???????? 68???????? 8bd8 }
		$sequence_4 = { 50 ff15???????? 56 53 8bf8 }
		$sequence_5 = { 8bf0 56 53 ff15???????? 50 ff15???????? }
		$sequence_6 = { 833d????????00 0f842e0c0000 83ec08 0fae5c2404 8b442404 25807f0000 3d801f0000 }
		$sequence_7 = { 50 ff15???????? 83c40c 6860070000 }
		$sequence_8 = { 8b1d???????? 8d85d4f7ffff 68???????? 50 ffd3 8d85d4f7ffff 50 }
		$sequence_9 = { ffd0 c3 8bff 55 8bec 83ec1c 8d4de4 }
		$sequence_10 = { 0f85aa010000 68???????? 8d442450 50 }
		$sequence_11 = { ff15???????? 68???????? 8d85dcf7ffff 50 }
		$sequence_12 = { 68???????? 68???????? e8???????? 83c424 6aff }
		$sequence_13 = { 6888130000 ffd7 6a00 6a00 }
		$sequence_14 = { 8d85bcefffff 50 ff15???????? 68???????? }
		$sequence_15 = { 6a00 e8???????? 83c408 6aff ff15???????? }
		$sequence_16 = { 83c424 53 50 ffd6 }
		$sequence_17 = { 83c40c 33f6 85ff 7428 }
		$sequence_18 = { 6aff ffd7 8b4dfc 33c0 }

	condition:
		7 of them and filesize < 796672
}

Strings (19 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 6a04 6800300000 6887000000 6a00 }
$sequence_1hex{ 83c40c 6860070000 6a40 ff15???????? }
$sequence_2hex{ 8bf8 ff15???????? 8bf0 56 6a40 }
$sequence_3hex{ 6a00 ff15???????? 68???????? 8bd8 }
$sequence_4hex{ 50 ff15???????? 56 53 8bf8 }
$sequence_5hex{ 8bf0 56 53 ff15???????? 50 ff15???????? }
$sequence_6hex{ 833d????????00 0f842e0c0000 83ec08 0fae5c2404 8b442404 25807f0000 3d801f0000 }
$sequence_7hex{ 50 ff15???????? 83c40c 6860070000 }
$sequence_8hex{ 8b1d???????? 8d85d4f7ffff 68???????? 50 ffd3 8d85d4f7ffff 50 }
$sequence_9hex{ ffd0 c3 8bff 55 8bec 83ec1c 8d4de4 }
$sequence_10hex{ 0f85aa010000 68???????? 8d442450 50 }
$sequence_11hex{ ff15???????? 68???????? 8d85dcf7ffff 50 }
$sequence_12hex{ 68???????? 68???????? e8???????? 83c424 6aff }
$sequence_13hex{ 6888130000 ffd7 6a00 6a00 }
$sequence_14hex{ 8d85bcefffff 50 ff15???????? 68???????? }
$sequence_15hex{ 6a00 e8???????? 83c408 6aff ff15???????? }
$sequence_16hex{ 83c424 53 50 ffd6 }
$sequence_17hex{ 83c40c 33f6 85ff 7428 }
$sequence_18hex{ 6aff ffd7 8b4dfc 33c0 }

Condition

7 of them and filesize < 796672

In plain words (Heuristic)

  • The file must be smaller than 796672 (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: 8e6566b7-d723-5b0d-89e0-5f2bf908dee7

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