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MALPEDIA_Win_Clambling_Auto

autogenerated rule brought to you by yara-signator

MalwareClamblingMalpedia 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: Clambling.

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

Summary generated from the rule's metadata and condition.

Rule source

win-clambling-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Clambling_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "3e48a631-6b3f-574d-9024-9b07fa4a08b0"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.clambling"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.clambling_auto.yar#L1-L118"
		license_url = "N/A"
		logic_hash = "e92df890e550a324f897959e843521eecd464c3badb0618706ca33cbb43bcce4"
		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 = { 4c8be0 89742420 ff15???????? 488bf0 }
		$sequence_1 = { 4883ec30 488b4108 458bc8 4533c0 498943e8 }
		$sequence_2 = { 8b442450 83f801 7419 83f802 7414 83f803 7508 }
		$sequence_3 = { 4883ec30 33db 488bf9 215c2448 48215c2458 ff15???????? 4c8d442458 }
		$sequence_4 = { ff15???????? 83f8ff 7524 ff15???????? 418bd7 488bcf 8bd8 }
		$sequence_5 = { ff15???????? 488b742478 8bc3 488b5c2470 4883c460 }
		$sequence_6 = { 33f6 33d2 4c8bc3 6689b0c8fbffff }
		$sequence_7 = { 33d2 c744242038020000 895818 8bf3 e8???????? }
		$sequence_8 = { 83f802 7414 83f803 7508 }
		$sequence_9 = { 89442428 4533c0 488bd6 48897c2420 ff15???????? 488b4c2450 }

	condition:
		7 of them and filesize < 412672
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 4c8be0 89742420 ff15???????? 488bf0 }
$sequence_1hex{ 4883ec30 488b4108 458bc8 4533c0 498943e8 }
$sequence_2hex{ 8b442450 83f801 7419 83f802 7414 83f803 7508 }
$sequence_3hex{ 4883ec30 33db 488bf9 215c2448 48215c2458 ff15???????? 4c8d442458 }
$sequence_4hex{ ff15???????? 83f8ff 7524 ff15???????? 418bd7 488bcf 8bd8 }
$sequence_5hex{ ff15???????? 488b742478 8bc3 488b5c2470 4883c460 }
$sequence_6hex{ 33f6 33d2 4c8bc3 6689b0c8fbffff }
$sequence_7hex{ 33d2 c744242038020000 895818 8bf3 e8???????? }
$sequence_8hex{ 83f802 7414 83f803 7508 }
$sequence_9hex{ 89442428 4533c0 488bd6 48897c2420 ff15???????? 488b4c2450 }

Condition

7 of them and filesize < 412672

In plain words (Heuristic)

  • The file must be smaller than 412672 (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: 3e48a631-6b3f-574d-9024-9b07fa4a08b0

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