Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Comlook_Auto

autogenerated rule brought to you by yara-signator

MalwareComlookMalpedia 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: Comlook.

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

Summary generated from the rule's metadata and condition.

Rule source

win-comlook-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Comlook_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "2b3d7016-3cfd-5cd3-b4c2-33ea82172f34"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.comlook"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.comlook_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "4e4f5dbf4914c1a3584dd149285bd789e3ba7925f5046364fe53452451d12bad"
		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 = { e8???????? 83c408 85c0 746a 8bcd c744241400000000 3bcf }
		$sequence_1 = { 8d8d70ffffff e8???????? 6a0d 68???????? 8d4d90 e8???????? 6a0a }
		$sequence_2 = { e9???????? 8db5ecfeffff e9???????? 8db52cffffff e9???????? 8b85bcfdffff 83e001 }
		$sequence_3 = { ff15???????? 83c404 3bf4 e8???????? 8b5508 c7425000000000 33c0 }
		$sequence_4 = { e9???????? 8d7dd0 e9???????? 8d7dc4 e9???????? 8d4de0 e9???????? }
		$sequence_5 = { 8b4d08 89816c030000 e9???????? 8b55f8 8995ecfeffff 8b85ecfeffff 8b8decfeffff }
		$sequence_6 = { eb54 837d8c00 762e 8b4524 8b4d20 50 51 }
		$sequence_7 = { a900040000 0f846a020000 83fd02 7d14 68eb050000 68???????? 68a0000000 }
		$sequence_8 = { ffd2 8ac3 e9???????? 68???????? 8d4dd0 e8???????? 8d45a4 }
		$sequence_9 = { e9???????? 83bd30ffffff00 747c 81bd30ffffff12030900 7470 8bf4 8d4dcc }

	condition:
		7 of them and filesize < 4553728
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e8???????? 83c408 85c0 746a 8bcd c744241400000000 3bcf }
$sequence_1hex{ 8d8d70ffffff e8???????? 6a0d 68???????? 8d4d90 e8???????? 6a0a }
$sequence_2hex{ e9???????? 8db5ecfeffff e9???????? 8db52cffffff e9???????? 8b85bcfdffff 83e001 }
$sequence_3hex{ ff15???????? 83c404 3bf4 e8???????? 8b5508 c7425000000000 33c0 }
$sequence_4hex{ e9???????? 8d7dd0 e9???????? 8d7dc4 e9???????? 8d4de0 e9???????? }
$sequence_5hex{ 8b4d08 89816c030000 e9???????? 8b55f8 8995ecfeffff 8b85ecfeffff 8b8decfeffff }
$sequence_6hex{ eb54 837d8c00 762e 8b4524 8b4d20 50 51 }
$sequence_7hex{ a900040000 0f846a020000 83fd02 7d14 68eb050000 68???????? 68a0000000 }
$sequence_8hex{ ffd2 8ac3 e9???????? 68???????? 8d4dd0 e8???????? 8d45a4 }
$sequence_9hex{ e9???????? 83bd30ffffff00 747c 81bd30ffffff12030900 7470 8bf4 8d4dcc }

Condition

7 of them and filesize < 4553728

In plain words (Heuristic)

  • The file must be smaller than 4553728 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

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: 2b3d7016-3cfd-5cd3-b4c2-33ea82172f34

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