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MALPEDIA_Win_Quickmute_Auto

autogenerated rule brought to you by yara-signator

MalwareQuickmuteMalpedia 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: Quickmute.

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

Summary generated from the rule's metadata and condition.

Rule source

win-quickmute-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Quickmute_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "5c849e44-acd1-51b9-b726-d3f916023f4f"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.quickmute"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.quickmute_auto.yar#L1-L117"
		license_url = "N/A"
		logic_hash = "4b32b83d8e038504eeda8b7b08cc8cf59bd3c2beb1dc25544e09aed36b939cec"
		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 = { c78550ffffff7265616c c78554ffffff6c6f6300 391d???????? 750f 8d8550ffffff 50 }
		$sequence_1 = { 6a01 6a00 ff15???????? 8906 85c0 7507 b802000000 }
		$sequence_2 = { 0f87bd010000 8d45ec 50 ff15???????? }
		$sequence_3 = { c645b200 750c 8d55a0 52 }
		$sequence_4 = { eb2e 33c0 ebaa f6c102 7407 }
		$sequence_5 = { a3???????? c78568ffffff63616c6c 66c7856cffffff6f63 889d6effffff 391d???????? 750f }
		$sequence_6 = { 7409 be01000000 d3e6 0bd6 49 }
		$sequence_7 = { 889d17ffffff 66c78518ffffff6d6f c6851affffff74 889d1bffffff 66c7851cffffff5468 }
		$sequence_8 = { 8b4508 ff34c550c04000 ff15???????? 5d c3 6a0c }
		$sequence_9 = { c78554ffffff77007300 c78558ffffff20004e00 c7855cffffff54002000 c78560ffffff36002e00 c78564ffffff33003b00 }

	condition:
		7 of them and filesize < 146432
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c78550ffffff7265616c c78554ffffff6c6f6300 391d???????? 750f 8d8550ffffff 50 }
$sequence_1hex{ 6a01 6a00 ff15???????? 8906 85c0 7507 b802000000 }
$sequence_2hex{ 0f87bd010000 8d45ec 50 ff15???????? }
$sequence_3hex{ c645b200 750c 8d55a0 52 }
$sequence_4hex{ eb2e 33c0 ebaa f6c102 7407 }
$sequence_5hex{ a3???????? c78568ffffff63616c6c 66c7856cffffff6f63 889d6effffff 391d???????? 750f }
$sequence_6hex{ 7409 be01000000 d3e6 0bd6 49 }
$sequence_7hex{ 889d17ffffff 66c78518ffffff6d6f c6851affffff74 889d1bffffff 66c7851cffffff5468 }
$sequence_8hex{ 8b4508 ff34c550c04000 ff15???????? 5d c3 6a0c }
$sequence_9hex{ c78554ffffff77007300 c78558ffffff20004e00 c7855cffffff54002000 c78560ffffff36002e00 c78564ffffff33003b00 }

Condition

7 of them and filesize < 146432

In plain words (Heuristic)

  • The file must be smaller than 146432 (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: 5c849e44-acd1-51b9-b726-d3f916023f4f

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