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MALPEDIA_Win_Mocton_Auto

autogenerated rule brought to you by yara-signator

MalwareMoctonMalpedia 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: Mocton.

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

Summary generated from the rule's metadata and condition.

Rule source

win-mocton-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mocton_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "a65db501-bd68-5659-bb38-ad6b899cd84d"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.mocton"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mocton_auto.yar#L1-L133"
		license_url = "N/A"
		logic_hash = "2e67232f692cd88d3a04d3704851160466fb82bb47c43a0c1d77909b1956ba54"
		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 = { 83f001 0f843f010000 8b4dcc 83c101 894dcc 8b55cc 8b45cc }
		$sequence_1 = { 81c15366cc2a 33d2 3b8d24fbffff 0f95c2 81e23e6061db 81f2607c608b }
		$sequence_2 = { 3d44ee8048 7f0c c785acfdffff01000000 eb0a c785acfdffff00000000 8b95acfdffff 81e20caea439 }
		$sequence_3 = { 8955e8 8b45e8 83e801 8945e8 6a03 68???????? e8???????? }
		$sequence_4 = { 0faf950cfbffff 0faf950cfbffff 89950cfbffff 8b850cfbffff 83c001 89850cfbffff 6a02 }
		$sequence_5 = { 8b8d68feffff 81e9ef3da703 0b8dd4fdffff 7422 8b9568feffff 81f2fcd0115a 81f2bfe3969a }
		$sequence_6 = { 8b9590fdffff c1e209 8b8590fdffff 2bc2 898590fdffff 6800040000 e8???????? }
		$sequence_7 = { 85c9 7462 b8337b9ca9 2b85d8fcffff 33c9 3b85d8fcffff 0f9dc1 }
		$sequence_8 = { 69c972b1ac43 898dacfeffff eb79 8b95acfeffff 83ea01 8995acfeffff 8b85acfeffff }
		$sequence_9 = { 0f9dc1 81c9540e540f 7455 8b9590fdffff c1e209 8b8590fdffff c1e009 }

	condition:
		7 of them and filesize < 573440
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 83f001 0f843f010000 8b4dcc 83c101 894dcc 8b55cc 8b45cc }
$sequence_1hex{ 81c15366cc2a 33d2 3b8d24fbffff 0f95c2 81e23e6061db 81f2607c608b }
$sequence_2hex{ 3d44ee8048 7f0c c785acfdffff01000000 eb0a c785acfdffff00000000 8b95acfdffff 81e20caea439 }
$sequence_3hex{ 8955e8 8b45e8 83e801 8945e8 6a03 68???????? e8???????? }
$sequence_4hex{ 0faf950cfbffff 0faf950cfbffff 89950cfbffff 8b850cfbffff 83c001 89850cfbffff 6a02 }
$sequence_5hex{ 8b8d68feffff 81e9ef3da703 0b8dd4fdffff 7422 8b9568feffff 81f2fcd0115a 81f2bfe3969a }
$sequence_6hex{ 8b9590fdffff c1e209 8b8590fdffff 2bc2 898590fdffff 6800040000 e8???????? }
$sequence_7hex{ 85c9 7462 b8337b9ca9 2b85d8fcffff 33c9 3b85d8fcffff 0f9dc1 }
$sequence_8hex{ 69c972b1ac43 898dacfeffff eb79 8b95acfeffff 83ea01 8995acfeffff 8b85acfeffff }
$sequence_9hex{ 0f9dc1 81c9540e540f 7455 8b9590fdffff c1e209 8b8590fdffff c1e009 }

Condition

7 of them and filesize < 573440

In plain words (Heuristic)

  • The file must be smaller than 573440 (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: a65db501-bd68-5659-bb38-ad6b899cd84d

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