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MALPEDIA_Win_Moker_Auto

autogenerated rule brought to you by yara-signator

MalwareMokerMalpedia 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: Moker.

It defines 16 patterns (0 text, 16 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-moker-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Moker_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "69bbf83d-0ab5-5acb-b2d7-513d1190be4e"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.moker"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.moker_auto.yar#L1-L164"
		license_url = "N/A"
		logic_hash = "aa8088f026aef50ec0840174b29fe27672f04ec00cf10e28a3ac1c6b80820555"
		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 = { 0302 8945d4 8b4dd4 83c102 }
		$sequence_1 = { 0302 8945e8 8b4df8 8b55fc }
		$sequence_2 = { 6a00 8b4584 50 e8???????? 83c408 894590 837d0800 }
		$sequence_3 = { 0100 83c414 85c0 7502 }
		$sequence_4 = { 0302 8945dc 8b45dc 83c002 }
		$sequence_5 = { 0100 0101 0001 0101 0001 0101 }
		$sequence_6 = { 0301 8945e0 e8???????? 8b55e8 }
		$sequence_7 = { 0302 50 e8???????? 83c404 3b450c 750b 8b4df0 }
		$sequence_8 = { d0838b3f8d57 1c8d 8bae03000029 d1894a018d57 318d8bd20700 }
		$sequence_9 = { 89442408 48 85c0 0f8409010000 41 c6042401 }
		$sequence_10 = { 8f86b0000000 ff7108 8f86b4000000 31c0 48 5e }
		$sequence_11 = { 6887000000 ed 713d 8907 }
		$sequence_12 = { 50 ff15???????? ed 8408 ebe4 }
		$sequence_13 = { 8b450c 2580000000 83f800 741d }
		$sequence_14 = { 48 5e 5f 5b c9 c20400 b800000000 }
		$sequence_15 = { 31c0 40 59 5a c9 }

	condition:
		7 of them and filesize < 1761280
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 0302 8945d4 8b4dd4 83c102 }
$sequence_1hex{ 0302 8945e8 8b4df8 8b55fc }
$sequence_2hex{ 6a00 8b4584 50 e8???????? 83c408 894590 837d0800 }
$sequence_3hex{ 0100 83c414 85c0 7502 }
$sequence_4hex{ 0302 8945dc 8b45dc 83c002 }
$sequence_5hex{ 0100 0101 0001 0101 0001 0101 }
$sequence_6hex{ 0301 8945e0 e8???????? 8b55e8 }
$sequence_7hex{ 0302 50 e8???????? 83c404 3b450c 750b 8b4df0 }
$sequence_8hex{ d0838b3f8d57 1c8d 8bae03000029 d1894a018d57 318d8bd20700 }
$sequence_9hex{ 89442408 48 85c0 0f8409010000 41 c6042401 }
$sequence_10hex{ 8f86b0000000 ff7108 8f86b4000000 31c0 48 5e }
$sequence_11hex{ 6887000000 ed 713d 8907 }
$sequence_12hex{ 50 ff15???????? ed 8408 ebe4 }
$sequence_13hex{ 8b450c 2580000000 83f800 741d }
$sequence_14hex{ 48 5e 5f 5b c9 c20400 b800000000 }
$sequence_15hex{ 31c0 40 59 5a c9 }

Condition

7 of them and filesize < 1761280

In plain words (Heuristic)

  • The file must be smaller than 1761280 (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: 69bbf83d-0ab5-5acb-b2d7-513d1190be4e

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