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MALPEDIA_Win_Mmon_Auto

autogenerated rule brought to you by yara-signator

MalwareMmonMalpedia 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: Mmon.

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

Summary generated from the rule's metadata and condition.

Rule source

win-mmon-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mmon_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "382929e5-1aeb-598e-80b4-b2e35ebdd0a4"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.mmon"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mmon_auto.yar#L1-L113"
		license_url = "N/A"
		logic_hash = "bd55b6e13ac8428dd80e1dee9e31e812c7feeb4888fce48507e76b5a5abcc4d1"
		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 = { 7524 a1???????? a3???????? a1???????? c705????????c8234100 }
		$sequence_1 = { 8945fc 8bcf 8d45d4 e8???????? }
		$sequence_2 = { 89480c 8b45d0 8975e0 3975e4 7303 }
		$sequence_3 = { 68???????? 56 897dfc 89bd4cffffff 898d50ffffff }
		$sequence_4 = { 52 e8???????? 83c404 bb08000000 837de410 }
		$sequence_5 = { 40 0080af4000a4 af 40 }
		$sequence_6 = { c1f905 83e01f c1e006 03048d606a4200 eb05 b8???????? f6402480 }
		$sequence_7 = { 897c2424 c74424141ce34100 e8???????? f6c102 }
		$sequence_8 = { 83c404 c645fc00 837dc810 c745e40f000000 c745e000000000 c645d000 }
		$sequence_9 = { 8d541246 51 2bc2 8d4db4 }

	condition:
		7 of them and filesize < 356352
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 7524 a1???????? a3???????? a1???????? c705????????c8234100 }
$sequence_1hex{ 8945fc 8bcf 8d45d4 e8???????? }
$sequence_2hex{ 89480c 8b45d0 8975e0 3975e4 7303 }
$sequence_3hex{ 68???????? 56 897dfc 89bd4cffffff 898d50ffffff }
$sequence_4hex{ 52 e8???????? 83c404 bb08000000 837de410 }
$sequence_5hex{ 40 0080af4000a4 af 40 }
$sequence_6hex{ c1f905 83e01f c1e006 03048d606a4200 eb05 b8???????? f6402480 }
$sequence_7hex{ 897c2424 c74424141ce34100 e8???????? f6c102 }
$sequence_8hex{ 83c404 c645fc00 837dc810 c745e40f000000 c745e000000000 c645d000 }
$sequence_9hex{ 8d541246 51 2bc2 8d4db4 }

Condition

7 of them and filesize < 356352

In plain words (Heuristic)

  • The file must be smaller than 356352 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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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: 382929e5-1aeb-598e-80b4-b2e35ebdd0a4

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