Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Mongall_Auto

autogenerated rule brought to you by yara-signator

MalwareMongallMalpedia 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: Mongall.

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

Summary generated from the rule's metadata and condition.

Rule source

win-mongall-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Mongall_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "03718745-4a20-5f11-8c49-ba07375d1462"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.mongall"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.mongall_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "d6d636cdb8a13c0a4cd956dbb80c2d5a73c159bd69bf56599b6f6938ee91dc2a"
		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 = { 75ef 57 bf???????? e8???????? 6a7f }
		$sequence_1 = { 6800000080 8d8df8feffff 51 ff15???????? 8bf8 83ffff 7413 }
		$sequence_2 = { 83c404 5e b801000000 5b c3 83f806 7543 }
		$sequence_3 = { 75f9 8bbd68d7ffff 2bc6 4f 8a4f01 47 }
		$sequence_4 = { ffd7 a1???????? 3bc6 7415 8b4d0c 8b5508 56 }
		$sequence_5 = { 85f6 7fdf eb07 838de4fdffffff 83bdccfdffff00 8b9de0fdffff 7457 }
		$sequence_6 = { c745fc00000000 8b7df8 85ff 7509 }
		$sequence_7 = { 7523 3985a0fdffff 741b ffb5a0fdffff 8d85e4fdffff 8d4df4 e8???????? }
		$sequence_8 = { 0fbe8028e24000 83e00f eb02 33c0 }
		$sequence_9 = { 33c9 68???????? 51 6a03 }

	condition:
		7 of them and filesize < 199680
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 75ef 57 bf???????? e8???????? 6a7f }
$sequence_1hex{ 6800000080 8d8df8feffff 51 ff15???????? 8bf8 83ffff 7413 }
$sequence_2hex{ 83c404 5e b801000000 5b c3 83f806 7543 }
$sequence_3hex{ 75f9 8bbd68d7ffff 2bc6 4f 8a4f01 47 }
$sequence_4hex{ ffd7 a1???????? 3bc6 7415 8b4d0c 8b5508 56 }
$sequence_5hex{ 85f6 7fdf eb07 838de4fdffffff 83bdccfdffff00 8b9de0fdffff 7457 }
$sequence_6hex{ c745fc00000000 8b7df8 85ff 7509 }
$sequence_7hex{ 7523 3985a0fdffff 741b ffb5a0fdffff 8d85e4fdffff 8d4df4 e8???????? }
$sequence_8hex{ 0fbe8028e24000 83e00f eb02 33c0 }
$sequence_9hex{ 33c9 68???????? 51 6a03 }

Condition

7 of them and filesize < 199680

In plain words (Heuristic)

  • The file must be smaller than 199680 (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: 03718745-4a20-5f11-8c49-ba07375d1462

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