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MALPEDIA_Win_Combos_Auto

autogenerated rule brought to you by yara-signator

MalwareCombosMalpedia 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: Combos.

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

Summary generated from the rule's metadata and condition.

Rule source

win-combos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Combos_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "0fc120d2-6213-5d13-b8ed-e7573d6552f8"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.combos"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.combos_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "a2108d4b57b9f4a8fbe6693087fb932791a19ebd1cb49ceb2f83454ee1bbc1b1"
		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 = { 0bc5 33c1 8b848600ffffff 0bc7 5f 5e }
		$sequence_1 = { 8b34b5201b0110 8d04c0 8b0486 83f8ff 7404 85c0 }
		$sequence_2 = { 66ab aa 8b84240c020000 8bbc2408020000 83e800 893d???????? 0f8499000000 }
		$sequence_3 = { 895de0 895de4 895dd8 895dfc }
		$sequence_4 = { 50 e8???????? eb0f 8d4c2418 8d542420 51 }
		$sequence_5 = { 8b9c9600040000 8a51ff 0bfb 49 8bd8 83e23f }
		$sequence_6 = { 7358 8bc1 c1f805 8d3c85201b0110 8bc1 83e01f 8d34c0 }
		$sequence_7 = { 89742418 c744241c02000000 ff15???????? 8d542418 52 }
		$sequence_8 = { 750e 8b9424a8000000 8a4c240c 880cf2 }
		$sequence_9 = { 50 e8???????? 83c418 8d4c2404 68???????? 51 ff15???????? }

	condition:
		7 of them and filesize < 163840
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 0bc5 33c1 8b848600ffffff 0bc7 5f 5e }
$sequence_1hex{ 8b34b5201b0110 8d04c0 8b0486 83f8ff 7404 85c0 }
$sequence_2hex{ 66ab aa 8b84240c020000 8bbc2408020000 83e800 893d???????? 0f8499000000 }
$sequence_3hex{ 895de0 895de4 895dd8 895dfc }
$sequence_4hex{ 50 e8???????? eb0f 8d4c2418 8d542420 51 }
$sequence_5hex{ 8b9c9600040000 8a51ff 0bfb 49 8bd8 83e23f }
$sequence_6hex{ 7358 8bc1 c1f805 8d3c85201b0110 8bc1 83e01f 8d34c0 }
$sequence_7hex{ 89742418 c744241c02000000 ff15???????? 8d542418 52 }
$sequence_8hex{ 750e 8b9424a8000000 8a4c240c 880cf2 }
$sequence_9hex{ 50 e8???????? 83c418 8d4c2404 68???????? 51 ff15???????? }

Condition

7 of them and filesize < 163840

In plain words (Heuristic)

  • The file must be smaller than 163840 (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: 0fc120d2-6213-5d13-b8ed-e7573d6552f8

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