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MALPEDIA_Win_Runningrat_Auto

autogenerated rule brought to you by yara-signator

MalwareRunningratMalpedia 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: Runningrat.

It defines 15 patterns (0 text, 15 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-runningrat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Runningrat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "d4ae73e1-77c4-5c6d-b90f-aa390aa93cd3"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.runningrat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.runningrat_auto.yar#L1-L160"
		license_url = "N/A"
		logic_hash = "af9c36c6cd0f2b297fc8137fa03b7170757e2be4dbf1da23b237e62f33931186"
		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 = { ff15???????? 56 ff15???????? 8b8c2418010000 }
		$sequence_1 = { e8???????? 8a4c2420 6a18 c744241c00000000 }
		$sequence_2 = { e8???????? 85c0 7402 b301 8d4c240c e8???????? }
		$sequence_3 = { 68???????? 68???????? ffd3 8b2d???????? 50 ffd5 68???????? }
		$sequence_4 = { eb08 2bd1 8bc2 89542420 }
		$sequence_5 = { a1???????? 33c4 89842464040000 53 56 }
		$sequence_6 = { 85c0 7559 8b442418 8b4c2430 40 }
		$sequence_7 = { 56 8bf1 8b4e34 8b6e1c 57 8bf8 }
		$sequence_8 = { b914000000 e8???????? 8b54241c 8bf0 8b442418 b914000000 }
		$sequence_9 = { 8b542424 3902 0f84e2000000 8b4c2434 8b542430 56 }
		$sequence_10 = { 81c4f8020000 c20400 8b35???????? 6800000100 6a40 ffd6 8bd8 }
		$sequence_11 = { 33c0 5b c3 b8feffffff }
		$sequence_12 = { e8???????? 8d44241c 83c40c 48 8d4900 }
		$sequence_13 = { 8b442424 c70100000000 8b4c2428 57 c70200000000 }
		$sequence_14 = { d3e8 2be9 8b4e0c 89442414 8b4608 891481 ff4608 }

	condition:
		7 of them and filesize < 275456
}

Strings (15 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ ff15???????? 56 ff15???????? 8b8c2418010000 }
$sequence_1hex{ e8???????? 8a4c2420 6a18 c744241c00000000 }
$sequence_2hex{ e8???????? 85c0 7402 b301 8d4c240c e8???????? }
$sequence_3hex{ 68???????? 68???????? ffd3 8b2d???????? 50 ffd5 68???????? }
$sequence_4hex{ eb08 2bd1 8bc2 89542420 }
$sequence_5hex{ a1???????? 33c4 89842464040000 53 56 }
$sequence_6hex{ 85c0 7559 8b442418 8b4c2430 40 }
$sequence_7hex{ 56 8bf1 8b4e34 8b6e1c 57 8bf8 }
$sequence_8hex{ b914000000 e8???????? 8b54241c 8bf0 8b442418 b914000000 }
$sequence_9hex{ 8b542424 3902 0f84e2000000 8b4c2434 8b542430 56 }
$sequence_10hex{ 81c4f8020000 c20400 8b35???????? 6800000100 6a40 ffd6 8bd8 }
$sequence_11hex{ 33c0 5b c3 b8feffffff }
$sequence_12hex{ e8???????? 8d44241c 83c40c 48 8d4900 }
$sequence_13hex{ 8b442424 c70100000000 8b4c2428 57 c70200000000 }
$sequence_14hex{ d3e8 2be9 8b4e0c 89442414 8b4608 891481 ff4608 }

Condition

7 of them and filesize < 275456

In plain words (Heuristic)

  • The file must be smaller than 275456 (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: d4ae73e1-77c4-5c6d-b90f-aa390aa93cd3

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