Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Wormhole_Auto

autogenerated rule brought to you by yara-signator

MalwareWormholeMalpedia 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: Wormhole.

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

Summary generated from the rule's metadata and condition.

Rule source

win-wormhole-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Wormhole_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "2660a472-0fa7-5fc7-8a67-f6ed78518542"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.wormhole"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.wormhole_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "c4f8903c84f1d17566cf9e80014bb26aef3a10f00ebffc94816ddb8e38fee7df"
		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 = { 7507 837c240c66 7412 56 e8???????? 83c404 83ceff }
		$sequence_1 = { c3 8b542421 33c0 8917 5f }
		$sequence_2 = { 57 8b7c2410 6a78 6a28 57 50 e8???????? }
		$sequence_3 = { 891d???????? e8???????? 83c41c 85c0 }
		$sequence_4 = { 7535 8b44241c 85c0 742d }
		$sequence_5 = { b800400000 89442408 6a00 8d4c2410 50 51 56 }
		$sequence_6 = { 83c408 8d542410 6aff 6a01 }
		$sequence_7 = { 83c40c 83feff 7429 8d54240c 895c240c 52 56 }
		$sequence_8 = { 40 83c040 89442418 50 8d442420 50 e8???????? }
		$sequence_9 = { e8???????? 8b442430 8bb42434010000 83c004 6a0f 8d4c2434 }

	condition:
		7 of them and filesize < 99576
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 7507 837c240c66 7412 56 e8???????? 83c404 83ceff }
$sequence_1hex{ c3 8b542421 33c0 8917 5f }
$sequence_2hex{ 57 8b7c2410 6a78 6a28 57 50 e8???????? }
$sequence_3hex{ 891d???????? e8???????? 83c41c 85c0 }
$sequence_4hex{ 7535 8b44241c 85c0 742d }
$sequence_5hex{ b800400000 89442408 6a00 8d4c2410 50 51 56 }
$sequence_6hex{ 83c408 8d542410 6aff 6a01 }
$sequence_7hex{ 83c40c 83feff 7429 8d54240c 895c240c 52 56 }
$sequence_8hex{ 40 83c040 89442418 50 8d442420 50 e8???????? }
$sequence_9hex{ e8???????? 8b442430 8bb42434010000 83c004 6a0f 8d4c2434 }

Condition

7 of them and filesize < 99576

In plain words (Heuristic)

  • The file must be smaller than 99576 (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: 2660a472-0fa7-5fc7-8a67-f6ed78518542

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