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MALPEDIA_Win_Wannahusky_Auto

autogenerated rule brought to you by yara-signator

MalwareWannahuskyMalpedia 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: Wannahusky.

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

Summary generated from the rule's metadata and condition.

Rule source

win-wannahusky-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Wannahusky_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "d07bf394-315f-5a24-9069-13fbab096483"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.wannahusky"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.wannahusky_auto.yar#L1-L115"
		license_url = "N/A"
		logic_hash = "48e1e3f7fa02618598c79905c2c3fa94624d56bff69420b790850e4ab59601f6"
		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 = { c7042400000000 89f1 89da e8???????? 89c3 a1???????? }
		$sequence_1 = { c605????????12 c705????????00000000 c705????????28b34100 c705????????00000000 c705????????04000000 }
		$sequence_2 = { c700???????? 89582c c74004???????? c74008???????? c7400c94cb4000 c74010ddcb4000 }
		$sequence_3 = { c605????????11 c705????????80bb4100 c705????????00000000 c605????????02 c705????????70b24100 c705????????04000000 c705????????04000000 }
		$sequence_4 = { 89d7 f3a5 8d8d98fbffff 89442404 }
		$sequence_5 = { c705????????0c1e4100 c705????????f0b54100 c705????????04000000 c705????????04000000 }
		$sequence_6 = { c705????????02000000 c605????????02 c705????????80b44100 c705????????a8b54100 c705????????04000000 c705????????04000000 c605????????16 }
		$sequence_7 = { e8???????? ba01000000 8d8dfcfaffff 8985fcfaffff }
		$sequence_8 = { c705????????f91d4100 c705????????0a000000 c605????????02 c705????????20b64100 }
		$sequence_9 = { e8???????? 8b45e4 8945c4 837dc400 }

	condition:
		7 of them and filesize < 862208
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c7042400000000 89f1 89da e8???????? 89c3 a1???????? }
$sequence_1hex{ c605????????12 c705????????00000000 c705????????28b34100 c705????????00000000 c705????????04000000 }
$sequence_2hex{ c700???????? 89582c c74004???????? c74008???????? c7400c94cb4000 c74010ddcb4000 }
$sequence_3hex{ c605????????11 c705????????80bb4100 c705????????00000000 c605????????02 c705????????70b24100 c705????????04000000 c705????????04000000 }
$sequence_4hex{ 89d7 f3a5 8d8d98fbffff 89442404 }
$sequence_5hex{ c705????????0c1e4100 c705????????f0b54100 c705????????04000000 c705????????04000000 }
$sequence_6hex{ c705????????02000000 c605????????02 c705????????80b44100 c705????????a8b54100 c705????????04000000 c705????????04000000 c605????????16 }
$sequence_7hex{ e8???????? ba01000000 8d8dfcfaffff 8985fcfaffff }
$sequence_8hex{ c705????????f91d4100 c705????????0a000000 c605????????02 c705????????20b64100 }
$sequence_9hex{ e8???????? 8b45e4 8945c4 837dc400 }

Condition

7 of them and filesize < 862208

In plain words (Heuristic)

  • The file must be smaller than 862208 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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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: d07bf394-315f-5a24-9069-13fbab096483

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