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MALPEDIA_Win_Lokipws_Auto

autogenerated rule brought to you by yara-signator

MalwareLokipwsMalpedia 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: Lokipws.

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

Summary generated from the rule's metadata and condition.

Rule source

win-lokipws-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lokipws_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "28a37e40-8f10-56c7-aff1-c4b33090b017"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.lokipws"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lokipws_auto.yar#L1-L132"
		license_url = "N/A"
		logic_hash = "b547f535c2ccd572397541fb51a9ce5f4b7af301f4acf0d96578b7cd1f9d5cd8"
		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 = { c78588f5ffff00488bcb c7858cf5ffff488945c0 c78590f5ffffffd7498d c78594f5ffff950a0100 c78598f5ffff00488bcb c7859cf5ffff48894424 c785a0f5ffff40ffd749 }
		$sequence_1 = { 68???????? ff36 8945f4 e8???????? 68???????? ff36 8bf8 }
		$sequence_2 = { 50 66897dd4 668955da 66894ddc 66897de4 668955ea 66894dec }
		$sequence_3 = { 8d4588 56 50 668955b6 668955c2 66897dc4 66895dcc }
		$sequence_4 = { 8b4510 83c410 8bde 8975f8 8975fc 8d50ff 03550c }
		$sequence_5 = { c785e0f5ffff8bcb4c8b c785e4f5fffff8ffd749 c785e8f5ffff8d950402 c785ecf5ffff0000488b c785f0f5ffffcb488bf0 c785f4f5ffffffd7498d c785f8f5ffff95cc0200 }
		$sequence_6 = { c7855cf5ffff0f84880a c78560f5ffff0000498d c78564f5ffff95a60000 c78568f5ffff00488bc8 c7856cf5ffff4c89b424 c78570f5ffff00010000 c78574f5ffffffd7498d }
		$sequence_7 = { 891d???????? 56 85c0 0f85cc010000 57 68bc020000 }
		$sequence_8 = { 83c40c ff05???????? 5e 5d c3 55 8bec }
		$sequence_9 = { e8???????? 8d4df8 51 57 57 6a01 }

	condition:
		7 of them and filesize < 1327104
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c78588f5ffff00488bcb c7858cf5ffff488945c0 c78590f5ffffffd7498d c78594f5ffff950a0100 c78598f5ffff00488bcb c7859cf5ffff48894424 c785a0f5ffff40ffd749 }
$sequence_1hex{ 68???????? ff36 8945f4 e8???????? 68???????? ff36 8bf8 }
$sequence_2hex{ 50 66897dd4 668955da 66894ddc 66897de4 668955ea 66894dec }
$sequence_3hex{ 8d4588 56 50 668955b6 668955c2 66897dc4 66895dcc }
$sequence_4hex{ 8b4510 83c410 8bde 8975f8 8975fc 8d50ff 03550c }
$sequence_5hex{ c785e0f5ffff8bcb4c8b c785e4f5fffff8ffd749 c785e8f5ffff8d950402 c785ecf5ffff0000488b c785f0f5ffffcb488bf0 c785f4f5ffffffd7498d c785f8f5ffff95cc0200 }
$sequence_6hex{ c7855cf5ffff0f84880a c78560f5ffff0000498d c78564f5ffff95a60000 c78568f5ffff00488bc8 c7856cf5ffff4c89b424 c78570f5ffff00010000 c78574f5ffffffd7498d }
$sequence_7hex{ 891d???????? 56 85c0 0f85cc010000 57 68bc020000 }
$sequence_8hex{ 83c40c ff05???????? 5e 5d c3 55 8bec }
$sequence_9hex{ e8???????? 8d4df8 51 57 57 6a01 }

Condition

7 of them and filesize < 1327104

In plain words (Heuristic)

  • The file must be smaller than 1327104 (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: 28a37e40-8f10-56c7-aff1-c4b33090b017

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