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MALPEDIA_Win_Lightlesscan_Auto

autogenerated rule brought to you by yara-signator

MalwareLightlesscanMalpedia 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: Lightlesscan.

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

Summary generated from the rule's metadata and condition.

Rule source

win-lightlesscan-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lightlesscan_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "10e80abb-dba5-5bb5-8fa2-f63fbafbc5c9"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.lightlesscan"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lightlesscan_auto.yar#L1-L133"
		license_url = "N/A"
		logic_hash = "cb3fef930f62b3f9de3e04845ee7aa006ee74022653dad375fdd7f5f3404bb05"
		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 = { 48894c2428 488d8d10040000 488d15fcd80400 48894c2420 488b4c2450 4533c0 ffd0 }
		$sequence_1 = { 33d2 41b806020000 6689bd90010000 e8???????? 488d8da2030000 33d2 41b806020000 }
		$sequence_2 = { 488bcb ff15???????? 488d15d4670400 41b802000000 498bcc e8???????? 4c8d0517ce0400 }
		$sequence_3 = { 90 0f1045c0 0f298590000000 f20f104dd0 f20f118da0000000 b918000000 e8???????? }
		$sequence_4 = { 4983c002 48ffc9 75dd 4983e802 33c0 66418900 8d4101 }
		$sequence_5 = { 49ffc8 75e7 448bcf 4c8d1d79370600 85db 742b }
		$sequence_6 = { 41b802000000 488bce 48c744242000000000 ffd0 488d0dcf800400 e8???????? 4533c9 }
		$sequence_7 = { c745f040000000 e8???????? 488d4df0 ffd0 488b4df8 488d95b0060000 48c1e914 }
		$sequence_8 = { 488d442478 4d8be8 488bf2 c744243000000000 4889442428 458d4101 33d2 }
		$sequence_9 = { 488bf0 b807452ec2 f7eb 448d2c13 41c1fd10 418bcd c1e91f }

	condition:
		7 of them and filesize < 1399808
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 48894c2428 488d8d10040000 488d15fcd80400 48894c2420 488b4c2450 4533c0 ffd0 }
$sequence_1hex{ 33d2 41b806020000 6689bd90010000 e8???????? 488d8da2030000 33d2 41b806020000 }
$sequence_2hex{ 488bcb ff15???????? 488d15d4670400 41b802000000 498bcc e8???????? 4c8d0517ce0400 }
$sequence_3hex{ 90 0f1045c0 0f298590000000 f20f104dd0 f20f118da0000000 b918000000 e8???????? }
$sequence_4hex{ 4983c002 48ffc9 75dd 4983e802 33c0 66418900 8d4101 }
$sequence_5hex{ 49ffc8 75e7 448bcf 4c8d1d79370600 85db 742b }
$sequence_6hex{ 41b802000000 488bce 48c744242000000000 ffd0 488d0dcf800400 e8???????? 4533c9 }
$sequence_7hex{ c745f040000000 e8???????? 488d4df0 ffd0 488b4df8 488d95b0060000 48c1e914 }
$sequence_8hex{ 488d442478 4d8be8 488bf2 c744243000000000 4889442428 458d4101 33d2 }
$sequence_9hex{ 488bf0 b807452ec2 f7eb 448d2c13 41c1fd10 418bcd c1e91f }

Condition

7 of them and filesize < 1399808

In plain words (Heuristic)

  • The file must be smaller than 1399808 (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: 10e80abb-dba5-5bb5-8fa2-f63fbafbc5c9

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