YARA · Malpedia signator rules
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:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "10e80abb-dba5-5bb5-8fa2-f63fbafbc5c9"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lightlesscan"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lightlesscan_auto.yar#L1-L133"
= "N/A"
= "cb3fef930f62b3f9de3e04845ee7aa006ee74022653dad375fdd7f5f3404bb05"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "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)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 48894c2428 488d8d10040000 488d15fcd80400 48894c2420 488b4c2450 4533c0 ffd0 } | |
| $sequence_1 | hex | { 33d2 41b806020000 6689bd90010000 e8???????? 488d8da2030000 33d2 41b806020000 } | |
| $sequence_2 | hex | { 488bcb ff15???????? 488d15d4670400 41b802000000 498bcc e8???????? 4c8d0517ce0400 } | |
| $sequence_3 | hex | { 90 0f1045c0 0f298590000000 f20f104dd0 f20f118da0000000 b918000000 e8???????? } | |
| $sequence_4 | hex | { 4983c002 48ffc9 75dd 4983e802 33c0 66418900 8d4101 } | |
| $sequence_5 | hex | { 49ffc8 75e7 448bcf 4c8d1d79370600 85db 742b } | |
| $sequence_6 | hex | { 41b802000000 488bce 48c744242000000000 ffd0 488d0dcf800400 e8???????? 4533c9 } | |
| $sequence_7 | hex | { c745f040000000 e8???????? 488d4df0 ffd0 488b4df8 488d95b0060000 48c1e914 } | |
| $sequence_8 | hex | { 488d442478 4d8be8 488bf2 c744243000000000 4889442428 458d4101 33d2 } | |
| $sequence_9 | hex | { 488bf0 b807452ec2 f7eb 448d2c13 41c1fd10 418bcd c1e91f } |
Condition
7 of them and filesize < 1399808In 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.
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.
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)
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
| 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 |
Tags:FILE
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04