YARA · Malpedia signator rules
MALPEDIA_Win_Lightwork_Auto
autogenerated rule brought to you by yara-signator
MalwareLightworkMalpedia 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: Lightwork.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-lightwork-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lightwork_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "3e77cece-ce12-583c-b0fa-21f3abd95124"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lightwork"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lightwork_auto.yar#L1-L127"
= "N/A"
= "8b837f7d479730c614e8608265b8bad4ca26759cd3f1963e05c894ac8cb3527b"
= 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 = { 885001 90 5d c3 55 89e5 8b4508 }
$sequence_1 = { 7410 8345fc01 8b4508 8b00 3945fc 72df eb01 }
$sequence_2 = { 8910 8b4508 d94510 d9580c 8b4508 0fb655f4 885010 }
$sequence_3 = { 8b4508 8b88b8010000 8b98bc010000 8b45f0 }
$sequence_4 = { e8???????? 8945f4 8d45f0 89442404 8d45cc 890424 e8???????? }
$sequence_5 = { c780e001000000000000 8b45f4 c780e401000000000000 8b45f4 c780e801000000000000 8b45f4 }
$sequence_6 = { 8b4010 99 c1ea18 01d0 }
$sequence_7 = { e8???????? 8945f4 e9???????? c745f005000000 8b4508 890424 e8???????? }
$sequence_8 = { 8b4008 8b4004 8b5508 891424 ffd0 90 c9 }
$sequence_9 = { 8b80e8010000 85c0 747e 8b4508 8b80e8010000 8b5508 8b92ec010000 }
condition:
7 of them and filesize < 1132544
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 885001 90 5d c3 55 89e5 8b4508 } | |
| $sequence_1 | hex | { 7410 8345fc01 8b4508 8b00 3945fc 72df eb01 } | |
| $sequence_2 | hex | { 8910 8b4508 d94510 d9580c 8b4508 0fb655f4 885010 } | |
| $sequence_3 | hex | { 8b4508 8b88b8010000 8b98bc010000 8b45f0 } | |
| $sequence_4 | hex | { e8???????? 8945f4 8d45f0 89442404 8d45cc 890424 e8???????? } | |
| $sequence_5 | hex | { c780e001000000000000 8b45f4 c780e401000000000000 8b45f4 c780e801000000000000 8b45f4 } | |
| $sequence_6 | hex | { 8b4010 99 c1ea18 01d0 } | |
| $sequence_7 | hex | { e8???????? 8945f4 e9???????? c745f005000000 8b4508 890424 e8???????? } | |
| $sequence_8 | hex | { 8b4008 8b4004 8b5508 891424 ffd0 90 c9 } | |
| $sequence_9 | hex | { 8b80e8010000 85c0 747e 8b4508 8b80e8010000 8b5508 8b92ec010000 } |
Condition
7 of them and filesize < 1132544In plain words (Heuristic)
- The file must be smaller than 1132544 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
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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: 3e77cece-ce12-583c-b0fa-21f3abd95124
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
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