YARA · Malpedia signator rules
MALPEDIA_Win_Lockfile_Auto
autogenerated rule brought to you by yara-signator
MalwareLockfileMalpedia 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: Lockfile.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-lockfile-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lockfile_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "bd2815c9-f0d4-5e6a-ac59-7f8b5622f6e2"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lockfile"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lockfile_auto.yar#L1-L134"
= "N/A"
= "8ee706fbef80f56d51cc417aea7b798f4101c5e772f6f45d61ddc8fb2a17000b"
= 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 = { 4881c488000000 c3 488d1520580600 488d4c2420 e8???????? 90 488d542420 }
$sequence_1 = { 4983d100 48894120 488b4d50 498b4328 4f8d040a 48f721 4d8d1c00 }
$sequence_2 = { 488d056aba0300 4889442420 488d4c2468 e8???????? 90 4c8d4718 488bd3 }
$sequence_3 = { 4889542428 488955d8 4c8945e8 66660f1f840000000000 4c8921 4c896108 4c896110 }
$sequence_4 = { 8b44243c c1e808 8944243c 0fb644243c c1e003 4898 488d0dff390700 }
$sequence_5 = { 4c8d0de9e10400 4533c0 418d501a 488d4db7 e8???????? 0f1000 0f1145d7 }
$sequence_6 = { 4c3b4597 4c8b458f 4883d700 483bc1 4983d000 493bd1 4c13c7 }
$sequence_7 = { 48c1fa05 488bc2 48c1e83f 4803d0 488bca 48d1e9 488bc7 }
$sequence_8 = { c645d64b c645d750 c645d83f c645d987 40887dda 0fb64580 0fb6440d80 }
$sequence_9 = { 89442438 0fb6442438 488d0d6a320700 488d04c1 b901000000 486bc901 ba01000000 }
condition:
7 of them and filesize < 1163264
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 4881c488000000 c3 488d1520580600 488d4c2420 e8???????? 90 488d542420 } | |
| $sequence_1 | hex | { 4983d100 48894120 488b4d50 498b4328 4f8d040a 48f721 4d8d1c00 } | |
| $sequence_2 | hex | { 488d056aba0300 4889442420 488d4c2468 e8???????? 90 4c8d4718 488bd3 } | |
| $sequence_3 | hex | { 4889542428 488955d8 4c8945e8 66660f1f840000000000 4c8921 4c896108 4c896110 } | |
| $sequence_4 | hex | { 8b44243c c1e808 8944243c 0fb644243c c1e003 4898 488d0dff390700 } | |
| $sequence_5 | hex | { 4c8d0de9e10400 4533c0 418d501a 488d4db7 e8???????? 0f1000 0f1145d7 } | |
| $sequence_6 | hex | { 4c3b4597 4c8b458f 4883d700 483bc1 4983d000 493bd1 4c13c7 } | |
| $sequence_7 | hex | { 48c1fa05 488bc2 48c1e83f 4803d0 488bca 48d1e9 488bc7 } | |
| $sequence_8 | hex | { c645d64b c645d750 c645d83f c645d987 40887dda 0fb64580 0fb6440d80 } | |
| $sequence_9 | hex | { 89442438 0fb6442438 488d0d6a320700 488d04c1 b901000000 486bc901 ba01000000 } |
Condition
7 of them and filesize < 1163264In plain words (Heuristic)
- The file must be smaller than 1163264 (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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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: bd2815c9-f0d4-5e6a-ac59-7f8b5622f6e2
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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