YARA · Malpedia signator rules
MALPEDIA_Win_Lock_Pos_Auto
autogenerated rule brought to you by yara-signator
MalwareLock PosMalpedia 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: Lock Pos.
It defines 13 patterns (0 text, 13 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-lock-pos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lock_Pos_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "893a3119-7d49-55c4-9fa3-6ebbdd6f9bec"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lock_pos"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lock_pos_auto.yar#L1-L141"
= "N/A"
= "11ce3da69eddf99fa75931b4f3065c1115c1ccb78ef2820da5235e4566f8ae4d"
= 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 = { 55 8bec 8b4508 8b0d???????? 8b0481 }
$sequence_1 = { 8bec 837d0800 7704 33c0 }
$sequence_2 = { 8d85f8fdffff 50 6a00 6a00 6a23 }
$sequence_3 = { 55 8bec 81eca4040000 56 }
$sequence_4 = { 6a00 6a23 6a00 ff15???????? 8d8df8fdffff }
$sequence_5 = { 50 e8???????? 83c404 8945f0 837df000 741b }
$sequence_6 = { 3b4d0c 7332 8b5508 0355fc 0fbe02 }
$sequence_7 = { 037df8 ff15???????? 394708 7415 8d5f0c 53 }
$sequence_8 = { 53 8bd8 56 8bcb e8???????? 8bd0 03d2 }
$sequence_9 = { 8b45fc 8b4de4 0308 894de8 8b55fc 8b4204 83e808 }
$sequence_10 = { 0f847b010000 57 6a04 5f 8d75b4 }
$sequence_11 = { 8945c8 8955cc 8b550c 33c0 }
$sequence_12 = { 99 8945e0 8955e4 6a04 8d4dc8 }
condition:
7 of them and filesize < 319488
}
Strings (13 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 55 8bec 8b4508 8b0d???????? 8b0481 } | |
| $sequence_1 | hex | { 8bec 837d0800 7704 33c0 } | |
| $sequence_2 | hex | { 8d85f8fdffff 50 6a00 6a00 6a23 } | |
| $sequence_3 | hex | { 55 8bec 81eca4040000 56 } | |
| $sequence_4 | hex | { 6a00 6a23 6a00 ff15???????? 8d8df8fdffff } | |
| $sequence_5 | hex | { 50 e8???????? 83c404 8945f0 837df000 741b } | |
| $sequence_6 | hex | { 3b4d0c 7332 8b5508 0355fc 0fbe02 } | |
| $sequence_7 | hex | { 037df8 ff15???????? 394708 7415 8d5f0c 53 } | |
| $sequence_8 | hex | { 53 8bd8 56 8bcb e8???????? 8bd0 03d2 } | |
| $sequence_9 | hex | { 8b45fc 8b4de4 0308 894de8 8b55fc 8b4204 83e808 } | |
| $sequence_10 | hex | { 0f847b010000 57 6a04 5f 8d75b4 } | |
| $sequence_11 | hex | { 8945c8 8955cc 8b550c 33c0 } | |
| $sequence_12 | hex | { 99 8945e0 8955e4 6a04 8d4dc8 } |
Condition
7 of them and filesize < 319488In plain words (Heuristic)
- The file must be smaller than 319488 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 893a3119-7d49-55c4-9fa3-6ebbdd6f9bec
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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