YARA · Malpedia signator rules
MALPEDIA_Win_Lechiket_Auto
autogenerated rule brought to you by yara-signator
MalwareLechiketMalpedia 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: Lechiket.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-lechiket-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lechiket_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "50bb5ff6-9983-5192-9148-15d4b532b4b7"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lechiket"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lechiket_auto.yar#L1-L129"
= "N/A"
= "65d3ebe3766eacf2dda256f82461ccb140fa71b5f9a496a2aff1df45cdefa7ae"
= 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 = { 6a06 59 8d7db8 f3ab 8d7dd0 ab ab }
$sequence_1 = { 8908 8b06 c74004???????? a1???????? ba???????? 33c9 }
$sequence_2 = { 0f8569ffffff 0fb7480c 014d0c 8b4dfc 41 394d0c 0f8755ffffff }
$sequence_3 = { e8???????? 68???????? 8d45e4 50 ffd7 ff4df4 }
$sequence_4 = { 50 e8???????? 8bf8 85ff 7414 ff750c ff7508 }
$sequence_5 = { 8bff 55 8bec 83ec78 53 }
$sequence_6 = { 8b45f4 8b4dec 8d4401f8 898564fdffff 897004 8d856cffffff 50 }
$sequence_7 = { 7726 0fbe4813 0fbe5014 83e930 6bc90a 8d4c11d0 49 }
$sequence_8 = { 6639460a 0f8494000000 0fb7560a 3bd0 761d 8b4e18 }
$sequence_9 = { 57 68fe050000 33f6 8d85f4f9ffff 56 50 e8???????? }
condition:
7 of them and filesize < 331776
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 6a06 59 8d7db8 f3ab 8d7dd0 ab ab } | |
| $sequence_1 | hex | { 8908 8b06 c74004???????? a1???????? ba???????? 33c9 } | |
| $sequence_2 | hex | { 0f8569ffffff 0fb7480c 014d0c 8b4dfc 41 394d0c 0f8755ffffff } | |
| $sequence_3 | hex | { e8???????? 68???????? 8d45e4 50 ffd7 ff4df4 } | |
| $sequence_4 | hex | { 50 e8???????? 8bf8 85ff 7414 ff750c ff7508 } | |
| $sequence_5 | hex | { 8bff 55 8bec 83ec78 53 } | |
| $sequence_6 | hex | { 8b45f4 8b4dec 8d4401f8 898564fdffff 897004 8d856cffffff 50 } | |
| $sequence_7 | hex | { 7726 0fbe4813 0fbe5014 83e930 6bc90a 8d4c11d0 49 } | |
| $sequence_8 | hex | { 6639460a 0f8494000000 0fb7560a 3bd0 761d 8b4e18 } | |
| $sequence_9 | hex | { 57 68fe050000 33f6 8d85f4f9ffff 56 50 e8???????? } |
Condition
7 of them and filesize < 331776In plain words (Heuristic)
- The file must be smaller than 331776 (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: 50bb5ff6-9983-5192-9148-15d4b532b4b7
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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