YARA · Malpedia signator rules
MALPEDIA_Win_Lambert_Auto
autogenerated rule brought to you by yara-signator
MalwareLambertMalpedia 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: Lambert.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-lambert-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lambert_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "f7df9e01-4453-533c-813f-915aa9f6b16b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lambert"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lambert_auto.yar#L1-L173"
= "N/A"
= "e962fdd46748b54901f5fa4e2a5bf76c62195e73f61927694baad41b7e26a417"
= 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 = { 33d1 33da 8970f0 8958fc 8948f4 8950f8 5f }
$sequence_1 = { 3b7d10 0f82bd000000 3bf9 0f83b5000000 2bd9 8d4602 3bd8 }
$sequence_2 = { ebce 8b45f8 8be5 5d c20400 55 }
$sequence_3 = { 05f0000000 832000 33f2 8b55e8 }
$sequence_4 = { 0f8c1fffffff 8b07 8901 6a04 }
$sequence_5 = { 83ec1c c745ec00000000 8b4508 8945f8 8b4df8 0fb711 81fa4d5a0000 }
$sequence_6 = { 8b421c 8945f4 8b4df4 894df0 8b55f4 8b4220 }
$sequence_7 = { 8b4d0c 8b5508 035124 8955f8 c745fc00000000 }
$sequence_8 = { 8b55f8 c1e213 0bca 894df8 8b45fc 0fbe08 034df8 }
$sequence_9 = { 3bd8 0f826f010000 8a07 8801 }
$sequence_10 = { 0fb702 85c0 7428 8b4df8 }
$sequence_11 = { 8b4d08 03481c 894de4 8b55f4 8b45e4 8b4d08 }
$sequence_12 = { 3b7d10 724d 3bf9 7349 8bc3 2bc1 }
$sequence_13 = { 0f8208010000 803a00 74e6 0fb602 }
$sequence_14 = { 8955f4 8b45f4 50 e8???????? 8945e8 8b4de8 3b4d10 }
$sequence_15 = { 03f8 4e 4e 8b1f 8919 2bf0 03c8 }
condition:
7 of them and filesize < 1205248
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 33d1 33da 8970f0 8958fc 8948f4 8950f8 5f } | |
| $sequence_1 | hex | { 3b7d10 0f82bd000000 3bf9 0f83b5000000 2bd9 8d4602 3bd8 } | |
| $sequence_2 | hex | { ebce 8b45f8 8be5 5d c20400 55 } | |
| $sequence_3 | hex | { 05f0000000 832000 33f2 8b55e8 } | |
| $sequence_4 | hex | { 0f8c1fffffff 8b07 8901 6a04 } | |
| $sequence_5 | hex | { 83ec1c c745ec00000000 8b4508 8945f8 8b4df8 0fb711 81fa4d5a0000 } | |
| $sequence_6 | hex | { 8b421c 8945f4 8b4df4 894df0 8b55f4 8b4220 } | |
| $sequence_7 | hex | { 8b4d0c 8b5508 035124 8955f8 c745fc00000000 } | |
| $sequence_8 | hex | { 8b55f8 c1e213 0bca 894df8 8b45fc 0fbe08 034df8 } | |
| $sequence_9 | hex | { 3bd8 0f826f010000 8a07 8801 } | |
| $sequence_10 | hex | { 0fb702 85c0 7428 8b4df8 } | |
| $sequence_11 | hex | { 8b4d08 03481c 894de4 8b55f4 8b45e4 8b4d08 } | |
| $sequence_12 | hex | { 3b7d10 724d 3bf9 7349 8bc3 2bc1 } | |
| $sequence_13 | hex | { 0f8208010000 803a00 74e6 0fb602 } | |
| $sequence_14 | hex | { 8955f4 8b45f4 50 e8???????? 8945e8 8b4de8 3b4d10 } | |
| $sequence_15 | hex | { 03f8 4e 4e 8b1f 8919 2bf0 03c8 } |
Condition
7 of them and filesize < 1205248In plain words (Heuristic)
- The file must be smaller than 1205248 (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: f7df9e01-4453-533c-813f-915aa9f6b16b
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