YARA · Malpedia signator rules
MALPEDIA_Win_Lumar_Auto
autogenerated rule brought to you by yara-signator
- 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: Lumar.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-lumar-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lumar_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "e881dc92-d171-5105-bb07-ff98181ef78b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lumar"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lumar_auto.yar#L1-L124"
= "N/A"
= "ea178313c43524fd7a7002575f589f09acf9805a9145d8f1811f2c4d6c208d78"
= 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 = { 8d0441 8945f4 e9???????? 8b45b0 83e002 744c 837d0c03 }
$sequence_1 = { 5f 5e 5b 5d c3 2bca 0fb702 }
$sequence_2 = { 663b5dfc 0f8e08010000 83ea01 895518 0f84fc000000 8b4df4 0fbfc3 }
$sequence_3 = { f7d8 1bc0 83c004 ebeb f60210 6a00 }
$sequence_4 = { ffb7e4910000 8d55fc 51 53 6a02 56 8d8fac970000 }
$sequence_5 = { 833c9600 74f9 ff0c96 8344960402 83ef01 79c4 5f }
$sequence_6 = { 8b45ec 663b45fc 0f8e85010000 8b7508 8bce e8???????? }
$sequence_7 = { 81feba499307 7432 81fe0f766ed2 742a }
$sequence_8 = { 3bd0 7209 8bd0 4a }
$sequence_9 = { 6a1b 59 66890d???????? 8d4877 eb52 }
condition:
7 of them and filesize < 81920
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8d0441 8945f4 e9???????? 8b45b0 83e002 744c 837d0c03 } | |
| $sequence_1 | hex | { 5f 5e 5b 5d c3 2bca 0fb702 } | |
| $sequence_2 | hex | { 663b5dfc 0f8e08010000 83ea01 895518 0f84fc000000 8b4df4 0fbfc3 } | |
| $sequence_3 | hex | { f7d8 1bc0 83c004 ebeb f60210 6a00 } | |
| $sequence_4 | hex | { ffb7e4910000 8d55fc 51 53 6a02 56 8d8fac970000 } | |
| $sequence_5 | hex | { 833c9600 74f9 ff0c96 8344960402 83ef01 79c4 5f } | |
| $sequence_6 | hex | { 8b45ec 663b45fc 0f8e85010000 8b7508 8bce e8???????? } | |
| $sequence_7 | hex | { 81feba499307 7432 81fe0f766ed2 742a } | |
| $sequence_8 | hex | { 3bd0 7209 8bd0 4a } | |
| $sequence_9 | hex | { 6a1b 59 66890d???????? 8d4877 eb52 } |
Condition
7 of them and filesize < 81920In plain words (Heuristic)
- The file must be smaller than 81920 (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: e881dc92-d171-5105-bb07-ff98181ef78b
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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