YARA · Malpedia signator rules
MALPEDIA_Win_Luca_Stealer_Auto
autogenerated rule brought to you by yara-signator
MalwareLuca StealerMalpedia 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: Luca Stealer.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-luca-stealer-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Luca_Stealer_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "81eb348b-f124-5d26-b1c2-7e3e37f1bf20"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.luca_stealer"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.luca_stealer_auto.yar#L1-L134"
= "N/A"
= "220473227abc72c99d81b0cfabfdcee10a55ec183eac9d22662cf4b5b2976137"
= 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 = { ffca 4889f9 41b805000000 e8???????? 488d0d7f3d2a00 31c0 4883f813 }
$sequence_1 = { e8???????? b900040000 4885c9 7411 488903 48895308 4883c310 }
$sequence_2 = { e8???????? 498bcc 8bd8 e8???????? 448ba42488000000 85db 790e }
$sequence_3 = { e9???????? 48895c2408 4889742410 57 4883ec20 488b5930 488bf9 }
$sequence_4 = { ff15???????? 33f6 48894310 4885c0 0f844e020000 488d4db0 4533c9 }
$sequence_5 = { e9???????? 48898fd0020000 48898fd8020000 388f2c020000 745f 488daf30020000 488bcd }
$sequence_6 = { c1e804 22c3 8887560e0000 f6c110 7406 83e1ef 83c902 }
$sequence_7 = { f348a5 837d0003 4889e9 0f84330e0000 4889ce e8???????? 48c70603000000 }
$sequence_8 = { e8???????? 4885c0 0f85c5210000 488d4c2460 4889da e8???????? 48837c246000 }
$sequence_9 = { 8bd8 488dbeb8020000 740d 834f1002 eb07 488dbeb8020000 85c0 }
condition:
7 of them and filesize < 9285632
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ffca 4889f9 41b805000000 e8???????? 488d0d7f3d2a00 31c0 4883f813 } | |
| $sequence_1 | hex | { e8???????? b900040000 4885c9 7411 488903 48895308 4883c310 } | |
| $sequence_2 | hex | { e8???????? 498bcc 8bd8 e8???????? 448ba42488000000 85db 790e } | |
| $sequence_3 | hex | { e9???????? 48895c2408 4889742410 57 4883ec20 488b5930 488bf9 } | |
| $sequence_4 | hex | { ff15???????? 33f6 48894310 4885c0 0f844e020000 488d4db0 4533c9 } | |
| $sequence_5 | hex | { e9???????? 48898fd0020000 48898fd8020000 388f2c020000 745f 488daf30020000 488bcd } | |
| $sequence_6 | hex | { c1e804 22c3 8887560e0000 f6c110 7406 83e1ef 83c902 } | |
| $sequence_7 | hex | { f348a5 837d0003 4889e9 0f84330e0000 4889ce e8???????? 48c70603000000 } | |
| $sequence_8 | hex | { e8???????? 4885c0 0f85c5210000 488d4c2460 4889da e8???????? 48837c246000 } | |
| $sequence_9 | hex | { 8bd8 488dbeb8020000 740d 834f1002 eb07 488dbeb8020000 85c0 } |
Condition
7 of them and filesize < 9285632In plain words (Heuristic)
- The file must be smaller than 9285632 (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: 81eb348b-f124-5d26-b1c2-7e3e37f1bf20
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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