YARA · Malpedia signator rules
MALPEDIA_Win_Lowkey_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: Lowkey.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-lowkey-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lowkey_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "19e3bfd0-ab29-5930-b477-5c09b57297cd"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lowkey"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lowkey_auto.yar#L1-L126"
= "N/A"
= "5ef5eed822dc0e0f85f64576919804edb4b07959e4592eb6f0f337b8d69b0b0a"
= 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 = { f20f114c2430 4533c9 41b800080000 488d542450 660f73da08 }
$sequence_1 = { 747e 488b05???????? 4823c2 483b05???????? 756b 488d0574490100 48c74424580f000000 }
$sequence_2 = { 4c8d4c2428 48895c2420 448d4308 895c2428 488d542420 488bcf ff15???????? }
$sequence_3 = { 48895c2458 ff15???????? 48895c2440 4533c9 895c2438 4533c0 }
$sequence_4 = { 488d45e8 48894de8 488945f0 488d15689d0000 }
$sequence_5 = { 4c8d442450 4088740450 488d542438 66896c243d 89442440 e8???????? }
$sequence_6 = { 4c63c7 e8???????? 017e20 8b4620 39461c 0f94c0 884609 }
$sequence_7 = { 488bc2 488bf1 33db bd01000000 48895c2430 4533c9 }
$sequence_8 = { ff15???????? 488b4c2478 ff15???????? 90 33c0 e9???????? 48897c2438 }
$sequence_9 = { 488d4c2470 e8???????? 83caff 488bcb ff15???????? eb17 b866000000 }
condition:
7 of them and filesize < 643072
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { f20f114c2430 4533c9 41b800080000 488d542450 660f73da08 } | |
| $sequence_1 | hex | { 747e 488b05???????? 4823c2 483b05???????? 756b 488d0574490100 48c74424580f000000 } | |
| $sequence_2 | hex | { 4c8d4c2428 48895c2420 448d4308 895c2428 488d542420 488bcf ff15???????? } | |
| $sequence_3 | hex | { 48895c2458 ff15???????? 48895c2440 4533c9 895c2438 4533c0 } | |
| $sequence_4 | hex | { 488d45e8 48894de8 488945f0 488d15689d0000 } | |
| $sequence_5 | hex | { 4c8d442450 4088740450 488d542438 66896c243d 89442440 e8???????? } | |
| $sequence_6 | hex | { 4c63c7 e8???????? 017e20 8b4620 39461c 0f94c0 884609 } | |
| $sequence_7 | hex | { 488bc2 488bf1 33db bd01000000 48895c2430 4533c9 } | |
| $sequence_8 | hex | { ff15???????? 488b4c2478 ff15???????? 90 33c0 e9???????? 48897c2438 } | |
| $sequence_9 | hex | { 488d4c2470 e8???????? 83caff 488bcb ff15???????? eb17 b866000000 } |
Condition
7 of them and filesize < 643072In plain words (Heuristic)
- The file must be smaller than 643072 (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: 19e3bfd0-ab29-5930-b477-5c09b57297cd
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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