YARA · Malpedia signator rules
MALPEDIA_Win_Lowzero_Auto
autogenerated rule brought to you by yara-signator
MalwareLowzeroMalpedia 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: Lowzero.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-lowzero-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Lowzero_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "459457b1-9851-5959-bfeb-eec17af1cd98"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.lowzero"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.lowzero_auto.yar#L1-L123"
= "N/A"
= "10fd88869d65162b34eb0190a77edf0117a39de65dfd11eed9ccd83e6ab51505"
= 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 = { 47 8a07 8806 46 47 e9???????? }
$sequence_1 = { 03c3 3b450c 0f87ac000000 3b4d08 0f828f000000 83fb09 774e }
$sequence_2 = { 33f6 895dfc 83fa40 7310 6a0d }
$sequence_3 = { c1e208 2bca 49 83fb07 }
$sequence_4 = { 8d0417 8945fc 8d9b00000000 0fb617 47 83fa20 0f83e2000000 }
$sequence_5 = { 5e 5b 8be5 5d c3 894738 }
$sequence_6 = { 47 0fb607 47 2bc8 8d4602 03c3 3b450c }
$sequence_7 = { 47 2bc8 8d4602 03c3 3b450c }
$sequence_8 = { 5d c3 8b4df8 8b55fc 895f04 0fb7441116 c1e80d }
$sequence_9 = { 47 0fb607 47 2bc8 8d4602 }
condition:
7 of them and filesize < 433152
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 47 8a07 8806 46 47 e9???????? } | |
| $sequence_1 | hex | { 03c3 3b450c 0f87ac000000 3b4d08 0f828f000000 83fb09 774e } | |
| $sequence_2 | hex | { 33f6 895dfc 83fa40 7310 6a0d } | |
| $sequence_3 | hex | { c1e208 2bca 49 83fb07 } | |
| $sequence_4 | hex | { 8d0417 8945fc 8d9b00000000 0fb617 47 83fa20 0f83e2000000 } | |
| $sequence_5 | hex | { 5e 5b 8be5 5d c3 894738 } | |
| $sequence_6 | hex | { 47 0fb607 47 2bc8 8d4602 03c3 3b450c } | |
| $sequence_7 | hex | { 47 2bc8 8d4602 03c3 3b450c } | |
| $sequence_8 | hex | { 5d c3 8b4df8 8b55fc 895f04 0fb7441116 c1e80d } | |
| $sequence_9 | hex | { 47 0fb607 47 2bc8 8d4602 } |
Condition
7 of them and filesize < 433152In plain words (Heuristic)
- The file must be smaller than 433152 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 459457b1-9851-5959-bfeb-eec17af1cd98
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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