YARA · Malpedia signator rules
MALPEDIA_Win_Gaudox_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: Gaudox.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-gaudox-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Gaudox_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "55b8a38f-d0f1-5d6a-9e71-e584348f7b8a"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.gaudox"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.gaudox_auto.yar#L1-L132"
= "N/A"
= "b5d4d602b04c775c96411f3dd647bb34f0110cd50107432ce9277dcb80780beb"
= 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 = { 897dfc 46 3b75f8 76c7 5e 5b 33c0 }
$sequence_1 = { 6a08 6a00 e8???????? 5f 8bc6 }
$sequence_2 = { 6a00 53 52 51 e8???????? 8bc8 46 }
$sequence_3 = { 6a00 8d45dc c745c418000000 8945cc 8d45e4 50 8d45c4 }
$sequence_4 = { 8b400c 83c00c 89442424 8b18 85db 0f84db000000 b90a020000 }
$sequence_5 = { 50 8d442414 50 6a00 6a00 6a32 6a00 }
$sequence_6 = { 8b4508 33ce 897804 5f 8908 8b4dfc 5e }
$sequence_7 = { 6a00 6a00 6a32 6a00 e8???????? 85c0 0f8859020000 }
$sequence_8 = { 8d0c36 8d7804 8908 51 8bcf e8???????? 85ff }
$sequence_9 = { c705????????00000000 e8???????? a3???????? 85c0 0f8466020000 6a50 6a08 }
condition:
7 of them and filesize < 155648
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 897dfc 46 3b75f8 76c7 5e 5b 33c0 } | |
| $sequence_1 | hex | { 6a08 6a00 e8???????? 5f 8bc6 } | |
| $sequence_2 | hex | { 6a00 53 52 51 e8???????? 8bc8 46 } | |
| $sequence_3 | hex | { 6a00 8d45dc c745c418000000 8945cc 8d45e4 50 8d45c4 } | |
| $sequence_4 | hex | { 8b400c 83c00c 89442424 8b18 85db 0f84db000000 b90a020000 } | |
| $sequence_5 | hex | { 50 8d442414 50 6a00 6a00 6a32 6a00 } | |
| $sequence_6 | hex | { 8b4508 33ce 897804 5f 8908 8b4dfc 5e } | |
| $sequence_7 | hex | { 6a00 6a00 6a32 6a00 e8???????? 85c0 0f8859020000 } | |
| $sequence_8 | hex | { 8d0c36 8d7804 8908 51 8bcf e8???????? 85ff } | |
| $sequence_9 | hex | { c705????????00000000 e8???????? a3???????? 85c0 0f8466020000 6a50 6a08 } |
Condition
7 of them and filesize < 155648In plain words (Heuristic)
- The file must be smaller than 155648 (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: 55b8a38f-d0f1-5d6a-9e71-e584348f7b8a
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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