YARA · Malpedia signator rules
MALPEDIA_Win_Badaudio_Auto
autogenerated rule brought to you by yara-signator
MalwareBadaudioMalpedia 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: Badaudio.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-badaudio-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Badaudio_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "f66510e8-a79b-5f39-b71b-ec60a2990bcb"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.badaudio"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.badaudio_auto.yar#L1-L121"
= "N/A"
= "b6858436bb9db6a00abff42fb02bf9495539b4e40b1440eb6da886e953dd1918"
= 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 = { c7417800000000 c7417c0f000000 c6416800 c7818000000000000000 c7819000000000000000 c781940000000f000000 c6818000000000 }
$sequence_1 = { 89d7 c1c70f 8b74840c 89d3 c1c30d }
$sequence_2 = { 89f2 eb17 8902 894204 894208 89c1 eb22 }
$sequence_3 = { 81fa00100000 721c 8b51fc 83c1fc 8955e0 }
$sequence_4 = { 8baea8000000 8b4644 83f810 722c }
$sequence_5 = { 732b 83c023 89d1 50 }
$sequence_6 = { 83c414 5d c3 e8???????? 55 83ec14 8db524ffffff }
$sequence_7 = { c745f001000000 8d4dd4 8d45b8 50 56 }
$sequence_8 = { 30dd 30fd 886c06fa 88cd 00cd c0f907 }
$sequence_9 = { 7218 8b79fc 83c1fc 29f9 83f920 0f83a6010000 83c024 }
condition:
7 of them and filesize < 1420288
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { c7417800000000 c7417c0f000000 c6416800 c7818000000000000000 c7819000000000000000 c781940000000f000000 c6818000000000 } | |
| $sequence_1 | hex | { 89d7 c1c70f 8b74840c 89d3 c1c30d } | |
| $sequence_2 | hex | { 89f2 eb17 8902 894204 894208 89c1 eb22 } | |
| $sequence_3 | hex | { 81fa00100000 721c 8b51fc 83c1fc 8955e0 } | |
| $sequence_4 | hex | { 8baea8000000 8b4644 83f810 722c } | |
| $sequence_5 | hex | { 732b 83c023 89d1 50 } | |
| $sequence_6 | hex | { 83c414 5d c3 e8???????? 55 83ec14 8db524ffffff } | |
| $sequence_7 | hex | { c745f001000000 8d4dd4 8d45b8 50 56 } | |
| $sequence_8 | hex | { 30dd 30fd 886c06fa 88cd 00cd c0f907 } | |
| $sequence_9 | hex | { 7218 8b79fc 83c1fc 29f9 83f920 0f83a6010000 83c024 } |
Condition
7 of them and filesize < 1420288In plain words (Heuristic)
- The file must be smaller than 1420288 (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: f66510e8-a79b-5f39-b71b-ec60a2990bcb
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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