YARA · Malpedia signator rules
MALPEDIA_Win_Bootwreck_Auto
autogenerated rule brought to you by yara-signator
MalwareBootwreckMalpedia 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: Bootwreck.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-bootwreck-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Bootwreck_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "1378c9fb-61e2-5eb0-9121-77bd373bc04f"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.bootwreck"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.bootwreck_auto.yar#L1-L132"
= "N/A"
= "7afa6ef33adc76004c8c91f2c6154bc64f62f404c6ab0afbfa8361808ddef3dd"
= 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 = { f9 66d3ef 660fcf 0fb738 f8 29db }
$sequence_1 = { 97 4e 1db48b7a71 f8 8766ad fa 2976a7 }
$sequence_2 = { 8dac246971318a 8dada1cd3823 66f7d5 5d 689c422a44 9c 60 }
$sequence_3 = { 9c 8d642428 e9???????? 9c 8d642410 e8???????? 28c3 }
$sequence_4 = { 60 67b41b 4f b666 6d 5a }
$sequence_5 = { 397dfc 0f847affffff 0fb6d2 3b55f8 7523 8b8c88380c0000 6a03 }
$sequence_6 = { 8b742420 9c 8a7c2404 8da9483b0901 66bb2520 890f c644241c95 }
$sequence_7 = { 5a 3d1eff0e9c 5d 22812152a18e 33dd fa 7599 }
$sequence_8 = { 88642404 8d64243c e8???????? 80d988 8b4dfc 9c 60 }
$sequence_9 = { 5a 7df3 293f bd5b0c762c 8400 47 f77e54 }
condition:
7 of them and filesize < 10821632
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { f9 66d3ef 660fcf 0fb738 f8 29db } | |
| $sequence_1 | hex | { 97 4e 1db48b7a71 f8 8766ad fa 2976a7 } | |
| $sequence_2 | hex | { 8dac246971318a 8dada1cd3823 66f7d5 5d 689c422a44 9c 60 } | |
| $sequence_3 | hex | { 9c 8d642428 e9???????? 9c 8d642410 e8???????? 28c3 } | |
| $sequence_4 | hex | { 60 67b41b 4f b666 6d 5a } | |
| $sequence_5 | hex | { 397dfc 0f847affffff 0fb6d2 3b55f8 7523 8b8c88380c0000 6a03 } | |
| $sequence_6 | hex | { 8b742420 9c 8a7c2404 8da9483b0901 66bb2520 890f c644241c95 } | |
| $sequence_7 | hex | { 5a 3d1eff0e9c 5d 22812152a18e 33dd fa 7599 } | |
| $sequence_8 | hex | { 88642404 8d64243c e8???????? 80d988 8b4dfc 9c 60 } | |
| $sequence_9 | hex | { 5a 7df3 293f bd5b0c762c 8400 47 f77e54 } |
Condition
7 of them and filesize < 10821632In plain words (Heuristic)
- The file must be smaller than 10821632 (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: 1378c9fb-61e2-5eb0-9121-77bd373bc04f
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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