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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:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "1378c9fb-61e2-5eb0-9121-77bd373bc04f"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.bootwreck"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.bootwreck_auto.yar#L1-L132"
		license_url = "N/A"
		logic_hash = "7afa6ef33adc76004c8c91f2c6154bc64f62f404c6ab0afbfa8361808ddef3dd"
		score = 75
		quality = 75
		tags = "FILE"
		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"

	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)

IdentifierTypeValueModifiers
$sequence_0hex{ f9 66d3ef 660fcf 0fb738 f8 29db }
$sequence_1hex{ 97 4e 1db48b7a71 f8 8766ad fa 2976a7 }
$sequence_2hex{ 8dac246971318a 8dada1cd3823 66f7d5 5d 689c422a44 9c 60 }
$sequence_3hex{ 9c 8d642428 e9???????? 9c 8d642410 e8???????? 28c3 }
$sequence_4hex{ 60 67b41b 4f b666 6d 5a }
$sequence_5hex{ 397dfc 0f847affffff 0fb6d2 3b55f8 7523 8b8c88380c0000 6a03 }
$sequence_6hex{ 8b742420 9c 8a7c2404 8da9483b0901 66bb2520 890f c644241c95 }
$sequence_7hex{ 5a 3d1eff0e9c 5d 22812152a18e 33dd fa 7599 }
$sequence_8hex{ 88642404 8d64243c e8???????? 80d988 8b4dfc 9c 60 }
$sequence_9hex{ 5a 7df3 293f bd5b0c762c 8400 47 f77e54 }

Condition

7 of them and filesize < 10821632

In 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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

References

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)

Original rule

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

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE