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MALPEDIA_Win_Killdisk_Auto

autogenerated rule brought to you by yara-signator

MalwareKilldiskMalpedia 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: Killdisk.

It defines 16 patterns (0 text, 16 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-killdisk-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Killdisk_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "01ce24ac-2c12-538b-a3a7-492e0c9469f6"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.killdisk"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.killdisk_auto.yar#L1-L171"
		license_url = "N/A"
		logic_hash = "ac404c07c1133d2b33943d3a9a261a1ec36ead25c1d19408d14c9adf6caf5592"
		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 = { e9???????? 883424 ff742420 8f4500 9c 51 }
		$sequence_1 = { 57 8dbc2444030000 2bc1 8bf1 }
		$sequence_2 = { d1924dbeb698 760a d035???????? d6 d487 ce }
		$sequence_3 = { 8b4c2424 2bc8 894c244c 8b4c2430 2bc8 89542414 }
		$sequence_4 = { 8f44241c c64424148e c644240426 e8???????? 4e e8???????? 54 }
		$sequence_5 = { 7415 b907010000 8d7c2468 f3a5 8b431c }
		$sequence_6 = { 88742408 c70424ba7bbfa4 660fbae408 662dca11 e8???????? 881438 }
		$sequence_7 = { e8???????? 83c40c 6802040000 8d942484020000 6a00 52 }
		$sequence_8 = { 50 51 e8???????? 4e 80fcd7 }
		$sequence_9 = { 28d8 882424 e9???????? 66894500 66897c240c 882c24 }
		$sequence_10 = { 9c 6689742404 8d642450 e9???????? 89442424 }
		$sequence_11 = { 7407 56 ff15???????? 56 ff15???????? 85c0 }
		$sequence_12 = { 8d4c2404 51 b9???????? e8???????? 8bf0 e8???????? }
		$sequence_13 = { 0f8402020000 8b442418 85c0 0f84f6010000 }
		$sequence_14 = { 8b1495a098c201 8d440224 802080 884dfd 8065fd48 }
		$sequence_15 = { e9???????? 9c 9c 66894504 57 60 }

	condition:
		7 of them and filesize < 10817536
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e9???????? 883424 ff742420 8f4500 9c 51 }
$sequence_1hex{ 57 8dbc2444030000 2bc1 8bf1 }
$sequence_2hex{ d1924dbeb698 760a d035???????? d6 d487 ce }
$sequence_3hex{ 8b4c2424 2bc8 894c244c 8b4c2430 2bc8 89542414 }
$sequence_4hex{ 8f44241c c64424148e c644240426 e8???????? 4e e8???????? 54 }
$sequence_5hex{ 7415 b907010000 8d7c2468 f3a5 8b431c }
$sequence_6hex{ 88742408 c70424ba7bbfa4 660fbae408 662dca11 e8???????? 881438 }
$sequence_7hex{ e8???????? 83c40c 6802040000 8d942484020000 6a00 52 }
$sequence_8hex{ 50 51 e8???????? 4e 80fcd7 }
$sequence_9hex{ 28d8 882424 e9???????? 66894500 66897c240c 882c24 }
$sequence_10hex{ 9c 6689742404 8d642450 e9???????? 89442424 }
$sequence_11hex{ 7407 56 ff15???????? 56 ff15???????? 85c0 }
$sequence_12hex{ 8d4c2404 51 b9???????? e8???????? 8bf0 e8???????? }
$sequence_13hex{ 0f8402020000 8b442418 85c0 0f84f6010000 }
$sequence_14hex{ 8b1495a098c201 8d440224 802080 884dfd 8065fd48 }
$sequence_15hex{ e9???????? 9c 9c 66894504 57 60 }

Condition

7 of them and filesize < 10817536

In plain words (Heuristic)

  • The file must be smaller than 10817536 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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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: 01ce24ac-2c12-538b-a3a7-492e0c9469f6

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