YARA · Malpedia signator rules
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:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "01ce24ac-2c12-538b-a3a7-492e0c9469f6"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.killdisk"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.killdisk_auto.yar#L1-L171"
= "N/A"
= "ac404c07c1133d2b33943d3a9a261a1ec36ead25c1d19408d14c9adf6caf5592"
= 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 = { 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)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e9???????? 883424 ff742420 8f4500 9c 51 } | |
| $sequence_1 | hex | { 57 8dbc2444030000 2bc1 8bf1 } | |
| $sequence_2 | hex | { d1924dbeb698 760a d035???????? d6 d487 ce } | |
| $sequence_3 | hex | { 8b4c2424 2bc8 894c244c 8b4c2430 2bc8 89542414 } | |
| $sequence_4 | hex | { 8f44241c c64424148e c644240426 e8???????? 4e e8???????? 54 } | |
| $sequence_5 | hex | { 7415 b907010000 8d7c2468 f3a5 8b431c } | |
| $sequence_6 | hex | { 88742408 c70424ba7bbfa4 660fbae408 662dca11 e8???????? 881438 } | |
| $sequence_7 | hex | { e8???????? 83c40c 6802040000 8d942484020000 6a00 52 } | |
| $sequence_8 | hex | { 50 51 e8???????? 4e 80fcd7 } | |
| $sequence_9 | hex | { 28d8 882424 e9???????? 66894500 66897c240c 882c24 } | |
| $sequence_10 | hex | { 9c 6689742404 8d642450 e9???????? 89442424 } | |
| $sequence_11 | hex | { 7407 56 ff15???????? 56 ff15???????? 85c0 } | |
| $sequence_12 | hex | { 8d4c2404 51 b9???????? e8???????? 8bf0 e8???????? } | |
| $sequence_13 | hex | { 0f8402020000 8b442418 85c0 0f84f6010000 } | |
| $sequence_14 | hex | { 8b1495a098c201 8d440224 802080 884dfd 8065fd48 } | |
| $sequence_15 | hex | { e9???????? 9c 9c 66894504 57 60 } |
Condition
7 of them and filesize < 10817536In 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.
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: 01ce24ac-2c12-538b-a3a7-492e0c9469f6
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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