YARA · Malpedia signator rules
MALPEDIA_Win_Ktlv_Door_Auto
autogenerated rule brought to you by yara-signator
MalwareKtlv DoorMalpedia 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: Ktlv Door.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-ktlv-door-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ktlv_Door_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "b72e81ca-7d5e-5297-bbe9-6aa7902659a6"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.ktlv_door"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ktlv_door_auto.yar#L1-L134"
= "N/A"
= "5ac69720388308c80b5a37adfc511292d61061e883af5a51db60316becc21ed1"
= 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 = { ffd0 488b5c2440 488b442430 488b4c2448 488b6c2458 4883c460 c3 }
$sequence_1 = { 4c8d4301 4901c9 4983f804 0f8ca1feffff 4c89d3 4889d9 488bbc24d8000000 }
$sequence_2 = { eb6a 488d942460010000 4889942460010000 488b8c2470010000 488d7101 488b9c2468010000 488bbc2478010000 }
$sequence_3 = { c3 4889c1 90 e8???????? 90 4889442408 48895c2410 }
$sequence_4 = { 90 e8???????? 48c7400825000000 488d0dbd902a00 488908 488b8c24d0000000 488b9424d8000000 }
$sequence_5 = { e8???????? 488d0574451000 488b9c24e8010000 488b8c24e0010000 488bbc2408010000 e8???????? 48c7400801000000 }
$sequence_6 = { c3 81f9ce80d5ec 7510 488d0dc75e3000 4839c8 7436 6690 }
$sequence_7 = { 4c89ac2440010000 4c89e7 4c89f9 e8???????? 488d05814b1b00 4c89eb e8???????? }
$sequence_8 = { e8???????? 48c7400819000000 488d0d0d502f00 488908 31db 31c9 488d3d8d8e3900 }
$sequence_9 = { e8???????? 488b842488000000 0fb610 488b4c2458 4889cb 48c1e103 4c8b9c24c0000000 }
condition:
7 of them and filesize < 14630912
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ffd0 488b5c2440 488b442430 488b4c2448 488b6c2458 4883c460 c3 } | |
| $sequence_1 | hex | { 4c8d4301 4901c9 4983f804 0f8ca1feffff 4c89d3 4889d9 488bbc24d8000000 } | |
| $sequence_2 | hex | { eb6a 488d942460010000 4889942460010000 488b8c2470010000 488d7101 488b9c2468010000 488bbc2478010000 } | |
| $sequence_3 | hex | { c3 4889c1 90 e8???????? 90 4889442408 48895c2410 } | |
| $sequence_4 | hex | { 90 e8???????? 48c7400825000000 488d0dbd902a00 488908 488b8c24d0000000 488b9424d8000000 } | |
| $sequence_5 | hex | { e8???????? 488d0574451000 488b9c24e8010000 488b8c24e0010000 488bbc2408010000 e8???????? 48c7400801000000 } | |
| $sequence_6 | hex | { c3 81f9ce80d5ec 7510 488d0dc75e3000 4839c8 7436 6690 } | |
| $sequence_7 | hex | { 4c89ac2440010000 4c89e7 4c89f9 e8???????? 488d05814b1b00 4c89eb e8???????? } | |
| $sequence_8 | hex | { e8???????? 48c7400819000000 488d0d0d502f00 488908 31db 31c9 488d3d8d8e3900 } | |
| $sequence_9 | hex | { e8???????? 488b842488000000 0fb610 488b4c2458 4889cb 48c1e103 4c8b9c24c0000000 } |
Condition
7 of them and filesize < 14630912In plain words (Heuristic)
- The file must be smaller than 14630912 (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.
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: b72e81ca-7d5e-5297-bbe9-6aa7902659a6
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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