YARA · Malpedia signator rules
MALPEDIA_Win_Kikothac_Auto
autogenerated rule brought to you by yara-signator
MalwareKikothacMalpedia 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: Kikothac.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-kikothac-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Kikothac_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "1fa78b73-bb1f-57f6-a8e9-b622d8e0ede4"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.kikothac"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.kikothac_auto.yar#L1-L114"
= "N/A"
= "b02af1756199e51401b4155e33587ee753667afd908709121e8fdd68d090d98d"
= 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 = { 9c 688f9a75da 668910 c60424cd }
$sequence_1 = { 660fb6f2 66c704242554 0fb6f1 9c 894c2420 ff742404 }
$sequence_2 = { 59 59 8b7508 8d34f5e0214100 391e }
$sequence_3 = { 9c 8f442444 9c 89742444 5e 66f7d6 8db3afd65e6a }
$sequence_4 = { 48 9c 40 00749c40 }
$sequence_5 = { 8d34e5363be8b1 8b742458 882c24 66c744240865f2 }
$sequence_6 = { f5 f6d8 9c 28c3 f9 }
$sequence_7 = { 89742424 60 894c2440 660fbef0 660fce }
$sequence_8 = { c64424080e 50 38c6 98 }
$sequence_9 = { 9c 8d64242c e9???????? f6dc 8b4500 d2d6 }
condition:
7 of them and filesize < 581632
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 9c 688f9a75da 668910 c60424cd } | |
| $sequence_1 | hex | { 660fb6f2 66c704242554 0fb6f1 9c 894c2420 ff742404 } | |
| $sequence_2 | hex | { 59 59 8b7508 8d34f5e0214100 391e } | |
| $sequence_3 | hex | { 9c 8f442444 9c 89742444 5e 66f7d6 8db3afd65e6a } | |
| $sequence_4 | hex | { 48 9c 40 00749c40 } | |
| $sequence_5 | hex | { 8d34e5363be8b1 8b742458 882c24 66c744240865f2 } | |
| $sequence_6 | hex | { f5 f6d8 9c 28c3 f9 } | |
| $sequence_7 | hex | { 89742424 60 894c2440 660fbef0 660fce } | |
| $sequence_8 | hex | { c64424080e 50 38c6 98 } | |
| $sequence_9 | hex | { 9c 8d64242c e9???????? f6dc 8b4500 d2d6 } |
Condition
7 of them and filesize < 581632In plain words (Heuristic)
- The file must be smaller than 581632 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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: 1fa78b73-bb1f-57f6-a8e9-b622d8e0ede4
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
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04