YARA · Malpedia signator rules
MALPEDIA_Win_Kelihos_Auto
autogenerated rule brought to you by yara-signator
MalwareKelihosMalpedia 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: Kelihos.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-kelihos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Kelihos_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "9f37a975-1de8-509e-9e94-af5d7088fe63"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.kelihos"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.kelihos_auto.yar#L1-L134"
= "N/A"
= "6ad522b1069e95a2743782babae88b692ba7271a95223f2203556d0dea66c488"
= 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 = { e8???????? 8bf1 8b4508 8945f0 c745fc01000000 8975ec 8d5c3602 }
$sequence_1 = { c645fc08 e8???????? 68???????? 8d8dd0feffff e8???????? 8d85d0feffff 50 }
$sequence_2 = { e9???????? 68cc000000 b8???????? e8???????? 8d8540ffffff 50 8bf9 }
$sequence_3 = { ff7310 33c0 8d7d08 aa 8bfb 8d75e8 e8???????? }
$sequence_4 = { e8???????? 8db5b8fdffff e8???????? 53 6a01 8d4dbc e8???????? }
$sequence_5 = { ff36 ff7004 ff30 8d45c0 50 e8???????? 8b7508 }
$sequence_6 = { c7400c00f0ffff 833f00 8bce 740d 8bd7 8b0a 83791000 }
$sequence_7 = { c6430801 8d4538 50 b9???????? 8bfb e8???????? 8bd8 }
$sequence_8 = { ffd5 0fb7f0 b803000000 8d4805 8d50ff e8???????? 83ffff }
$sequence_9 = { eb89 5f 5e 5b c9 c20400 55 }
condition:
7 of them and filesize < 4702208
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? 8bf1 8b4508 8945f0 c745fc01000000 8975ec 8d5c3602 } | |
| $sequence_1 | hex | { c645fc08 e8???????? 68???????? 8d8dd0feffff e8???????? 8d85d0feffff 50 } | |
| $sequence_2 | hex | { e9???????? 68cc000000 b8???????? e8???????? 8d8540ffffff 50 8bf9 } | |
| $sequence_3 | hex | { ff7310 33c0 8d7d08 aa 8bfb 8d75e8 e8???????? } | |
| $sequence_4 | hex | { e8???????? 8db5b8fdffff e8???????? 53 6a01 8d4dbc e8???????? } | |
| $sequence_5 | hex | { ff36 ff7004 ff30 8d45c0 50 e8???????? 8b7508 } | |
| $sequence_6 | hex | { c7400c00f0ffff 833f00 8bce 740d 8bd7 8b0a 83791000 } | |
| $sequence_7 | hex | { c6430801 8d4538 50 b9???????? 8bfb e8???????? 8bd8 } | |
| $sequence_8 | hex | { ffd5 0fb7f0 b803000000 8d4805 8d50ff e8???????? 83ffff } | |
| $sequence_9 | hex | { eb89 5f 5e 5b c9 c20400 55 } |
Condition
7 of them and filesize < 4702208In plain words (Heuristic)
- The file must be smaller than 4702208 (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: 9f37a975-1de8-509e-9e94-af5d7088fe63
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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