YARA · CAPE Sandbox (CAPEv2)
CAPE_Koiloader
KoiLoader
- Author
- YungBinary
- Date
- 2024-10-25
- Score / Quality
- 75 / 70
What this rule detects
KoiLoader
Associated malware family: Koiloader.
It defines 1 patterns (0 text, 1 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
koiloader.yarGNU General Public License v3.0
rule CAPE_Koiloader
{
meta:
= "KoiLoader"
= "YungBinary"
= "258e8857-7ea6-5098-9949-06d9d83853d4"
= "2024-10-25"
= "2024-10-25"
= "https://github.com/kevoreilly/CAPEv2"
= "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/data/yara/CAPE/KoiLoader.yar#L1-L35"
= "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/LICENSE"
= "b462e3235c7578450b2b56a8aff875a3d99d22f6970a01db3ba98f7ecb6b01a0"
= "264a536632f8f11c904b00c9d2e505b3263c733ad8fbc2ef19c25a5ad58cef90"
= 75
= 70
= ""
= "KoiLoader Payload"
strings:
$chunk_1 = {
68 27 11 68 05
8B 45 ??
50
E8 ?? ?? ?? ??
83 C4 08
89 45 ??
68 15 B1 B3 09
8B 4D ??
51
E8 ?? ?? ?? ??
83 C4 08
89 45 ??
68 B5 96 AA 0D
8B 55 ??
52
E8 ?? ?? ?? ??
83 C4 08
89 45 ??
6A 00
FF 15 ?? ?? ?? ??
}
condition:
$chunk_1
}
Strings (1 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $chunk_1 | hex | { 68 27 11 68 05 8B 45 ?? 50 E8 ?? ?? ?? ?? 83 C4 08 89 45 ?? 68 15 B1 B3 09 … |
Condition
$chunk_1In plain words (Heuristic)
- Pattern $chunk_1 must be present.
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References
Sample hashes
Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).
- b462e3235c7578450b2b56a8aff875a3d99d22f6970a01db3ba98f7ecb6b01a0
Licence & attribution
Author: YungBinary
Source repository: CAPE Sandbox (CAPEv2) @ 6b15e76f28
Licence: GNU General Public License v3.0 (repository licence)
Copyright notice: Cuckoo Sandbox is copyrighted by the Cuckoo Foundation.
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 258e8857-7ea6-5098-9949-06d9d83853d4
Metadata
| cape_type | KoiLoader Payload |
|---|
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