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CAPE_Rhadamanthys_1

No description has been set in the source file - CAPE

MalwareRhadamanthysCAPE Sandbox (CAPEv2)GNU General Public License v3.0Compiles with YARA-X
Author
kevoreilly
Date
2023-01-25
Modified
2025-11-11
Score / Quality
75 / 70

What this rule detects

No description has been set in the source file - CAPE

Associated malware family: Rhadamanthys.

It defines 3 patterns (0 text, 3 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

rhadamanthys-1.yarGNU General Public License v3.0
rule CAPE_Rhadamanthys_1
{
	meta:
		description = "No description has been set in the source file - CAPE"
		author = "kevoreilly"
		id = "d9d387e1-76b3-55f6-a40f-a8c9cb9e9bea"
		date = "2023-01-25"
		modified = "2025-11-11"
		reference = "https://github.com/kevoreilly/CAPEv2"
		source_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/analyzer/windows/data/yara/Rhadamanthys.yar#L1-L13"
		license_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/LICENSE"
		logic_hash = "3c8fbfe14f81e099fc900023d9c856e3f45b99af38889ed952b2ac67a636f51d"
		score = 75
		quality = 70
		tags = ""
		cape_options = "bp0=$conf-11,hc0=1,action0=setdump:edx::ebx,bp1=$conf+64,hc1=1,action1=dump,count=0,typestring=Rhadamanthys Config,ntdll-protect=0"
		packed = "9e28586ab70b1abdccfe087d81e326a0703f75e9551ced187d37c51130ad02f5"

	strings:
		$rc4 = {88 4C 01 08 41 81 F9 00 01 00 00 7C F3 89 75 08 33 FF 8B 4D 08 3B 4D 10 72 04 83 65 08 00}
		$code = {8B 4D FC 3B CF 8B C1 74 0D 83 78 04 02 74 1C 8B 40 1C 3B C7 75 F3 3B CF 8B C1 74 57 83 78 04 17 74 09 8B 40 1C 3B C7 75 F3 EB}
		$conf = {46 BB FF 00 00 00 23 F3 0F B6 44 31 08 03 F8 23 FB 0F B6 5C 39 08 88 5C 31 08 88 44 39 08 02 C3 8B 5D 08 0F B6 C0 8A 44 08 08}

	condition:
		2 of them
}

Strings (3 patterns)

IdentifierTypeValueModifiers
$rc4hex{88 4C 01 08 41 81 F9 00 01 00 00 7C F3 89 75 08 33 FF 8B 4D 08 3B 4D 10 72 04 83 65 08 00}
$codehex{8B 4D FC 3B CF 8B C1 74 0D 83 78 04 02 74 1C 8B 40 1C 3B C7 75 F3 3B CF 8B C1 74 57 83 78 04 17 74 09 8B 40 1C 3B C7 75 F3 EB}
$confhex{46 BB FF 00 00 00 23 F3 0F B6 44 31 08 03 F8 23 FB 0F B6 5C 39 08 88 5C 31 08 88 44 39 08 02 C3 8B 5D 08 0F B6 C0 8A 44 08 08}

Condition

2 of them

In plain words (Heuristic)

  • At least 2 patterns in the rule must match.

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References

Licence & attribution

Author: kevoreilly

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.

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: d9d387e1-76b3-55f6-a40f-a8c9cb9e9bea

Metadata

cape_optionsbp0=$conf-11,hc0=1,action0=setdump:edx::ebx,bp1=$conf+64,hc1=1,action1=dump,count=0,typestring=Rhadamanthys Config,ntdll-protect=0
packed9e28586ab70b1abdccfe087d81e326a0703f75e9551ced187d37c51130ad02f5

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