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YARA · CAPE Sandbox (CAPEv2)

CAPE_Bazar

No description has been set in the source file - CAPE

GenericCAPE Sandbox (CAPEv2)GNU General Public License v3.0Compiles with YARA-X
Author
kevoreilly
Date
2021-08-26
Modified
2022-06-09
Score / Quality
75 / 70

What this rule detects

No description has been set in the source file - CAPE

Targets: Windows PE.

It defines 2 patterns (0 text, 2 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
bazar.yarGNU General Public License v3.0
rule CAPE_Bazar : FILE
{
	meta:
		description = "No description has been set in the source file - CAPE"
		author = "kevoreilly"
		id = "e042f180-2a82-5c93-9858-77281557dd10"
		date = "2021-08-26"
		modified = "2022-06-09"
		reference = "https://github.com/kevoreilly/CAPEv2"
		source_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/data/yara/CAPE/Bazar.yar#L1-L11"
		license_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/LICENSE"
		logic_hash = "9375f59b56e47fd0b90b089afdf3be8f16f960038fc625523a2e2d5509ab099d"
		score = 75
		quality = 70
		tags = "FILE"
		cape_type = "Bazar Payload"

	strings:
		$decode = {F7 E9 [0-2] C1 FA 0? 8B C2 C1 E8 1F 03 D0 6B C2 ?? 2B C8}
		$rsa = {C7 00 52 53 41 33 48 8D 48 09 C7 40 04 00 08 00 00 4C 8D 05 [3] 00 C6 40 08 03 B8 09 00 00 00 [0-3] 48 8D 89 80 00 00 00 41 0F 10 00}

	condition:
		uint16( 0 ) == 0x5A4D and 2 of them
}

Strings (2 patterns)

IdentifierTypeValueModifiers
$decodehex{F7 E9 [0-2] C1 FA 0? 8B C2 C1 E8 1F 03 D0 6B C2 ?? 2B C8}
$rsahex{C7 00 52 53 41 33 48 8D 48 09 C7 40 04 00 08 00 00 4C 8D 05 [3] 00 C6 40 08 03 B8 09 00 00 00 [0-3] 48 8D 89 80 00 00 00 41 0F 10 00}

Condition

uint16( 0 ) == 0x5A4D and 2 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • 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: e042f180-2a82-5c93-9858-77281557dd10

Metadata

cape_typeBazar Payload

Tags:FILE

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