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YARA · CAPE Sandbox (CAPEv2)

CAPE_Pikabotloader

Pikabot Loader

MalwarePikabotCAPE Sandbox (CAPEv2)GNU General Public License v3.0Compiles with YARA-X
Author
kevoreilly
Date
2023-02-13
Modified
2024-03-13
Score / Quality
75 / 70

What this rule detects

Pikabot Loader

Associated malware family: Pikabot.

Targets: Windows PE.

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

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
pikabotloader.yarGNU General Public License v3.0
rule CAPE_Pikabotloader : FILE
{
	meta:
		description = "Pikabot Loader"
		author = "kevoreilly"
		id = "e2c89cdd-0cdb-5367-8aae-2fe685eff972"
		date = "2023-02-13"
		modified = "2024-03-13"
		reference = "https://github.com/kevoreilly/CAPEv2"
		source_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/data/yara/CAPE/PikaBot.yar#L1-L13"
		license_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/LICENSE"
		logic_hash = "7e5f1f2911545ee6bd36b54f2627fbdec1b957f4b91df901dd1c6cbd4dff0231"
		score = 75
		quality = 70
		tags = "FILE"
		cape_type = "PikaBot Loader"

	strings:
		$indirect = {31 C0 64 8B 0D C0 00 00 00 85 C9 74 01 40 50 8D 54 24 ?? E8 [4] A3 [4] 8B 25 [4] A1}
		$sysenter1 = {89 44 24 08 8D 85 ?? FC FF FF C7 44 24 04 FF FF 1F 00 89 04 24 E8}
		$sysenter2 = {C7 44 24 0C 00 00 00 02 C7 44 24 08 00 00 00 02 8B 45 0C 89 44 24 04 8B 45 08 89 04 24 E8}

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

Strings (3 patterns)

IdentifierTypeValueModifiers
$indirecthex{31 C0 64 8B 0D C0 00 00 00 85 C9 74 01 40 50 8D 54 24 ?? E8 [4] A3 [4] 8B 25 [4] A1}
$sysenter1hex{89 44 24 08 8D 85 ?? FC FF FF C7 44 24 04 FF FF 1F 00 89 04 24 E8}
$sysenter2hex{C7 44 24 0C 00 00 00 02 C7 44 24 08 00 00 00 02 8B 45 0C 89 44 24 04 8B 45 08 89 04 24 E8}

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: e2c89cdd-0cdb-5367-8aae-2fe685eff972

Metadata

cape_typePikaBot Loader

Tags:FILE

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