YARA · CAPE Sandbox (CAPEv2)

CAPE_Icedidpackerb

IcedID export selection

MalwareIcedidCAPE Sandbox (CAPEv2)GNU General Public License v3.0Compiles with YARA-X

Author: kevoreilly
Date: 2021-03-30
Modified: 2023-11-28
Score / Quality: 75 / 70

What this rule detects

IcedID export selection

Associated malware family: Icedid.

Targets: Windows PE.

It defines 3 patterns (1 text, 2 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

icedidpackerb.yarGNU General Public License v3.0

rule CAPE_Icedidpackerb : FILE
{
	meta:
		description = "IcedID export selection"
		author = "kevoreilly"
		id = "6bd0e64d-e60e-5cd2-af79-946a7f6dc9f5"
		date = "2021-03-30"
		modified = "2023-11-28"
		reference = "https://github.com/kevoreilly/CAPEv2"
		source_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/analyzer/windows/data/yara/IcedID.yar#L42-L56"
		license_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/LICENSE"
		hash = "6517ef2c579002ec62ddeb01a3175917c75d79ceca355c415a4462922c715cb6"
		logic_hash = "fde1e2c0124d180b2fa3d0675b35e8d78fdd7b06cd27e9228c148aa29ce30ee7"
		score = 75
		quality = 70
		tags = "FILE"
		cape_options = "export=$export"

	strings:
		$init = "init"
		$export = {44 89 4C 24 20 4C 89 44 24 18 48 89 4C 24 08 41 55 41 56 41 57 48 81 EC ?? 00 00 00 B9 [2] 00 00 4C 8B EA E8}
		$loop = {8B C2 48 8D 49 01 83 E0 07 FF C2 0F B6 44 30 ?? 30 41 FF 3B D5 72}

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

Strings (3 patterns)

Identifier	Type	Value
$init	text	"init"
$export	hex	{44 89 4C 24 20 4C 89 44 24 18 48 89 4C 24 08 41 55 41 56 41 57 48 81 EC ?? 00 00 00 B9 [2] 00 00 4C 8B EA E8}
$loop	hex	{8B C2 48 8D 49 01 83 E0 07 FF C2 0F B6 44 30 ?? 30 41 FF 3B D5 72}

Condition

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

In plain words (Heuristic)

The file must start with “MZ” — a Windows executable (PE).
All patterns in the rule must match.

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References

https://github.com/kevoreilly/CAPEv2

Sample hashes

Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).

6517ef2c579002ec62ddeb01a3175917c75d79ceca355c415a4462922c715cb6

Licence & attribution

Author: kevoreilly

Source repository: CAPE Sandbox (CAPEv2) @ 6b15e76f28

Licence: GNU General Public License v3.0 (repository licence)

Original rule

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

Rule id: 6bd0e64d-e60e-5cd2-af79-946a7f6dc9f5

Metadata

cape_options	export=$export

Tags:FILE

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