YARA · SEKOIA.IO Community

SEKOIA_Apt_Apt33_Tickler

Detects APT33 Tickler malware

APT / threat actorSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X

Author: Sekoia.io
Date: 2024-08-29
Modified: 2024-12-19
Score / Quality: 75 / 80

What this rule detects

Detects APT33 Tickler malware

Targets: Windows PE.

It has no patterns: the condition alone decides (modules, file properties or other rules). YARA modules used: pe, hash.

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

Includes the imports needed to compile it on its own.

apt-apt33-tickler.yarDetection Rule License 1.1

import "pe"
import "hash"

rule SEKOIA_Apt_Apt33_Tickler : FILE
{
	meta:
		description = "Detects APT33 Tickler malware"
		author = "Sekoia.io"
		id = "e9ecf678-350c-47d2-ab4c-522974c70a45"
		date = "2024-08-29"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_apt33_tickler.yar#L4-L19"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		hash = "8bd712b0a49f4fecd39d30ebd121832c"
		hash = "3f29429fce0168748d7cc75e1478aedc"
		logic_hash = "97b858819a1920e6dcdd1a9489754a948de8e6e39b4282e7fe4f6431617a9849"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	condition:
		uint16be( 0 ) == 0x4d5a and ( hash.md5 ( pe.rich_signature.clear_data ) == "2fe65623e6b22577516a4cd051ec3baa" or pe.imphash ( ) == "a5accd1a0d3eaf2c131bc662dd7ff8ea" )
}

Condition

uint16be( 0 ) == 0x4d5a and ( hash.md5 ( pe.rich_signature.clear_data ) == "2fe65623e6b22577516a4cd051ec3baa" or pe.imphash ( ) == "a5accd1a0d3eaf2c131bc662dd7ff8ea" )

In plain words (Heuristic)

The file must start with “MZ” — a Windows executable (PE).
Uses the hash module.
Uses the pe module.
Compares a hash of the file or a part of it.
Checks the PE import hash (imphash).

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References

https://github.com/SEKOIA-IO/Community

Sample hashes

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

8bd712b0a49f4fecd39d30ebd121832c
3f29429fce0168748d7cc75e1478aedc

Licence & attribution

Author: Sekoia.io

Source repository: SEKOIA.IO Community @ a438a5901a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

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

Rule id: e9ecf678-350c-47d2-ab4c-522974c70a45

Metadata

version	1.0
classification	TLP:CLEAR

Tags:FILE

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