YARA · ESET malware-ioc

ESET_Apt_Windows_TA410_Flowcloud_Pdb

Matches PDB paths found in TA410 FlowCloud.

APT / threat actorESET malware-iocBSD 2-Clause LicenseCompiles with YARA-X

Author: ESET Research
Date: 2021-10-12
Modified: 2022-04-27
Score / Quality: 75 / 80

What this rule detects

Matches PDB paths found in TA410 FlowCloud.

Targets: Windows PE.

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

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

Includes the imports needed to compile it on its own.

apt-windows-ta410-flowcloud-pdb.yarBSD 2-Clause License

import "pe"

rule ESET_Apt_Windows_TA410_Flowcloud_Pdb : FILE
{
	meta:
		description = "Matches PDB paths found in TA410 FlowCloud."
		author = "ESET Research"
		id = "8bf25768-941e-55c6-bd21-f6b614c9d75d"
		date = "2021-10-12"
		modified = "2022-04-27"
		reference = "https://github.com/eset/malware-ioc/"
		source_url = "https://github.com/eset/malware-ioc/blob/17baf44964a77368e9149f4f593eb098beddf1c5/ta410/ta410.yar#L554-L567"
		license_url = "https://github.com/eset/malware-ioc/blob/17baf44964a77368e9149f4f593eb098beddf1c5/LICENSE"
		logic_hash = "ff95ab0f8e68efe612a6e0d70cebd8bf815d6b5e3877c098ac0761382dc310d6"
		score = 75
		quality = 80
		tags = "FILE"
		license = "BSD 2-Clause"
		version = "1"

	condition:
		uint16( 0 ) == 0x5a4d and ( pe.pdb_path contains "\\FlowCloud\\trunk\\" or pe.pdb_path contains "\\flowcloud\\trunk\\" )
}

Condition

uint16( 0 ) == 0x5a4d and ( pe.pdb_path contains "\\FlowCloud\\trunk\\" or pe.pdb_path contains "\\flowcloud\\trunk\\" )

In plain words (Heuristic)

The file must start with “MZ” — a Windows executable (PE).
Uses the pe module.

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References

https://github.com/eset/malware-ioc/

Licence & attribution

Author: ESET Research

Source repository: ESET malware-ioc @ 17baf44964

Licence: BSD 2-Clause License (stated in the rule's own meta)

“BSD 2-Clause”

Original rule

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

Rule id: 8bf25768-941e-55c6-bd21-f6b614c9d75d

Metadata

version	1

Tags:FILE

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