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DITEKSHEN_MALWARE_Win_Gobrutloader

Detects GoBrut StealthWorker laoder

MalwareGobrutloaderditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 75

What this rule detects

Detects GoBrut StealthWorker laoder

Associated malware family: Gobrutloader.

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.

malware-win-gobrutloader.yarBSD 2-Clause License
import "pe"

rule DITEKSHEN_MALWARE_Win_Gobrutloader : FILE
{
	meta:
		description = "Detects GoBrut StealthWorker laoder"
		author = "ditekSHen"
		id = "748f8055-71d9-5757-8eb0-90dc3ee35c74"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L8388-L8394"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "6241117cffb147763ace41b36cd1524f48bfc7cb06d56a82d7b30bec9e1baf5b"
		score = 75
		quality = 75
		tags = "FILE"

	condition:
		uint16( 0 ) == 0x5a4d and pe.exports ( "@SetFirstEverVice@8" )
}

Condition

uint16( 0 ) == 0x5a4d and pe.exports ( "@SetFirstEverVice@8" )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • Uses the pe module.
  • Checks exported functions or the DLL name.

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References

Licence & attribution

Author: ditekSHen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

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

Rule id: 748f8055-71d9-5757-8eb0-90dc3ee35c74

Tags:FILE

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