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DITEKSHEN_INDICATOR_KB_Gobuildid_Godownloader

Detects Golang Build IDs in known bad samples

Suspicious / huntingditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2021-01-21
Modified
2024-01-23
Score / Quality
75 / 75

What this rule detects

Detects Golang Build IDs in known bad samples

Targets: Windows PE.

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

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
indicator-kb-gobuildid-godownloader.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_KB_Gobuildid_Godownloader : FILE
{
	meta:
		description = "Detects Golang Build IDs in known bad samples"
		author = "ditekSHen"
		id = "da53c062-4a55-543d-b2b6-52acdf13febc"
		date = "2021-01-21"
		modified = "2024-01-23"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/indicator_knownbad_id.yar#L1612-L1622"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "e0f5ee6ade4608a8b5c5bd02bf5aef0fcb9cb1fe1cc3a9d00b1ace91e5d0d33f"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Go build ID: \"1OzJqWaH4h1VtrLP-zk8/G9w32ha7_ziW1Fa-0Byj/gLtfhbXZ6i_W0e5e_tFF/ekG0n9hOcZjmwzRQnRqC\"" ascii
		$s2 = "Go build ID: \"kKxyj14l4NhGbuhOgzef/ab_yr_pUn6q2idYdoBhn/hFAjO_Yxc_rN6mHFuHM9/SmS3qmOyJBc_4xV_qg3B\"" ascii
		$s3 = "Go build ID: \"MiW7XJnQsBXxlBHro8GW/HMqQknRgJg-mCXomgFRt/88ccKMrfA_s6AcOJs3aM/jSUAU_l3RrMzlV6ANEYE\"" ascii

	condition:
		uint16( 0 ) == 0x5a4d and 1 of them
}

Strings (3 patterns)

IdentifierTypeValueModifiers
$s1text"Go build ID: \"1OzJqWaH4h1VtrLP-zk8/G9w32ha7_ziW1Fa-0Byj/gLtfhbXZ6i_W0e5e_tFF/ekG0n9hOcZjmwzRQnRqC\""ascii
$s2text"Go build ID: \"kKxyj14l4NhGbuhOgzef/ab_yr_pUn6q2idYdoBhn/hFAjO_Yxc_rN6mHFuHM9/SmS3qmOyJBc_4xV_qg3B\""ascii
$s3text"Go build ID: \"MiW7XJnQsBXxlBHro8GW/HMqQknRgJg-mCXomgFRt/88ccKMrfA_s6AcOJs3aM/jSUAU_l3RrMzlV6ANEYE\""ascii

Condition

uint16( 0 ) == 0x5a4d and 1 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 1 patterns in the rule must match.

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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: da53c062-4a55-543d-b2b6-52acdf13febc

Tags:FILE

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