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DITEKSHEN_INDICATOR_KB_Gobuildid_Gostealer

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-gostealer.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_KB_Gobuildid_Gostealer : FILE
{
	meta:
		description = "Detects Golang Build IDs in known bad samples"
		author = "ditekSHen"
		id = "25c0eb8b-c69c-5f50-b622-daaa3c8c62a4"
		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#L1552-L1562"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "d548bc2580c8e8233a5fcdf85b947547c10f2c4d0056d14e990f30dd7b9a0672"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Go build ID: \"xQV-b1Fr7d576TTTpbXi/gq4FgVQqMcg--9tmY13y/76rKNEUBENlDFDcecmm_/mbw17A_6WrROaNCYDEQF\"" ascii
		$s2 = "Go build ID: \"x4VqrSSsx8iysxVdfB-z/gIF3p7SUxiZsVgTuq7bN/93XHuILGnGYq2L83fRpj/eoY6nTqwk1sdMHTaXzlw\"" ascii
		$s3 = "Go build ID: \"BPRThIYWbHcZQQ4K1y2t/2mO0-FjLC50P0QZuMTgC/9i6TYw_akiEF9ZPN0s3p/s1XoqXr7EyXMDVw5TTP3\"" ascii

	condition:
		uint16( 0 ) == 0x5a4d and filesize < 8000KB and 1 of them
}

Strings (3 patterns)

IdentifierTypeValueModifiers
$s1text"Go build ID: \"xQV-b1Fr7d576TTTpbXi/gq4FgVQqMcg--9tmY13y/76rKNEUBENlDFDcecmm_/mbw17A_6WrROaNCYDEQF\""ascii
$s2text"Go build ID: \"x4VqrSSsx8iysxVdfB-z/gIF3p7SUxiZsVgTuq7bN/93XHuILGnGYq2L83fRpj/eoY6nTqwk1sdMHTaXzlw\""ascii
$s3text"Go build ID: \"BPRThIYWbHcZQQ4K1y2t/2mO0-FjLC50P0QZuMTgC/9i6TYw_akiEF9ZPN0s3p/s1XoqXr7EyXMDVw5TTP3\""ascii

Condition

uint16( 0 ) == 0x5a4d and filesize < 8000KB and 1 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must be smaller than 8000KB (a cheap guard that skips large files).
  • 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: 25c0eb8b-c69c-5f50-b622-daaa3c8c62a4

Tags:FILE

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