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DITEKSHEN_INDICATOR_KB_Gobuildid_Nodachi

Detects Golang Build IDs in Nodachi

Suspicious / huntingNodachiditekSHen 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 Nodachi

Associated malware family: Nodachi.

Targets: Windows PE.

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
indicator-kb-gobuildid-nodachi.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_KB_Gobuildid_Nodachi : FILE
{
	meta:
		description = "Detects Golang Build IDs in Nodachi"
		author = "ditekSHen"
		id = "9d578768-7995-5fb0-8bf1-9c2221cdef80"
		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#L1655-L1666"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "177269623e0f3850c37c6b203d9a637fa92c0ed3fa823cc8d885f28cb383bf7d"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Go build ID: \"3AAyhKK0wFfCYLdz5oRV/zKyiBHCsAEyDIWhaW5AW/Rb8NLT3q8A2OLm6izDGP/8G9k_gjOTX_PXKna_IMj\"" ascii
		$s2 = "Go build ID: \"-eyFd8kbpwxUsutpqZn_/vqzQXX5Ra4qk1XHoqocW/wd-6gLzQKZyEyhVp7qOj/Jr14hyc7pLLgeIZNbfLD\"" ascii
		$s3 = "Go build ID: \"xDSqp4KGmd0SAf5irMGh/-kA7PGjKoJcvCgsZDStn/lHeQ1LQOVyQB2NnwIwFP/-D5oEBc23ND7IGLTESdM\"" ascii
		$s4 = "Go build ID: \"67RcwNspLH__QJrElMcB/zMJf7Go1s0ZoXqd30Lb_/NaJl4rfcuLEG5LeZ-Y4k/MzFNvW79enRRdx3LmA47\"" ascii

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

Strings (4 patterns)

IdentifierTypeValueModifiers
$s1text"Go build ID: \"3AAyhKK0wFfCYLdz5oRV/zKyiBHCsAEyDIWhaW5AW/Rb8NLT3q8A2OLm6izDGP/8G9k_gjOTX_PXKna_IMj\""ascii
$s2text"Go build ID: \"-eyFd8kbpwxUsutpqZn_/vqzQXX5Ra4qk1XHoqocW/wd-6gLzQKZyEyhVp7qOj/Jr14hyc7pLLgeIZNbfLD\""ascii
$s3text"Go build ID: \"xDSqp4KGmd0SAf5irMGh/-kA7PGjKoJcvCgsZDStn/lHeQ1LQOVyQB2NnwIwFP/-D5oEBc23ND7IGLTESdM\""ascii
$s4text"Go build ID: \"67RcwNspLH__QJrElMcB/zMJf7Go1s0ZoXqd30Lb_/NaJl4rfcuLEG5LeZ-Y4k/MzFNvW79enRRdx3LmA47\""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: 9d578768-7995-5fb0-8bf1-9c2221cdef80

Tags:FILE

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