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YARA · ditekSHen detection

DITEKSHEN_MALWARE_Win_Nodachi

Detects Nodachi infostealer

MalwareNodachiditekSHen 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 Nodachi infostealer

Associated malware family: Nodachi.

Targets: Windows PE.

It defines 8 patterns (8 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-nodachi.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Nodachi : FILE
{
	meta:
		description = "Detects Nodachi infostealer"
		author = "ditekSHen"
		id = "bce0c44d-7e75-5c51-ba93-75bd81896921"
		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#L6957-L6972"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "c8a262b862a47d5c0c9bd76b722aa4ceb55dd365b5dca35a61318d8a1c53269d"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$x1 = "//AppData//Roaming//kavachdb//kavach.db" ascii
		$s1 = "/upload/drive/v3/files/{fileId}" ascii
		$s2 = "main.getTokenFromWeb" ascii
		$s3 = "main.tokenFromFile" ascii
		$s4 = "/goLazagne/" ascii
		$s5 = "/extractor/withoutdrive/main.go" ascii
		$s6 = "struct { Hostname string \"json:\\\"hostname\\\"\"; EncryptedUsername string \"json:\\\"encryptedUsername\\\"\"; EncryptedPassword string \"json:\\\"encryptedPassword\\\"\" }" ascii
		$s7 = "C://Users//public//cred.json" ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( ( 1 of ( $x* ) and 3 of ( $s* ) ) or ( 4 of ( $s* ) ) )
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$x1text"//AppData//Roaming//kavachdb//kavach.db"ascii
$s1text"/upload/drive/v3/files/{fileId}"ascii
$s2text"main.getTokenFromWeb"ascii
$s3text"main.tokenFromFile"ascii
$s4text"/goLazagne/"ascii
$s5text"/extractor/withoutdrive/main.go"ascii
$s6text"struct { Hostname string \"json:\\\"hostname\\\"\"; EncryptedUsername string \"json:\\\"encryptedUsername\\\"\"; EncryptedPassword string \"json:\\\"encryptedP …ascii
$s7text"C://Users//public//cred.json"ascii

Condition

uint16( 0 ) == 0x5a4d and ( ( 1 of ( $x* ) and 3 of ( $s* ) ) or ( 4 of ( $s* ) ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 1 patterns in ( $x* ) must match.
  • At least 3 patterns in ( $s* ) must match.
  • At least 4 patterns in ( $s* ) 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: bce0c44d-7e75-5c51-ba93-75bd81896921

Tags:FILE

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