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YARA · ditekSHen detection

DITEKSHEN_MALWARE_Win_Cryptostealergo

CryptoStealerGo payload

MalwareCryptostealergoditekSHen 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

CryptoStealerGo payload

Associated malware family: Cryptostealergo.

Targets: Windows PE.

It defines 9 patterns (9 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-cryptostealergo.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Cryptostealergo : FILE
{
	meta:
		description = "CryptoStealerGo payload"
		author = "ditekSHen"
		id = "83886aeb-af7e-564c-989a-fb7d955814e2"
		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#L676-L692"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "0050be7522e7d89cb9688e63fdca11d24baa74aa858e8c19ee7b4658518536b6"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Go build ID: \"" ascii
		$s2 = "file_upload.go" ascii
		$s3 = "grequests.FileUpload" ascii
		$s4 = "runtime.newproc" ascii
		$s5 = "credit_cards" ascii
		$s6 = "zip.(*fileWriter).Write" ascii
		$s7 = "autofill_" ascii
		$s8 = "XFxVc2VyIERhdGFcXA==" ascii
		$s9 = "XFxBcHBEYXRhXFxMb2NhbFxc" ascii

	condition:
		uint16( 0 ) == 0x5a4d and 8 of them
}

Strings (9 patterns)

IdentifierTypeValueModifiers
$s1text"Go build ID: \""ascii
$s2text"file_upload.go"ascii
$s3text"grequests.FileUpload"ascii
$s4text"runtime.newproc"ascii
$s5text"credit_cards"ascii
$s6text"zip.(*fileWriter).Write"ascii
$s7text"autofill_"ascii
$s8text"XFxVc2VyIERhdGFcXA=="ascii
$s9text"XFxBcHBEYXRhXFxMb2NhbFxc"ascii

Condition

uint16( 0 ) == 0x5a4d and 8 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 8 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: 83886aeb-af7e-564c-989a-fb7d955814e2

Tags:FILE

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