YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_Irontiger_Getpassword_X64

Iron Tiger Malware - GetPassword x64

MalwareSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X

Author: Cyber Safety Solutions, Trend Micro
Date: 2023-01-06
Modified: 2023-12-05
Score / Quality: 75 / 85

What this rule detects

Iron Tiger Malware - GetPassword x64

Targets: Windows PE.

It defines 7 patterns (7 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

irontiger-getpassword-x64.yarDetection Rule License 1.1

rule SIGNATURE_BASE_Irontiger_Getpassword_X64 : FILE
{
	meta:
		description = "Iron Tiger Malware - GetPassword x64"
		author = "Cyber Safety Solutions, Trend Micro"
		id = "8f55b23f-52fd-5106-9112-6cffa97269ab"
		date = "2023-01-06"
		modified = "2023-12-05"
		reference = "http://goo.gl/T5fSJC"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/apt_irontiger_trendmicro.yar#L101-L119"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "2adabc629fcd4bc89a015874376daf51b2a367bb13ec25e917e5d899080d8a74"
		score = 75
		quality = 85
		tags = "FILE"

	strings:
		$str1 = "(LUID ERROR)" wide ascii
		$str2 = "Users\\K8team\\Desktop\\GetPassword" wide ascii
		$str3 = "Debug x64\\GetPassword.pdb" ascii
		$bla1 = "Authentication Package:" wide ascii
		$bla2 = "Authentication Domain:" wide ascii
		$bla3 = "* Password:" wide ascii
		$bla4 = "Primary User:" wide ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( ( any of ( $str* ) ) or ( all of ( $bla* ) ) )
}

Strings (7 patterns)

Identifier	Type	Value	Modifiers
$str1	text	"(LUID ERROR)"	wide ascii
$str2	text	"Users\\K8team\\Desktop\\GetPassword"	wide ascii
$str3	text	"Debug x64\\GetPassword.pdb"	ascii
$bla1	text	"Authentication Package:"	wide ascii
$bla2	text	"Authentication Domain:"	wide ascii
$bla3	text	"* Password:"	wide ascii
$bla4	text	"Primary User:"	wide ascii

Condition

uint16( 0 ) == 0x5a4d and ( ( any of ( $str* ) ) or ( all of ( $bla* ) ) )

In plain words (Heuristic)

The file must start with “MZ” — a Windows executable (PE).
All patterns in ( $bla* ) must match.
At least one pattern in ( $str* ) must match.

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References

http://goo.gl/T5fSJC

Licence & attribution

Author: Cyber Safety Solutions, Trend Micro

Source repository: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 8f55b23f-52fd-5106-9112-6cffa97269ab

Tags:FILE