DITEKSHEN_MALWARE_Win_Renamer

import "pe"

rule DITEKSHEN_MALWARE_Win_Renamer : FILE
{
	meta:
		description = "Detects Renamer/Tainp variants"
		author = "ditekSHen"
		id = "9e701bbe-d698-510a-b63d-3c1575dac7b0"
		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#L4114-L4135"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "df80657631f072bc1627e1cf503881a2c065396f8798d7f347259672f600198d"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "shell\\open\\command=" fullword wide
		$s2 = "icon=%SystemRoot%\\system32\\SHELL32.dll,4" fullword wide
		$s3 = "DropTarget" ascii
		$s4 = "C:\\Windows\\Paint" fullword wide
		$s5 = "hold.inf" fullword wide
		$s6 = "Dropped" ascii

	condition:
		uint16( 0 ) == 0x5a4d and all of ( $s* ) or ( 4 of ( $s* ) and for any directory in pe.data_directories : ( directory.virtual_address != 0 and directory.size == 0 ) )
}