DITEKSHEN_MALWARE_Win_Isrstealer

rule DITEKSHEN_MALWARE_Win_Isrstealer : FILE
{
	meta:
		description = "ISRStealer payload"
		author = "ditekSHen"
		id = "d6c3acdd-e881-5f97-8856-b7b60f56a1c2"
		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#L112-L128"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "5dd030ab8122b5dd432168647c7a3465cb3593a326f68b4863a91d16587641e5"
		score = 75
		quality = 75
		tags = "FILE"
		clamav_sig = "MALWARE.Win.Trojan.ISRStealer"

	strings:
		$s1 = "&password=" wide
		$s2 = "&pcname=" wide
		$s3 = "MSVBVM60.DLL" ascii
		$s4 = "MSVBVM60.DLL" wide
		$s5 = "Core Software For : Public" wide
		$s6 = "</Host>" wide
		$s7 = "</Pass>" wide
		$s8 = "/scomma" wide

	condition:
		( uint16( 0 ) == 0x5a4d and filesize < 4000KB and 6 of them ) or all of them
}