DITEKSHEN_MALWARE_Win_Stormkitty

rule DITEKSHEN_MALWARE_Win_Stormkitty : FILE
{
	meta:
		description = "Detects StormKitty infostealer"
		author = "ditekSHen"
		id = "a061a1c0-9ed5-5048-85df-4d7ed6995e92"
		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#L2252-L2269"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "5d139aad6932f177cd14e0356f822ad68ddc659ea4fabd2fd2fbcbc8bad58888"
		score = 75
		quality = 75
		tags = "FILE"
		clamav_sig = "MALWARE.Win.Trojan.StormKitty"

	strings:
		$x1 = "\\ARTIKA\\Videos\\Chrome-Password-Recovery" ascii
		$x2 = "https://github.com/LimerBoy/StormKitty" fullword ascii
		$x3 = "StormKitty" fullword ascii
		$s1 = "GetBSSID" fullword ascii
		$s2 = "GetAntivirus" fullword ascii
		$s3 = "C:\\Users\\Public\\credentials.txt" fullword wide
		$s4 = "^([a-zA-Z0-9_\\-\\.]+)@([a-zA-Z0-9_\\-\\.]+)\\.([a-zA-Z]{2,5})$" fullword wide
		$s5 = "BCrypt.BCryptGetProperty() (get size) failed with status code:{0}" fullword wide
		$s6 = "\"encrypted_key\":\"(.*?)\"" fullword wide

	condition:
		uint16( 0 ) == 0x5a4d and ( 2 of ( $x* ) or 5 of ( $s* ) or ( 3 of ( $s* ) and 1 of ( $x* ) ) )
}