SEKOIA_Ransomware_Win_Scransom

rule SEKOIA_Ransomware_Win_Scransom : FILE
{
	meta:
		description = "Finds ScRansom samples based on specific strings"
		author = "Sekoia.io"
		id = "ea799295-1332-49c6-9816-035b91fc9b4f"
		date = "2023-08-24"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/ransomware_win_scransom.yar#L1-L31"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "3b8034bc5e0919d6c05dd2f2079c40836f241f2db02c1baf70ecb530db90847f"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$str01 = "TIMATOMAFULL" wide
		$str02 = ".Encrypted" wide
		$str03 = ".Encrypting" wide
		$str04 = "File Name :" wide
		$str05 = "File size :" wide
		$str06 = "TIMATOMA#" wide
		$str07 = "Already Encrypted" wide
		$str08 = "HOW TO RECOVERY FILES.TXT" wide
		$str09 = "%d folder(s) searched and %d file(s) found - %.3f second(s)" wide
		$str10 = "Search cancelled -" wide
		$str11 = "note.txt" wide
		$str12 = "Cannot sort the list while a search is in progress." wide
		$str13 = "Cancelling search, please wait..." wide
		$str14 = "Error showing process list" wide
		$str15 = "[System Process]" wide
		$str16 = "taskkill /f /im" wide
		$str17 = "kill.bat" wide

	condition:
		uint16( 0 ) == 0x5a4d and 15 of them
}