SEKOIA_Apt_Kimsuky_Vbs_Powershell_Downloader

rule SEKOIA_Apt_Kimsuky_Vbs_Powershell_Downloader : FILE
{
	meta:
		description = "Detects VBS/Powershell Downloader used by Kimsuky"
		author = "Sekoia.io"
		id = "4c9af11f-802b-4ffe-9783-90fc2ee53809"
		date = "2022-08-30"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_kimsuky_vbs_powershell_downloader.yar#L1-L18"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "dc24ca206a3122b34be978287f907b12c809f76058fe9355bbd00b3159b0a4d4"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "& WScript.ScriptFullName &" ascii fullword
		$ = "/c schtasks /create /sc minute /mo 5 /tn"
		$ = "pOwErsHeLl -ep bypass -encodedCommand"

	condition:
		filesize < 200KB and 2 of them
}