SEKOIA_Gen_Empire_Onedrive_Stager

rule SEKOIA_Gen_Empire_Onedrive_Stager
{
	meta:
		description = "Detects the Empire OneDrive stager"
		author = "Sekoia.io"
		id = "2053416f-1f53-491e-9c70-787a04362d16"
		date = "2022-01-26"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/gen_empire_onedrive_stager.yar#L1-L16"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "90b3548cd3f4f7f936da70ec95dbe0ff3c1421d40a6e8557952d28d358b7c1f1"
		score = 75
		quality = 76
		tags = ""
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$sleep = "Start-Sleep -Seconds $(($PI -as [Int])*2)" wide ascii nocase
		$down = "wc.DownloadData" wide ascii nocase

	condition:
		$down in ( @sleep .. @sleep + 1000 )
}