SEKOIA_Apt_Apt41_Powershell_Exfiltration_Script

rule SEKOIA_Apt_Apt41_Powershell_Exfiltration_Script : FILE
{
	meta:
		description = "Detects PowerShell exfiltration script"
		author = "Sekoia.io"
		id = "9a15f845-c0af-4f1c-a033-b4f40232dc0d"
		date = "2023-11-15"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_apt41_powershell_exfiltration_script.yar#L1-L18"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "0ba4118855d6bd54cbb3a35e3b5fc36484eeb1e742ed3480e6c967b078ec4881"
		score = 75
		quality = 72
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "$UPLOAD_PASSPORT" ascii wide nocase
		$ = "$fileName=$singleFile.Name" ascii wide nocase
		$ = "Upload-Passport" ascii wide nocase
		$ = "$singleFile in $files" ascii wide nocase

	condition:
		filesize < 10KB and all of them
}