SEKOIA_Vpn_Mul_Softether

rule SEKOIA_Vpn_Mul_Softether
{
	meta:
		description = "Detect the open-source SoftEther VPN"
		author = "Sekoia.io"
		id = "a1fbf4fe-b934-4a66-b6b1-ebe2f83505cd"
		date = "2024-04-15"
		modified = "2024-12-19"
		reference = "https://www.softether.org/"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/vpn_mul_softether.yar#L1-L29"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "f93e838631518590e518f29557c60a40734da30b62c056f8ebb8febed389551b"
		score = 75
		quality = 80
		tags = ""
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\softether_se%s"
		$ = "GET /vgc_download_dat/ HTTP/1.1"
		$ = "http://x%c.x%c.client.api.vpngate2.jp/api/"
		$ = "http://x0.x0.client.api.vpngate2.jp/check/check.txt"
		$ = "https://x%c.x%c.statistics.api.vpngate2.jp/api/statistics/"
		$ = "Software\\SoftEther Project\\SoftEther VPN\\"
		$ = "|vpnsetup_nosign.exe" wide
		$ = "/ISEASYINSTALLER:%u" wide
		$ = "/CALLERSFXPATH:\"%s\"" wide
		$ = "vpn_client.config" wide
		$ = "vpn_bridge.config" wide
		$ = "|backup_dir_readme.txt" wide
		$ = "vpn_debuginfo_%04u%02u%02u_%02u%02u%02u.zip" wide

	condition:
		8 of them
}