SEKOIA_Hacktool_Fscan_Strings

rule SEKOIA_Hacktool_Fscan_Strings : FILE
{
	meta:
		description = "Detects fscan based on strings"
		author = "Sekoia.io"
		id = "6bef80c3-370c-4168-9d88-3fac88f986b1"
		date = "2023-12-06"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/hacktool_fscan_strings.yar#L1-L23"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "b1c88af2f90921fab4ac32ef65e226a652b8df2915abc62de0a28af9ad59811c"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "Plugins.RdpScan.func1"
		$ = "Plugins.smb1AnonymousConnectIPC.func1"
		$ = "WebScan/WebScan.go"
		$ = "Plugins/CVE-2020-0796.go"
		$ = "Plugins.SshConn.func4"
		$ = "Plugins.PostgresScan"
		$ = "Plugins.(*FCGIClient).Request.func1"

	condition:
		( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a ) and filesize < 30MB and 4 of them
}