YARA Detection Rule: PUA_VULN_Renamed_Driver_Toshibacorporation_Nchgbiosxsys_Toshibabiospackage_7D4C
Repository: Neo23x0/signature-base
Detects: Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - NCHGBIOS2x64.SYS
Author: Florian Roth
Reference: https://github.com/magicsword-io/LOLDrivers

Pattern signatures:
$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]006f006e[1-8][PII_REDACTED]4f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]6f[PII_REDACTED]570069006e0064006f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]6f006e } /* FileDescription BIOSUpdateDriverForWindowsxEdition */
		$ = { 0043006f006d[PII_REDACTED]6e0079004e0061006d0065[1-8]0054004f[PII_REDACTED][PII_REDACTED][PII_REDACTED]6f[PII_REDACTED]6f[PII_REDACTED]740069006f006e } /* CompanyName TOSHIBACorporation */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8]0034002e0031002e0030002e[PII_REDACTED][PII_REDACTED]006c[PII_REDACTED]620079003a[PII_REDACTED]69006e[PII_REDACTED]4b } /* FileVersion builtbyWinDDK */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8]0034002e0031002e0030002e0030 } /* ProductVersion  */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8]004e[PII_REDACTED][PII_REDACTED]004f[PII_REDACTED][PII_REDACTED]002e[PII_REDACTED]53 } /* InternalName NCHGBIOSxSYS */
		$ = {[PII_REDACTED]6f[PII_REDACTED]630074004e0061006d0065[1-8]0

Detection condition:
uint16(0) == 0x5a4d and filesize < 100KB and all of them and not filename matches /NCHGBIOS2x64/i

Full rule:
rule PUA_VULN_Renamed_Driver_Toshibacorporation_Nchgbiosxsys_Toshibabiospackage_7D4C {
	meta:
		description = "Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - NCHGBIOS2x64.SYS"
		author = "Florian Roth"
		reference = "https://github.com/magicsword-io/LOLDrivers"
		hash = "7d4ca5760b6ad2e4152080e115f040f9d42608d2c7d7f074a579f911d06c8cf8"
		date = "2024-08-07"
		score = 70
		id = "c7a9848a-54cb-5e32-8866-b1583db8ebda"
	strings:
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]006f006e[1-8][PII_REDACTED]4f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]6f[PII_REDACTED]570069006e0064006f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]6f006e } /* FileDescription BIOSUpdateDriverForWindowsxEdition */
		$ = { 0043006f006d[PII_REDACTED]6e0079004e0061006d0065[1-8]0054004f[PII_REDACTED][PII_REDACTED][PII_REDACTED]6f[PII_REDACTED]6f[PII_REDACTED]740069006f006e } /* CompanyName TOSHIBACorporation */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8]0034002e0031002e0030002e[PII_REDACTED][PII_REDACTED]006c[PII_REDACTED]620079003a[PII_REDACTED]69006e[PII_REDACTED]4b } /* FileVersion builtbyWinDDK */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8]0034002e0031002e0030002e0030 } /* ProductVersion  */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8]004e[PII_REDACTED][PII_REDACTED]004f[PII_REDACTED][PII_REDACTED]002e[PII_REDACTED]53 } /* InternalName NCHGBIOSxSYS */
		$ = {[PII_REDACTED]6f[PII_REDACTED]630074004e0061006d0065[1-8]0054004f[PII_REDACTED][PII_REDACTED][PII_REDACTED]49004f[PII_REDACTED][PII_REDACTED]006b[PII_REDACTED]65 } /* ProductName TOSHIBABIOSPackage */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e0061006d0065[1-8]004e[PII_REDACTED][PII_REDACTED]004f[PII_REDACTED][PII_REDACTED]002e[PII_REDACTED]53 } /* OriginalFilename NCHGBIOSxSYS */
		$ = { 004c[PII_REDACTED]61006c0043006f[PII_REDACTED][PII_REDACTED]00680074[1-8]0043006f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]0039002d[PII_REDACTED][PII_REDACTED]0054004f[PII_REDACTED][PII_REDACTED][PII_REDACTED]6f