YARA Detection Rule: PUA_VULN_Renamed_Driver_Bsmisys_5962
Repository: Neo23x0/signature-base
Detects: Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - BSMI.sys, BSMIXP64.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]0053004d[PII_REDACTED][PII_REDACTED][PII_REDACTED]72 } /* FileDescription SMIDriver */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8]0031002e0030002e0030002e0033 } /* FileVersion  */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8]0031002e0030002e0030002e0033 } /* ProductVersion  */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8][PII_REDACTED]4d0049002e[PII_REDACTED]73 } /* InternalName BSMIsys */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e0061006d0065[1-8][PII_REDACTED]4d0049002e[PII_REDACTED]73 } /* OriginalFilename BSMIsys */
		$ = { 004c[PII_REDACTED]61006c0043006f[PII_REDACTED][PII_REDACTED]00680074[1-8]0043006f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]420049004f[PII_REDACTED][PII_REDACTED]0043006f[PII_REDACTED]2e[PII_REDACTED][PII_REDACTED] } /* LegalCopyright CopyrightCBIOSTARCorp */

Detection condition:
uint16(0) == 0x5a4d and filesize < 100KB and all of them and not filename matches /BSMI/i and not filename matches /BSMIXP64/i

Full rule:
rule PUA_VULN_Renamed_Driver_Bsmisys_5962 {
	meta:
		description = "Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - BSMI.sys, BSMIXP64.sys"
		author = "Florian Roth"
		reference = "https://github.com/magicsword-io/LOLDrivers"
		hash = "59626cac380d8fe0b80a6d4c4406d62ba0683a2f0f68d50ad506ca1b1cf25347"
		hash = "552f70374715e70c4ade591d65177be2539ec60f751223680dfaccb9e0be0ed9"
		date = "2024-08-07"
		score = 70
		id = "4a492f34-0b28-5663-9247-7aee797e9fbf"
	strings:
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]006f006e[1-8]0053004d[PII_REDACTED][PII_REDACTED][PII_REDACTED]72 } /* FileDescription SMIDriver */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8]0031002e0030002e0030002e0033 } /* FileVersion  */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8]0031002e0030002e0030002e0033 } /* ProductVersion  */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8][PII_REDACTED]4d0049002e[PII_REDACTED]73 } /* InternalName BSMIsys */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e0061006d0065[1-8][PII_REDACTED]4d0049002e[PII_REDACTED]73 } /* OriginalFilename BSMIsys */
		$ = { 004c[PII_REDACTED]61006c0043006f[PII_REDACTED][PII_REDACTED]00680074[1-8]0043006f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]420049004f[PII_REDACTED][PII_REDACTED]0043006f[PII_REDACTED]2e[PII_REDACTED][PII_REDACTED] } /* LegalCopyright CopyrightCBIOSTARCorp */
	condition:
		uint16(0) == 0x5a4d and filesize < 100KB and all of them and not filename matches /BSMI/i and not filename matches /BSMIXP64/i
}