YARA Detection Rule: PUA_VULN_Renamed_Driver_Almicosoftware_Sfdrvxsys_Speedfan_X_AD23
Repository: Neo23x0/signature-base
Detects: Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - sfdrvx32.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][PII_REDACTED][PII_REDACTED]61006e[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]0072 } /* FileDescription SpeedFanxDriver */
		$ = { 0043006f006d[PII_REDACTED]6e0079004e0061006d0065[1-8]0041006c006d[PII_REDACTED]6f[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED]0065 } /* CompanyName AlmicoSoftware */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8][PII_REDACTED]2e[PII_REDACTED]2e00300034 } /* FileVersion X */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8][PII_REDACTED]2e[PII_REDACTED]2e00300034 } /* ProductVersion X */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]32002e[PII_REDACTED]73 } /* InternalName sfdrvxsys */
		$ = {[PII_REDACTED]6f[PII_REDACTED]630074004e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]61006e } /* ProductName SpeedFan */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]32002e[PII_REDACTED]73 } /* OriginalFilename sfdr

Detection condition:
uint16(0) == 0x5a4d and filesize < 100KB and all of them and not filename matches /sfdrvx32/i

Full rule:
rule PUA_VULN_Renamed_Driver_Almicosoftware_Sfdrvxsys_Speedfan_X_AD23 {
	meta:
		description = "Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - sfdrvx32.sys"
		author = "Florian Roth"
		reference = "https://github.com/magicsword-io/LOLDrivers"
		hash = "ad23d77a38655acb71216824e363df8ac41a48a1a0080f35a0d23aa14b54460b"
		date = "2024-08-07"
		score = 70
		id = "fc2c48af-ca7f-5481-b77a-1378df03f8c6"
	strings:
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]006f006e[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]61006e[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]0072 } /* FileDescription SpeedFanxDriver */
		$ = { 0043006f006d[PII_REDACTED]6e0079004e0061006d0065[1-8]0041006c006d[PII_REDACTED]6f[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED]0065 } /* CompanyName AlmicoSoftware */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8][PII_REDACTED]2e[PII_REDACTED]2e00300034 } /* FileVersion X */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8][PII_REDACTED]2e[PII_REDACTED]2e00300034 } /* ProductVersion X */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]32002e[PII_REDACTED]73 } /* InternalName sfdrvxsys */
		$ = {[PII_REDACTED]6f[PII_REDACTED]630074004e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]61006e } /* ProductName SpeedFan */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]32002e[PII_REDACTED]73 } /* OriginalFilename sfdrvxsys */
		$ = { 004c[PII_REDACTED]61006c0043006f[PII_REDACTED][PII_REDACTED]00680074[1-8]0043006f[PII_REDACTED][PII_REDACTED][PII_REDACTED]2000a[PII_REDACTED]06c006d[PII_REDACTED]6f[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]0031002d[PII_REDACTED]310030 } /* LegalCopyright CopyrightAlmicoSoftware */
	condition:
		uint16(0) == 0x5a4d and filesize < 100KB and all of them and not filename matches /sfdrvx32/i
}