YARA Detection Rule: PUA_VULN_Renamed_Driver_Sysinternalswwwsysinternalscom_Procexpsys_Processexplorer_6BFC
Repository: Neo23x0/signature-base
Detects: Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - procexp.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]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]70006c006f[PII_REDACTED]72 } /* FileDescription ProcessExplorer */
		$ = { 0043006f006d[PII_REDACTED]6e0079004e0061006d0065[1-8][PII_REDACTED]730069006e[PII_REDACTED]72006e0061006c[PII_REDACTED]2d[PII_REDACTED]770077002e[PII_REDACTED]730069006e[PII_REDACTED]72006e0061006c0073002e0063006f006d } /* CompanyName Sysinternalswwwsysinternalscom */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8][PII_REDACTED]2e00300030 } /* FileVersion  */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8][PII_REDACTED]2e00300030 } /* ProductVersion  */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8][PII_REDACTED]6f[PII_REDACTED]780070002e[PII_REDACTED]73 } /* InternalName procexpsys */
		$ = {[PII_REDACTED]6f[PII_REDACTED]630074004e0061006d0065[1-8][PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]70006c006f[PII_REDACTED]72 } /* ProductName ProcessExplorer */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e006100

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

Full rule:
rule PUA_VULN_Renamed_Driver_Sysinternalswwwsysinternalscom_Procexpsys_Processexplorer_6BFC {
	meta:
		description = "Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - procexp.Sys"
		author = "Florian Roth"
		reference = "https://github.com/magicsword-io/LOLDrivers"
		hash = "6bfc0f425de9f4e7480aa2d1f2e08892d0553ed0df1c31e9bf3d8d702f38fa2e"
		hash = "3c7e5b25a33a7805c999d318a9523fcae46695a89f55bbdb8bb[PII_REDACTED]dfc"
		hash = "[PII_REDACTED]8bc55438c7c241137af401250f062edef6e7efecf1a6f0f6d0c1f7"
		date = "2024-08-07"
		score = 70
		id = "1078dda3-be3d-57d2-becf-dbe54943e48b"
	strings:
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]006f006e[1-8][PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]70006c006f[PII_REDACTED]72 } /* FileDescription ProcessExplorer */
		$ = { 0043006f006d[PII_REDACTED]6e0079004e0061006d0065[1-8][PII_REDACTED]730069006e[PII_REDACTED]72006e0061006c[PII_REDACTED]2d[PII_REDACTED]770077002e[PII_REDACTED]730069006e[PII_REDACTED]72006e0061006c0073002e0063006f006d } /* CompanyName Sysinternalswwwsysinternalscom */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8][PII_REDACTED]2e00300030 } /* FileVersion  */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8][PII_REDACTED]2e00300030 } /* ProductVersion  */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8][PII_REDACTED]6f[PII_REDACTED]780070002e[PII_REDACTED]73 } /* InternalName procexpsys */
		$ = {[PII_REDACTED]6f[PII_REDACTED]630074004e0061006d0065[1-8][PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]70006c006f[PII_REDACTED]72 } /* ProductName ProcessExplorer */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e0061006d0065[1-8][PII_REDACTED]6f[PII_REDACTED]780070002e[PII_REDACTED]73 } /* OriginalFilename procexpSys */
		$ = { 004c[PII_REDACTED]61006c0043006f[PII_REDACTED][PII_REDACTED]00680074[1-8]0043006f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]4d002e[PII_REDACTED][PII_REDACTED]0069006e006f[PII_REDACTED][PII_REDACTED][PII_REDACTED]390036002d[PII_REDACTED]310031 } /* LegalCopyright CopyrightCMRussi