YARA Detection Rule: PUA_VULN_Renamed_Driver_Tgsoftsas_Viragtsys_Viritagentsystem_A209
Repository: Neo23x0/signature-base
Detects: Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - viragt.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]670065006e[PII_REDACTED][PII_REDACTED][PII_REDACTED]6d } /* FileDescription VirITAgentSystem */
		$ = { 0043006f006d[PII_REDACTED]6e0079004e0061006d0065[1-8][PII_REDACTED]200053006f[PII_REDACTED]200053002e0061002e0073002e } /* CompanyName TGSoftSas */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8]0031002c[PII_REDACTED]2c[PII_REDACTED]2c00200035 } /* FileVersion  */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8]0031002c[PII_REDACTED]2c[PII_REDACTED]2c00200035 } /* ProductVersion  */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8][PII_REDACTED][PII_REDACTED]0074002e[PII_REDACTED]73 } /* InternalName viragtsys */
		$ = {[PII_REDACTED]6f[PII_REDACTED]630074004e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]670065006e[PII_REDACTED][PII_REDACTED][PII_REDACTED]6d } /* ProductName VirITAgentSystem */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]34002e00730

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

Full rule:
rule PUA_VULN_Renamed_Driver_Tgsoftsas_Viragtsys_Viritagentsystem_A209 {
	meta:
		description = "Detects renamed vulnerable driver mentioned in LOLDrivers project using VersionInfo values from the PE header - viragt.sys"
		author = "Florian Roth"
		reference = "https://github.com/magicsword-io/LOLDrivers"
		hash = "a2096b460e31451659b0dde752264c362f47254c8191930bc921ff16a4311641"
		date = "2024-08-07"
		score = 70
		id = "15fd79ff-e296-5066-882d-c0d679950e60"
	strings:
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]006f006e[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]670065006e[PII_REDACTED][PII_REDACTED][PII_REDACTED]6d } /* FileDescription VirITAgentSystem */
		$ = { 0043006f006d[PII_REDACTED]6e0079004e0061006d0065[1-8][PII_REDACTED]200053006f[PII_REDACTED]200053002e0061002e0073002e } /* CompanyName TGSoftSas */
		$ = {[PII_REDACTED]6c[PII_REDACTED][PII_REDACTED]0069006f006e[1-8]0031002c[PII_REDACTED]2c[PII_REDACTED]2c00200035 } /* FileVersion  */
		$ = {[PII_REDACTED]6f[PII_REDACTED][PII_REDACTED][PII_REDACTED]730069006f006e[1-8]0031002c[PII_REDACTED]2c[PII_REDACTED]2c00200035 } /* ProductVersion  */
		$ = { 0049006e[PII_REDACTED]72006e0061006c004e0061006d0065[1-8][PII_REDACTED][PII_REDACTED]0074002e[PII_REDACTED]73 } /* InternalName viragtsys */
		$ = {[PII_REDACTED]6f[PII_REDACTED]630074004e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]670065006e[PII_REDACTED][PII_REDACTED][PII_REDACTED]6d } /* ProductName VirITAgentSystem */
		$ = { 004f[PII_REDACTED]670069006e0061006c[PII_REDACTED]6c0065006e0061006d0065[1-8][PII_REDACTED][PII_REDACTED][PII_REDACTED]34002e[PII_REDACTED]73 } /* OriginalFilename viragtsys */
		$ = { 004c[PII_REDACTED]61006c0043006f[PII_REDACTED][PII_REDACTED]00680074[1-8]0043006f[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]0053006f[PII_REDACTED]200053002e0061002e0073002e[PII_REDACTED][PII_REDACTED]002c[PII_REDACTED][PII_REDACTED]0020002d[PII_REDACTED]770077002e[PII_REDACTED]73006f[PII_REDACTED]2e00690074 } /* LegalCopyright CopyrightCTGSoftSaswwwtgsoftit */
	condition:
		uint16(0) == 0x5a4d and filesize < 100KB and all of them and not filename matches /viragt/i
}