$sys$drv.exe is a Trojan Backdoor.Ryknos. $sys$drv.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\$sys$drv.exe Adds the value: "$sys$drv" = "$sys$drv.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill $sys$drv.exe process and remove $sys$drv.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.
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