Developed by Kaspersky, the Anti-rootkit utility TDSSKiller is a very useful and efficient tool that offers protection against various types of rootkits, especially against malware family Rootkit.Win32.TDSS.
TDSSKiller - Key Features:Computer scanning is done in a very short time, approximate 15 seconds, having two options: scan request or automatically scan.
The weaknesses of this antirootkit utility are: scanning is performed only on areas where infections are likely to be found, so that, certain rootkits can be omitted; and another drawback is that, legitimate files can come out as infected in this case, before deleting something is recommended to google it (and if it's a malware then delete it) or, you can use the quarantine option (and then send the file to the Virus Lab or VirusTotal.com).
The strengths of TDSSKiller: it cleans your system from Rootkit.Boot.SST, thing that even paid antirootkits fails; and it detects and removes known (TDSS, Sinowal, Whistler, Phanta, Trup, Stoned) and unknown rootkits.
Download Kaspersky TDSSKiller