Rootkit: TDLv4

TDL-4 is the fourth generation of the TDL botnet, originated in 2008. The TDL-4 botnet could be used to send out spam, steal individuals data or used for malicious attacks. TDL-4 features an improved algorithm that encrypts communications between infected computers and the botnet's C&C.; TDL-4 al...

Researchers Discover the World's Most Complicated Piece of Malware

Researchers from Kaspersky Labs claim to have discovered the most sophisticated piece of malware available on the Web. Detected by their antivirus product as TDSS, the Trojan employs a number of methods to avoid detection, including the use of encryption between the botnet command and control...

Virus Watch: The Chinese Bootkit

We recently discovered a new bootkit, i.e. a malicious program which infects the hard drive’s boot sector. Kaspersky Lab detects it as Rookit.Win32.Fisp.a. The bootkit is distributed by Trojan-Downloader.NSIS.Agent.jd. The Trojan infects the computers of users who try to download a video clip fro...

TDL4 Rootkit Bypasses Windows Code-Signing Protection

In recent versions of Windows, specifically Vista and Windows 7, Microsoft has introduced a number of new security features designed to prevent malicious code from running. But attackers are continually finding new ways around those protections, and the latest example is a rootkit that can bypass...