Wednesday, July 9, 2014

Netiquette IQ Definition of The Day - AVT

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Advanced volatile threat detection: New term, old malware?
Nick Lewis, Enterprise Threats http://searchsecurity.techtarget.com/
Simply put, AVTs are attacks that are only resident in memory and are not written to disk. Memory-based malware is inherently more difficult to detect than other malware; it cannot be identified solely by monitoring the file system. Fortunately, there are many ways to initially detect something that needs to be examined on a system, which will make memory-based malware detection easier. The Windows Incident Response Blog has articles on how to perform memory forensics and malware analysis that could be used to detect an advanced volatile threat.
Once a suspicious network flow or account activity is discovered, an investigation can be done to identify what caused the suspicious activity. Additionally, monitoring for suspicious network connections can be done without access to the compromised system. An enterprise should prepare for an AVT by closely monitoring its systems using anomaly detection techniques and securing its endpoints.
Memory-based malware attacks date back to 2002 if not earlier, and antimalware tools have been addressing the threat of memory-resident malware ever since. So, while the threat is not necessarily new per se, it is still quite volatile because once a system is rebooted, any malware resident only in memory will disappear and requires reinfection of the system to gain access again. Yet reinfection can be easily accomplished if an infected system on the local network has not yet rebooted.
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