The Adventures of AntiVirus and the Leaky Sandbox
, CTO and Co-Founder of Safebreach.
Amit Klein, VP Security Research at SafeBreach.
The seminar was broadcast to Haifa from Beer Sheva
Everyone loves cloud-AV. It incorporates up-to-date intelligence from multiple global sources ("wisdom of the clouds"), and (in theory) it has small footprint. There's simply no downside in moving to cloud-AV, right? Consider a high-security enterprise with strict egress filtering, that is - endpoints have no direct Internet connection, or the endpoints' connection to the Internet is restricted to hosts used by their legitimately installed software. Let's say there's malware running on one of the endpoints with all the privileges it needs. This is bad of course, but thankfully, the last line of defense is there - the malware can't really exfiltrate data to the Internet, due to the strict Internet connection policy enforcement.
Now, let's also assume that this enterprise has cloud-enhanced anti-virus (AV) agents installed on its endpoints. You'd think that this can only improve the security of the enterprise. You'd argue that if malware is already running on the endpoint with full privileges, then an AV agent can't degrade the security of the endpoint. And you'd be completely wrong.
In this presentation, we describe and demonstrate a novel technique for exfiltrating data from highly secure enterprises whose endpoints have no direct Internet connection, or whose endpoints' connection to the Internet is restricted to hosts used by their legitimately installed software. Assuming the endpoint has a cloud-enhanced antivirus product installed, we show that if the anti-virus product employs an Internet-connected sandbox in its cloud, it in fact facilitates such exfiltration. We release the tool we developed to implement the exfiltration technique, and we provide real-world results from several prominent AV products. We also provide data and insights on those AV in-the-cloud sandboxes. Finally, we address the issues of how to further enhance the attack, and how can cloud-based AV vendors mitigate it.
Bio: Itzik Kotler is CTO and Co-Founder of SafeBreach. Itzik has more than a decade of experience researching and working in the computer security space. He is a recognized industry speaker, having spoken at DEFCON, Black Hat USA, Hack In The Box, RSA, CCC and H2HC. Prior to founding SafeBreach, Itzik served as CTO at Security-Art, an information security consulting firm, and before that he was SOC Team Leader at Radware.
Bio: Amit Klein is a world renowned information security expert, with 26 years in information security and over 30 published technical papers on this topic. Amit is VP Security Research at SafeBreach, responsible for researching various infiltration, exfiltration and lateral movement attacks. Before SafeBreach, Amit was CTO for Trusteer (acquired by IBM) for 8.5 years. Prior to Trusteer, Amit was chief scientist for Cyota (acquired by RSA) for 2 years, and prior to that, director of Security and Research for Sanctum (acquired by Watchfire, now part of IBM security division) for 7 years. Amit has a B.Sc. from the Hebrew University in Mathematics and Physics (magna cum laude, Talpiot program), recognized by InfoWorld as a CTO of the year 2010 , and has presented at BlackHat USA, HITB, RSA, OWASP, CertConf, BlueHat, CyberTech, APWG and AusCERT.