Vulnerabilities / Threats
10:38 AM

When Antivirus Fails, All Is Not Lost

Following Flame, Stuxnet, and Duqu, even the antivirus industry is questioning its ability to stop targeted attacks. Yet other technologies exist to catch malware in the corporate network.

Starting in late 2011, unknown attackers attempted to install malicious code on a computer belonging to a client of security firm Bit9. The attack, which occurred around 6 a.m. each day, failed because the company's whitelisting technology did not recognize the program as an approved application and blocked its installation.

Only recently was the attack given another name: Flame.

Although Bit9 and its client, which the company would not name but says is based in the Middle East, did not investigate the routine security incidents last year, recent events convinced Bit9 to search through its database of hashes to identify past executables that its technology had blocked. When it found a match, the company--with permission--performed forensics using the client's local database of security events. Bit9 found that a dropper had attempted to install at least two different files on the targeted system.

"Somebody had remotely targeted that system and compromised it enough to try to remotely drop executables on the computer, and we flagged them as unauthorized," says Harry Sverdlove, chief technology officer with Bit9. "It attempted to run. We said no, and that was the end of it."

Following Flame, the most recent targeted attack to hit the headlines, antivirus companies are facing a great deal of criticism for missing signs of the attack for more than four years. Even one of the industry's own, Mikko Hypponen of F-Secure, issued a mea culpa in Wired, saying that the company and its competitors could do better.

"All of us had missed detecting this malware for two years, or more," F-Secure's chief research officer wrote. "That's a spectacular failure for our company, and for the antivirus industry in general."

[ Microsoft issued an emergency patch for all versions of Windows after it discovered the attackers had abused one of its digital certificates to help spread the Flame infection from one machine to others within the targeted organization. See Flame Burns Microsoft With Digital Certificate Hack. ]

Historically, however, antivirus software's strength has been in detecting viruses, worms, and other mass attacks. More recent improvements, such as threat communities and cloud analysis, continue to shorten the delay between detection and the distribution of specific protections. Yet antivirus and anti-malware programs continue to be ill-suited to detect low-volume threats like targeted attacks.

Read the rest of this article on Dark Reading.

Black Hat USA Las Vegas, the premiere conference on information security, features four days of deep technical training followed by two days of presentations from speakers discussing their latest research around a broad range of security topics. At Caesars Palace in Las Vegas, July 21-26. Register today.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Current Issue
E-Commerce Security: What Every Enterprise Needs to Know
The mainstream use of EMV smartcards in the US has experts predicting an increase in online fraud. Organizations will need to look at new tools and processes for building better breach detection and response capabilities.
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
Published: 2015-10-15
The Direct Rendering Manager (DRM) subsystem in the Linux kernel through 4.x mishandles requests for Graphics Execution Manager (GEM) objects, which allows context-dependent attackers to cause a denial of service (memory consumption) via an application that processes graphics data, as demonstrated b...

Published: 2015-10-15
netstat in IBM AIX 5.3, 6.1, and 7.1 and VIOS 2.2.x, when a fibre channel adapter is used, allows local users to gain privileges via unspecified vectors.

Published: 2015-10-15
Cross-site request forgery (CSRF) vulnerability in eXtplorer before 2.1.8 allows remote attackers to hijack the authentication of arbitrary users for requests that execute PHP code.

Published: 2015-10-15
Directory traversal vulnerability in QNAP QTS before 4.1.4 build 0910 and 4.2.x before 4.2.0 RC2 build 0910, when AFP is enabled, allows remote attackers to read or write to arbitrary files by leveraging access to an OS X (1) user or (2) guest account.

Published: 2015-10-15
Cisco Application Policy Infrastructure Controller (APIC) 1.1j allows local users to gain privileges via vectors involving addition of an SSH key, aka Bug ID CSCuw46076.

Dark Reading Radio