Vulnerabilities / Threats
3/27/2009
04:23 PM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

New Rootkit Attack Hard To Kill

BIOS-based hack demonstrated by Core Security Technologies evades antivirus software

Researchers have come up with a way to create an even stealthier rootkit that survives reboots and evades antivirus software.

Anibal Sacco and Alfredo Ortega, both exploit writers for Core Security Technologies, were able to inject a rootkit into commercial BIOS firmware using their own Python-based tool that installed the rootkit via an update, or flash, process.

This more "persistent" rootkit is more dangerous than a regular rootkit because it could use the BIOS-located network stack to attack other machines, as well as "using normal exploits, without any access to the disk or memory in the operating system," the researchers said.

The concept of BIOS-based rootkits is nothing new in the research community. But Sacco and Ortega took it up a notch with a generic implementation that can work across various operating systems and ultimately give an attacker control of the infected machine. The researchers were able to successfully attack OpenBSD and Windows machines with the BIOS code injection attack.

They also say virtual machines are prone to this attack, as well. BIOS is embedded in the main VM process of VMWare, for instance.

Still, the attack is relatively sophisticated, and the attacker must have administrative rights to the targeted machine before he or she can flash the rootkit to the BIOS.

Such a rootkit is difficult to eradicate, too: Even wiping the hard drive and reinstalling the OS won't get rid of the rootkit, the researchers say. That's because the rootkit runs without a hard disk, and because it runs before any other code on a machine, it could let the attacker deactivate AV software as well, Sacco and Ortega say.

What's the best defense against such an attack? The researchers say it's tough to prevent any attack from an advanced rootkit like this. The best options, they say, are to prevent the flashing of the BIOS by enabling "write" protection on the motherboard, or deploying digitally signed BIOSes, for instance.

Have a comment on this story? Please click "Discuss" below. If you'd like to contact Dark Reading's editors directly, send us a message Kelly Jackson Higgins is Executive Editor at DarkReading.com. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Cartoon
Current Issue
Dark Reading December Tech Digest
Experts weigh in on the pros and cons of end-user security training.
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-4807
Published: 2014-11-22
Sterling Order Management in IBM Sterling Selling and Fulfillment Suite 9.3.0 before FP8 allows remote authenticated users to cause a denial of service (CPU consumption) via a '\0' character.

CVE-2014-6183
Published: 2014-11-22
IBM Security Network Protection 5.1 before 5.1.0.0 FP13, 5.1.1 before 5.1.1.0 FP8, 5.1.2 before 5.1.2.0 FP9, 5.1.2.1 before FP5, 5.2 before 5.2.0.0 FP5, and 5.3 before 5.3.0.0 FP1 on XGS devices allows remote authenticated users to execute arbitrary commands via unspecified vectors.

CVE-2014-5395
Published: 2014-11-21
Multiple cross-site request forgery (CSRF) vulnerabilities in Huawei HiLink E3276 and E3236 TCPU before V200R002B470D13SP00C00 and WebUI before V100R007B100D03SP01C03, E5180s-22 before 21.270.21.00.00, and E586Bs-2 before 21.322.10.00.889 allow remote attackers to hijack the authentication of users ...

CVE-2014-7137
Published: 2014-11-21
Multiple SQL injection vulnerabilities in Dolibarr ERP/CRM before 3.6.1 allow remote authenticated users to execute arbitrary SQL commands via the (1) contactid parameter in an addcontact action, (2) ligne parameter in a swapstatut action, or (3) project_ref parameter to projet/tasks/contact.php; (4...

CVE-2014-7871
Published: 2014-11-21
SQL injection vulnerability in Open-Xchange (OX) AppSuite before 7.4.2-rev36 and 7.6.x before 7.6.0-rev23 allows remote authenticated users to execute arbitrary SQL commands via a crafted jslob API call.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Now that the holiday season is about to begin both online and in stores, will this be yet another season of nonstop gifting to cybercriminals?