Feeds

Zombie tactics threaten to poison honeypots

Hive minds vs bot herders

Choosing a cloud hosting partner with confidence

Innovations in botnet technology threaten the usefulness of honeypots, one of the main ways to study how bot herders control networks of zombie PCs.

Computer scientists led by Cliff Zou and colleagues at the University of Central Florida warn that bot herders can now avoid honeypots - unprotected computers outfitted with monitoring software - set up by security firms.

Ethical concerns mean that security firms do not allow their infrastructure to be used in sending spam or running attacks against victims. By monitoring such instructions it's therefore possible for cybercrooks to program command and control servers to disable or simply ignore these machines, thus depriving security firms of vital intelligence in how zombie botnets are operating in the real world.

Zou and his team are working on techniques to make stealthier honeypot traps to trick bot herders. "Honeypot research and deployment still has significant value for the security community, but we hope this paper will remind honeypot researchers of the importance of studying ways to build covert honeypots, and the limitation in deploying honeypots in security defence," Zou said. "But all that effort will be for naught if honeypots remain as easily detectable as they are presently."

Preliminary findings from the Florida team's research were published in a recent edition of the International Journal of Information and Computer Security, as explained here.

Security and anti-virus firms say that the problem is already on their agenda.

Luis Corrons, PandaLabs technical director at Spanish anti-virus firm Panda Security, explained: "While you can and must filter the traffic generated by the bot inside a honeypot, you can filter and decide what will go out, and what does not. For example, if the bot herder is telling the bot to send spam, you can let the bot receive all the information, and even let him send out the spam messages but redirect them with a proxy to avoid it reaching any victims.

If the bot then contacts the Command and Control server to say the messages have been sent, you can let that info pass through, so the bot herder will think everything works fine.

There are some other ideas the bot herder could take, such as being one of the recipients to check that the spam is really being sent. In this case, there’s little that can be done from our side, as we won’t participate in letting threats spread.

Amichai Shulman, CTO at database security firm Imperva, suggested that rather than monitoring the behaviour of infected machines miscreants could instead attempt to identify virtual machines. "Most honeypot machines are based on a virtualisation platform (most often VMWare). By detecting this attribute of the infected platform, malware developers will probably be able to detect most honeypots out there,” he said.

While conceding that building a honeypot is tricky Shulman suggested a number of approaches designed to camouflage such systems from the eyes of cybercrooks:

Many Honeypot researchers are contemplating on the question of how to impersonate infected behaviour while not taking part in any evil, destructive activity.

I do think however that the problem described by the researchers is much exaggerated. There are many techniques that Honeypot developers employ that would make it very difficult for the malware / botnet to detect honeypot behaviour. Some examples include unlimited outbound communications for a relatively short period of time, deflecting outbound communications to known attack targets, outbound bandwidth control and outbound signature detection.

Most often the time of infection and the time when a recruited zombie becomes maliciously active are far apart, thus there is no need to immediately shutdown any outbound communications of the infected computer upon infection.

®

Internet Security Threat Report 2014

More from The Register

next story
FYI: OS X Yosemite's Spotlight tells Apple EVERYTHING you're looking for
It's on by default – didn't you read the small print?
Russian hackers exploit 'Sandworm' bug 'to spy on NATO, EU PCs'
Fix imminent from Microsoft for Vista, Server 2008, other stuff
Edward who? GCHQ boss dodges Snowden topic during last speech
UK spies would rather 'walk' than do 'mass surveillance'
Microsoft pulls another dodgy patch
Redmond makes a hash of hashing add-on
NOT OK GOOGLE: Android images can conceal code
It's been fixed, but hordes won't have applied the upgrade
Apple grapple: Congress kills FBI's Cupertino crypto kybosh plan
Encryption would lead us all into a 'dark place', claim G-Men
'LulzSec leader Aush0k' found to be naughty boy not worthy of jail
15 months home detention leaves egg on feds' faces as they grab for more power
China is ALREADY spying on Apple iCloud users, claims watchdog
Attack harvests users' info at iPhone 6 launch
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.