Feeds

Zombie tactics threaten to poison honeypots

Hive minds vs bot herders

SANS - Survey on application security programs

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.

®

High performance access to file storage

More from The Register

next story
Obama allows NSA to exploit 0-days: report
If the spooks say they need it, they get it
Putin tells Snowden: Russia conducts no US-style mass surveillance
Gov't is too broke for that, Russian prez says
Snowden-inspired crypto-email service Lavaboom launches
German service pays tribute to Lavabit
Mounties always get their man: Heartbleed 'hacker', 19, CUFFED
Canadian teen accused of raiding tax computers using OpenSSL bug
Heartbleed exploit, inoculation, both released
File under 'this is going to hurt you more than it hurts me'
Arts and crafts store Michaels says 3 million credit cards exposed in breach
Meanwhile, Target investigators prepare for long process in nabbing hackers
Canadian taxman says hundreds pierced by Heartbleed SSL skewer
900 social insurance numbers nicked, says revenue watchman
prev story

Whitepapers

SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.