June 26, 2013 By Etay Maor 2 min read

Earlier this week, IBM reported that the Carberp malware source code was on sale in Russian forums. Since then, the source code was leaked and is now available to criminals and researchers alike for free.

The leaked Carberp source code includes an “anti-Rapport” function as well as an old copy of IBM Security Trusteer Rapport’s installer for testing purposes. Over the years, we’ve seen many anti-Rapport modules incorporated into different malware strains. It started back in 2009 with a series of anti-Rapport modules incorporated into Zeus, then a couple of anti-Rapport modules incorporated into SpyEye. It has now been incorporated into different malware strains, including Carberp. In terms of functionality, these modules try to achieve one of three main goals:

  • Prevent Trusteer Rapport from installing on the computer
  • Remove Trusteer Rapport from the computer
  • Avoid one or more of Rapport’s browser protection mechanisms

Over the years, we’ve learned how to effectively fight these attempts with a combination of strong intelligence capabilities, multiple layers of protection and rapid response capabilities.

Just as with previous attempts, Trusteer Rapport protects users from Carberp and is not affected by the anti-Rapport function. This was true before the Carberp source code leak and is still true now.

Learning More About Carberp

IBM intelligence operations collect current threat data from tens of millions of protected endpoints and other sources around the world. Our special response teams track every piece of financial malware 24/7 and can swiftly analyze it and develop countermeasures. By designing an infrastructure that allows for maximum flexibility, Trusteer Rapport can quickly adapt to any change in the threat landscape and shut down cyber criminals’ window of opportunity. As it combats sophisticated financial malware, Trusteer Rapport represents a serious roadblock to malware-based fraud. We take great pride in the fact that criminal groups see us as a threat to their livelihood and are constantly trying to find ways around us. We also remain vigilant and keep enhancing our intelligence capabilities, product functionality and operational processes.

Update: July 25, 2013

A French researcher was able to find a scenario in which our Carberp protection mechanism didn’t kick in. While we believe this is a rare scenario, we activated another layer to protect against it. We would like to thank this researcher for his help and cooperation.

More from Malware

Hive0051’s large scale malicious operations enabled by synchronized multi-channel DNS fluxing

12 min read - For the last year and a half, IBM X-Force has actively monitored the evolution of Hive0051’s malware capabilities. This Russian threat actor has accelerated its development efforts to support expanding operations since the onset of the Ukraine conflict. Recent analysis identified three key changes to capabilities: an improved multi-channel approach to DNS fluxing, obfuscated multi-stage scripts, and the use of fileless PowerShell variants of the Gamma malware. As of October 2023, IBM X-Force has also observed a significant increase in…

New Hive0117 phishing campaign imitates conscription summons to deliver DarkWatchman malware

8 min read - IBM X-Force uncovered a new phishing campaign likely conducted by Hive0117 delivering the fileless malware DarkWatchman, directed at individuals associated with major energy, finance, transport, and software security industries based in Russia, Kazakhstan, Latvia, and Estonia. DarkWatchman malware is capable of keylogging, collecting system information, and deploying secondary payloads. Imitating official correspondence from the Russian government in phishing emails aligns with previous Hive0117 campaigns delivering DarkWatchman malware, and shows a possible significant effort to induce a sense of urgency as…

ITG10 likely targeting South Korean entities of interest to the Democratic People’s Republic of Korea (DPRK)

7 min read - In late April 2023, IBM Security X-Force uncovered documents that are most likely part of a phishing campaign mimicking credible senders, orchestrated by a group X-Force refers to as ITG10, and aimed at delivering RokRAT malware, similar to what has been observed by others. ITG10's tactics, techniques and procedures (TTPs) overlap with APT37 and ScarCruft. The initial delivery method is conducted via a LNK file, which drops two Windows shortcut files containing obfuscated PowerShell scripts in charge of downloading a…

Ransomware renaissance 2023: The definitive guide to stay safer

2 min read - Ransomware is experiencing a renaissance in 2023, with some cybersecurity firms reporting over 400 attacks in the month of March alone. And it shouldn’t be a surprise: the 2023 X-Force Threat Intelligence Index found backdoor deployments — malware providing remote access — as the top attacker action in 2022, and aptly predicted 2022’s backdoor failures would become 2023’s ransomware crisis. Compounding the problem is the industrialization of the cybercrime ecosystem, enabling adversaries to complete more attacks, faster. Over the last…

Topic updates

Get email updates and stay ahead of the latest threats to the security landscape, thought leadership and research.
Subscribe today