Cyber Criminals Using Odinaff Trojan To Infiltrate Bank Systems

Roland Moore-Colyer,
trojan

Symantec has discovered a trojan capable of hiding in the networks of financial institutions

Cyber criminals are using targeting banks using a trojan dubbed Odinaff, which stealthily defrauds financial institutions by gaining control over their systems and networks.

The trojan was discovered by cyber security firm Symantec, which says it has been in undocumented use since January, likely using its discreet capabilities to remain below the radar of security professionals.

Armed with custom-built malware tools, the trojan has been designed to establish a foothold on a targeted network. Once it has done that, Odinaff can then deploy malware tools to explore the networks, steal credentials and monitor activity. The tools can also wipe infected computers to hide traces of their activity.

Odinaff can also carry another trojan called Batel as part of its payload; Batel creates a backdoor to the command and control server used by the hackers. As Batel deploys malware for in memory use, it can luck in a machine without being easily noticed.

Professional cyber crime

identity deception fraud social engineering security © Pretty much everyone knows that passwords aren't supposed to be shared. Passwords exist to protect your information and your employer's information from being seen by people who shouldn't see it and who could cause serious damage if they do access it. This is why you have a strong password on your banking information (you DO have a strong password on your bank account, don't you?) So how is it that Edward Snowden managed to get the passwords that gave him access to thousands of secret documents? According to a story from Reuters, Snowden did it in the easiest way possible. He asked for it. But of course there's more to it than that. What Snowden did was tell a couple dozen of his coworkers that he needed their passwords because he was a system administrator. Those coworkers, knowing that Snowden was fully cleared, figured it was safe, and gave him the passwords. Snowden used that trust to raid the NSA files of everything he could find. Remote Data Replication: Combat Disasters And Optimize Business Operations Watch It Now Leaving aside the propriety of what Snowden did, the fact that he was able to get the information he did with other people's login information speaks volumes. Perhaps more important, it speaks those volumes directly to you and your employer. Snowden exploited a weakness that exists at nearly every company or organization and which can be overcome only by having the right security policies and the right training. That weakness is trusting the wrong people at the wrong time. The obvious question is how this applies to you and your organization. After all, the chances are pretty good that you're not sitting on a pile of state secrets. But the chances are that your company has plenty of information that has value to your competitors, to criminals, or to people who want to use that information for other dubious purposes. Do you really want the outside world to see your customer list? Your financial statements? Your supply chain or manufacturing details? Probably not. Unfortunately, if you lose control of your organization's passwords, you're doing just that. But you can limit the problem by implementing some basic practices, making sure your staff is trained and then retrained frequently. Here are some things you can do: 1. Require passwords that are hard to guess, but don't go overboard. If you require passwords that are too complex, nobody will remember them. You know what happens next—yellow sticky notes on their monitors. That doesn't really help security. 2. Control what happens if a password is shared. It's easy to say that your staff should never under any circumstances share a password. But that's not how things work in the real world. Sometimes a system administrator really does have a reason to request a user's log-in credentials. 3. When that happens, what should the user do? That depends, but at the least they should know that they should then immediately change the password. You might also want to require that any password-sharing request be reported on a routine, easy-to-fill-out form that will disclose the action to whomever you designate to handle this, such as your IT manager. 4. Make password changes easy to accomplish, and automate the reporting process so that every such change is logged. 5. Don't depend on complex control software as a primary means of user verification. It might be useful, but nothing works as well as good practices properly followed. Remote Data Replication: Combat Disasters And Optimize Business Operations Watch It Now Require two-factor authentication for access to information that's really important. Many companies use a smartcard that doubles as an access card and organizational ID card. This reduces the problem of stolen log-in credentials. More complex methods of access control certainly exist and should be used under extraordinary situations, but are not always appropriate. It's important to remember that maintaining access security requires the willing cooperation of your staff. This means that you have to tell them what needs to be protected, the means they should follow to protect that information and what they should do if they suspect that protection has been compromised, even by someone who claims a plausible reason to do so. Here's one way such a procedure might work: One of your workers with access to something sensitive, such as human resource data, requests help with a problem logging in to the network. Somebody from the help desk asks for the log-in credentials to see what the problem is and to try to fix it. The person being helped provides the information and then immediately sends an email to a designated manager saying something like this: "I provided my log-in info to Sam Smith from the help desk to fix a log-in problem. My extension is 123." Once the log-in problem is solved, the employee should immediately change their password. That change will be recorded by your network management system where it can be verified by a manager or security staffer. Will that eliminate all data loss? Of course not, but it will eliminate some of it. It requires little in the way of resources and it allows management follow-up since problems—including an administrator who seems to be asking for a lot of passwords—will show up quickly. While you can throw automation at such a problem, at some point the most basic answer is training and management. It's hard to be more effective than that unless you already have training and management practices to enforce password discipline in place already. ShutterstockThis stealthy operation was needed as Symantec pointed out that the Odinaff requires a high level of user interaction and control, so it is likely to have been designed by cyber criminals who which to carefully control what the trojan downloads to infiltrate a targeted network so that it does not draw attention to its presence.

The level of effort that involves suggests such attacks come from cyber criminals that have a lot to gain financially of they breach the network of a large bank.

“These attacks require a large amount of hands on involvement, with methodical deployment of a range of lightweight back doors and purpose built tools onto computers of specific interest,” the researchers wrote.

“There appears to be a heavy investment in the coordination, development, deployment, and operation of these tools during the attacks,” the researchers wrote. Although difficult to perform, these kinds of attacks on banks can be highly lucrative.”

Odinaff is set to share digital characteristics with the Carbanak trojan that also targeted targeted large financial institutions, and was used by cyber criminals.

While attacks appear to have happened worldwide, the main areas affected according to Symantec, are the USA and Japan.

Cyber criminals are using increasingly sophisticated malware to get into banks and swipe lucrative data, using all manner of vectors including cloud services such as Google Drive.

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