Trojan.TrickBot is Malwarebytes’ detection name for a banking Trojan targeting Windows machines. Trojan.TrickBot is designed to steal credentials from the customers of many large banks and comes in modules accompanied by a configuration file. Each module has a specific task like gaining persistence, propagation, stealing credentials, encryption, and so on. The C&Cs are set up on hacked wireless routers.
Trojan.TrickBot focuses on stealing banking information.
Trojan.TrickBot uses several methods of propagation including exploit kits, email, using infected attachments, as well as embedded URLs, and the Microsoft Windows vulnerability EternalBlue. Trojan.TrickBot is also seen as a secondary infection done by Trojan.Emotet.
Due to the way Emotet uses the EeternalBlue vulnerability to spread through a company’s network, any infected machine on the network will re-infect machines that have been previously cleaned when they rejoin the network. Therefore, IT teams need to isolate, patch, and remediate each infected system one-by-one. This can be a long and painstaking process.
Malwarebytes protects users from Trojan.TrickBot by using real-time protection.
Malwarebytes can detect and remove Trojan.TrickBot on business endpoints without further user interaction. But to be effective on networked machines, you must first follow these steps:
Identifying the infected machines
If you have unprotected endpoints/machines, you can run Farbar Recovery Scan Tool (FRST) to look for possible Indicators of Compromise (IOC). Besides verifying an infection, FRST can also be used to verify removal before bringing an endpoint/machine back into the network.
Disabling Administrative Shares
Windows server shares by default install hidden share folders specifically for administrative access to other machines. The Admin$ shares are used by Emotet once it has brute forced the local administrator password. A file share sever has an IPC$ share that Emotet queries to get a list of all endpoints that connect to it. These AdminIP shares are normally protected via UAC, however, Windows will allow the local administrator through with no prompt.
The most recent Emotet variants use C$ with the Admin credentials to move around and re-infect all the other endpoints.
Repeated re-infections are an indication the worm was able to guess or brute force the administrator password successfully. Please change all local and domain administrator passwords.
It is recommended to disable these Admin$ shares via the registry, as discussed here. If you do not see this registry key, it can be added manually and set up to be disabled.
To remove the Emotet Trojan using Malwarebytes business products, follow the instructions below.
If you have infected machines that are not registered endpoints in Malwarebytes Endpoint Protection, you can remove Emotet with our Breach Remediation tool (MBBR).
For detailed instructions on how to remediate this infection using MBBR or Malwarebytes Endpoint Security (MBES), please have a look at our support document on how to protect your network from Emotet Trojan.
Malwarebytes can detect and remove Trojan.Trickbot without further user interaction.
Trojan Trick bot typically creates a folder under %APPDATA%\Roaming to park its modules: