tRat Remote Access Trojan

tRat is a newly observed remote access trojan (RAT) that is being distributed by the APT group, TA505. It is believed to be targeting users at commercial banking institutions.

Threat ID:: CC-2793
Category:: Trojan
Threat Severity:: Low
Threat Vector:: Email spam
Published:: 20 November 2018 12:00 AM

Report a cyber attack: call 0300 303 5222 or email [email protected]

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Summary

tRat is a newly observed remote access trojan (RAT) that is being distributed by the APT group, TA505. It is believed to be targeting users at commercial banking institutions.

Affected platforms

The following platforms are known to be affected:

Microsoft Windows

Microsoft Windows - All Versions

Threat details

tRat is being delivered via Microsoft Word and Publisher documents in spam email campaigns. In the most recently observed campaign, distributed by TA505, users received either a spoofed Word or Publisher file stating to enable macros in order to view it. Enabling macros triggers the installation of the RAT. Previous campaigns, not distributed by TA505, have been observed to utilise only Word documents, but using the same process of enabling macros to install the malware.

Once tRat is installed, it will connect to a command and control server over TCP port 80 in order for data encryption and hex-encoded transmission. The RAT is capable of using infected devices to gather information, load additional malware and scan for system vulnerabilities.

Remediation steps

Type	Step
	To prevent and detect a trojan infection, ensure that: A robust program of education and awareness training is delivered to users to ensure they don’t open attachments or follow links within unsolicited emails. All operating systems, anti-virus and other security products are kept up-to-date. Regular anti-virus and security scans are performed on your organisation’s estate. All day-to-day computer activities such as email and internet are performed using non-administrative accounts. Strong password policies are in place. Network, proxy and firewall logs should be monitored for suspicious activity. User accounts accessed from affected devices should be reset on a clean computer. Your organisation adopts a holistic all-round approach to Cyber Security as advocated by the 10 Steps to Cyber Security.

Type

Step

To prevent and detect a trojan infection, ensure that:

A robust program of education and awareness training is delivered to users to ensure they don’t open attachments or follow links within unsolicited emails.
All operating systems, anti-virus and other security products are kept up-to-date.
Regular anti-virus and security scans are performed on your organisation’s estate.
All day-to-day computer activities such as email and internet are performed using non-administrative accounts.
Strong password policies are in place.
Network, proxy and firewall logs should be monitored for suspicious activity.
User accounts accessed from affected devices should be reset on a clean computer.
Your organisation adopts a holistic all-round approach to Cyber Security as advocated by the 10 Steps to Cyber Security.

Last edited: 17 February 2020 12:59 pm