FlawedGrace Remote Access Trojan

First observed in August 2017, FlawedGrace is a modular remote access trojan. Written in C--, it uses several advanced obfuscation techniques to disguise itself on affected devices.

Threat ID:: CC-2882
Category:: Trojan
Threat Severity:: Medium
Threat Vector:: Hacking tool, Email spam, Phishing
Published:: 14 January 2019 12:00 AM

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

Summary

First observed in August 2017, FlawedGrace is a modular remote access trojan. Written in C--, it uses several advanced obfuscation techniques to disguise itself on affected devices.

Affected platforms

The following platforms are known to be affected:

Microsoft Windows

Microsoft Windows - All versions

Threat details

FlawedGrace is primarily distributed via spam or phishing campaigns; but it has also been observed being delivered by several backdoors, including the recently observed ServHelper.

Once installed, FlawedGrace will connect to a command and control server before awaiting further commands. By default, it can download and execute secondary payloads, collect user and system credentials, terminate security and monitoring services or encrypt files. Additional modules can be installed prior to, or after, installation.

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: 14 February 2020 2:50 pm