FlawedAmmyy RAT

FlawedAmmyy remote access trojan (RAT) has been created from the leaked source code for version three of Ammyy Admin remote desktop software. FlawedAmmyy can steal files and credentials, install other malware as well as give the attacker use of the many functions of the Ammyy Admin software including:

Threat ID:: CC-2139
Category:
Threat Severity:: Medium
Threat Vector:
Published:: 15 March 2018 12:00 AM

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

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Summary

Affected platforms

The following platforms are known to be affected:

Microsoft Windows

Microsoft Windows – All versions

Threat details

Remote Desktop control
File system manager
Proxy support
Audio Chat

FlawedAmmyy has been spread via spam emails with malicious attachments. At the time of publication, there has been three major spam campaigns. The first and second campaigns used an attachment with malicious macros which would download the malware. The third campaign contains a .zip file which contains .url files. The .url file will download a Javascript over Server Message Block (SMB) protocol, which then downloads Quant Loader. Quant Loader will then download FlawedAmmyy as the final payload.

Threat updates

Date	Update
12 Jun 2018	Threat updates FlawedAmmy is now being distributed by the Necurs botnet, using lure documents containing Excel Web query files

Remediation advice

To prevent and detect a trojan infection, ensure that:

Remediation steps

Type	Step
	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, antivirus and other security products are kept up to date. All day to day computer activities such as email and internet are performed using non-administrative accounts. Strong password policies are in place and password reuse is discouraged. Network, proxy and firewall logs should be monitored for suspicious activity. User accounts accessed from infected machines should be reset on a clean computer.

Type

Step

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, antivirus and other security products are kept up to date.
All day to day computer activities such as email and internet are performed using non-administrative accounts.
Strong password policies are in place and password reuse is discouraged.
Network, proxy and firewall logs should be monitored for suspicious activity.
User accounts accessed from infected machines should be reset on a clean computer.

Last edited: 11 January 2022 11:52 am