Mylobot Botnet

Mylobot is a botnet that targets and takes control of devices running Microsoft Windows.

Threat ID:: CC-2505
Category:: Botnet
Threat Severity:: Medium
Threat Vector:: Email spam
Published:: 21 June 2018 12:00 AM

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

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Summary

Mylobot is a botnet that targets and takes control of devices running Microsoft Windows.

Affected platforms

The following platforms are known to be affected:

Microsoft Windows

Microsoft Windows - all versions

Threat details

At the time of publication it is unknown how the threat actors distribute Mylobot, but it is likely to be via spam emails and malicious file downloads.

Mylobot employs a variety of other techniques to evade detection or analysis. When it infects a new host, Mylobot waits for two weeks before contacting Command and Control (C2) servers. It terminates Windows Defender and Windows Update, while attempting to delete other malware which has previously been installed. It can also execute files directly from memory, without them being written to storage media.

Mylobot gives the threat actors full control over infected hosts, and allows them to install additional malware. The C2 servers have been previously linked to the Locky ransomware.

Remediation advice

To prevent and detect an 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, anti-virus 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. 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

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.
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: 11 January 2022 3:40 pm