KEYMARBLE Remote Access Trojan

KEYMARBLE is a remote access trojan created and operated by the HIDDEN COBRA advanced persistent threat group.

Threat ID:: CC-2596
Category:: Trojan
Threat Severity:: Medium
Threat Vector:: Spear phishing, Phishing
Published:: 13 August 2018 12:00 AM

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

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Summary

KEYMARBLE is a remote access trojan created and operated by the HIDDEN COBRA advanced persistent threat group.

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 unclear how KEYMARBLE is distributed, although it is highly probable that HIDDEN COBRA are using the same sophisticated phishing campaigns to deliver it.

Once on a device, KEYMARBLE uses a bespoke cryptographic algorithm to connect to its command and control infrastructure before awaiting further instructions. KEYMARBLE has the following capabilities:

File alteration, deletion and transferal
Shell command execution
Process creation and termination
User, system and device information collection
Registry key creation

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, 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: 17 February 2020 12:46 pm