Okiru - IoT Botnet Malware

A new botnet worm, known as Okiru, has been observed targeting Internet of Things (IoT) devices that use Argonaut RISC Core (ARC) processors. This is believed to be the first malware to target this type of micro-architecture.

Threat ID:: CC-1944
Category:: Botnet, Worm
Threat Severity:: Low
Threat Vector:
Published:: 18 January 2018 12:00 AM

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

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Summary

Threat details

Okiru builds on the Mirai source code, adding a larger set of credentials and an encrypted brute force module. It also has similarities to Satori, another Mirai-based malware.

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, 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. Additionally, ports 37125 and 52869 should be monitored and, if not in use, be disabled. Default credentials and security settings on IoT devices (IP cameras, door sensors, etc) should be altered.

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.

Additionally, ports 37125 and 52869 should be monitored and, if not in use, be disabled. Default credentials and security settings on IoT devices (IP cameras, door sensors, etc) should be altered.

Last edited: 17 February 2020 12:51 pm