IIS Targeted by Cryptocurrency Miners

A vulnerability in older versions of Microsoft's Internet Information Services (IIS) web server is being used by attackers to install cryptocurrency miners on vulnerable devices.

Threat ID:: CC-2281
Category:
Threat Severity:: Low
Threat Vector:
Published:: 19 April 2018 12:00 AM

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Summary

A vulnerability in older versions of Microsoft's Internet Information Services (IIS) web server is being used by attackers to install cryptocurrency miners on vulnerable devices.

Threat details

Exploitation of CVE-2014-7269 allows an remote user to send ASCII shellcode to a targeted server. This code can contain an exploit chain which could an allow an attacker to establish a remote shell on the device, at which point the could install the miner. At present both Monero and Electroneum, a little known cryptocurrency, have been seen being mined.

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.

CVE Vulnerabilities

Status

CVE-2014-7269

Last edited: 17 February 2020 12:45 pm