Since disclosing the Blue Mockingbird Monero miner back in May, we’ve heard from readers all over the world who recognized the activity on their own systems. These new incidents underscore the opportunistic nature of this threat, as many organizations may not realize that they’re running an application that uses the Telerik UI toolset.
In this video, Red Canary Intelligence Analyst Tony Lambert walks through a detailed detection review of what Blue Mockingbird looks like on enterprise systems, touching on the following:
- Why service accounts are particularly vulnerable to this threat
- Novel persistence methods leveraging COR_PROFILER and Windows Event subscriptions
- A breakdown of the multi-purpose payload
- An outlier incident: we’re still figuring out how this thing works!
EDITOR’S NOTE: The narration at 6:23 incorrectly states that, “Prior to compromise, this [wercplsupport] service start-type should be ‘auto’ instead of ‘manual’.” The slide, however, correctly states that the default start-type configuration is in fact “manual.” The adversary modified the start-type and set it to “auto.”
Our research continues
If you think you’ve seen Blue Mockingbird activity on your own system, or if you have any questions about this threat, get in touch!