UAT-9686 actively targets Cisco Secure Email Gateway and Secure Email and Web
Manager
blog.talosintelligence.com/uat-9686/
Cisco Talos recently discovered a campaign targeting Cisco AsyncOS Software
for Cisco Secure Email Gateway, formerly known as Cisco Email Security
Appliance (ESA), and Cisco Secure Email and Web Manager, formerly known as
Cisco Content Security Management Appliance (SMA).
We assess with moderate confidence that the adversary, who we are tracking as
UAT-9686, is a Chinese-nexus advanced persistent threat (APT) actor whose tool
use and infrastructure are consistent with other Chinese threat groups.
As part of this activity, UAT-9686 deploys a custom persistence mechanism we
track as “AquaShell” accompanied by additional tooling meant for reverse
tunneling and purging logs.
Our analysis indicates that appliances with non-standard configurations, as
described in Cisco’s advisory, are what we have observed as being compromised
by the attack.