[ComRAT](https://attack.mitre.org/software/S0126) is a second stage implant suspected of being a descendant of [Agent.btz](https://attack.mitre.org/software/S0092) and used by [Turla](https://attack.mitre.org/groups/G0010). The first version of [ComRAT](https://attack.mitre.org/software/S0126) was identified in 2007, but the tool has undergone substantial development for many years since.(Citation: Symantec Waterbug)(Citation: NorthSec 2015 GData Uroburos Tools)(Citation: ESET ComRAT May 2020)