Netskope Threat Labs

SaltWater

ATP Sandbox Adv. HeuristicsAV

SaltWater is a backdoor module for the Barracuda SMTP daemon that can upload and download files, execute commands, and proxy and tunnel traffic. It implements its hooks through a third-party function hooking library, and its design descends from the open source cd00r backdoor concept.

First seen
June 2023
Last seen
October 2026
Alert Name
Gen:Variant.Linux.SaltWater.1
Gen:Variant.Linux.SaltWater.2
Gen:Variant.Trojan.Linux.SaltWater.1
Gen:Variant.Trojan.Linux.SaltWater.2
Linux.Trojan.SaltWater