Who is calling? CDRThief targets Linux VoIP softswitches

ESET researchers have discovered and analyzed malware that targets Voice over IP (VoIP) softswitches.

This new malware that we have discovered and named CDRThief is designed to target a very specific VoIP platform, used by two China-produced softswitches (software switches): Linknat VOS2009 and VOS3000. A softswitch is a core element of a VoIP network that provides call control, billing, and management. These softswitches are software-based solutions that run on standard Linux servers.

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