Memory_1b (mem/xworm-a) Detected. Any Idea what might be the cause?

Several computers have the alert 'Memory_1b (mem/xworm-a)'. It Says Manual malware cleanup required: 'Memory_1b (mem/xworm-a)' at 'c:\Program Files\Sophos\Sophos UI\Sophos UI.exe'.  

The following are the details of the alerts.

Detection type: Behavioral

NameMemory_1b

Pathc:\Windows\System32\cAVS\Intel(R) Audio Service\IntelAudioService.exe

Detection ID0fe0d397ca5f39bf755e44f8368e4b54b8b8b67636f09ec619db28a57fd1e608

Detection type: Behavioral

NameMemory_1b

Pathc:\Program Files\Sophos\Sophos UI\Sophos UI.exe

Detection ID2980258f52d95a9ff115673e76266d77fd5487cd7721f78b028b65ff879e3b8a

Detection type: Behavioral

NameMemory_1b

PathC:\Windows\CCM\SCNotification.exe

Detection ID534607c50f44cd158bd35ffd19a038c1a9a797e912ae970788c57023f236ea90