Communicate with malicious code running on your network enabling further access to the endpoint and network, performing software updates on the endpoint, or for taking inventory of infected machines.

Identify if the external domain belongs to a reputable organization or an asset used in a public cloud. Identify if the source of the traffic is malware. If the source of the traffic is a malicious file, Cortex XDR Analytics also raises a malware alert for the file on the endpoint. Malware may contact legitimate domain names, therefore check for unusual apps used or unusual ports or volumes accessed. View all related traffic generated by the suspicious process to understand the purpose. Look for other endpoints on your network that are also contacting the suspicious domain name. Examine file-system operations performed by the process that initiated the traffic and look for potential artifacts on infected endpoints.

• Abnormal Communication to a Rare Domain With a Port Commonly Used by Attack Platforms Low (parent: Informational)
• Abnormal Communication to a Rare Domain to a Suspicious Autonomous System (AS) Informational
• Abnormal Communication to a Rare Domain With a Less Common Port Informational