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DETECTION OVERVIEW
Risk Factors
Exchanging data between a victim and a command-and-control (C&C) server through an ICMP tunnel is slow and less reliable when compared to other types of C&C tunnels. However, the presence of an ICMP tunnel could indicate a persistent attack. The ultimate objective of a persistent attack, such as data exfiltration, could have a significant impact on a business or organization.
The system might change the risk score for this detection.
Category
Ping is a tool that determines the connectivity of a device with the ICMP protocol. An attacker can establish a C&C tunnel over ICMP to maintain communication with a compromised client on the network. The attacker injects payload that contains arbitrary data, such as malicious code, into the ping packets. The compromised device might respond with another ping payload that contains data.
Legitimate software can verify healthy connections by matching inbound and outbound ping payloads. Unusual or uncommon payloads can cause false positives. Investigate to determine if the ping payload is exchanged with a suspicious external endpoint.
Network analysis and visibility solutions remain underrepresented in enterprises. Find out why in this preview of a new Wave report.
ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response
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