T1102 Web Service
Adversaries may use an existing, legitimate external Web service as a means for relaying data to/from a compromised system. MITRE ATT&CK
3 Sigma rules T1102 on attack.mitre.org
Its sub-techniques
T1102.002Web Service: Bidirectional Communication
Sigma rules tagged with it
mediumCloudflared Tunnel ExecutionJanantha Marasinghe, Nasreddine Bencherchali (Nextron Systems) · Windows