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177.91.75.131 has a threat confidence score of 86%. This IP address from Brazil (AS263432, CORPORATIVA TELECOMUNICACOES EIRELI ME) has been observed in 11 honeypot sessions targeting SMB protocols. Detected attack patterns include smb remote service stager via mshta. First observed on April 28, 2026, most recently active April 28, 2026.
Composite behavior indicating remote lateral movement over SMB followed by service-based execution of a staged payload delivered through mshta invoking msiexec from remote infrastructure. The sequence combines IPC$ share access, SAMR and SVCCTL RPC binding, service control pipe interaction, and remote command execution consistent with administrative service creation or modification to execute a downloaded installer. This pattern is strongly associated with hands-on-keyboard intrusion activity and automated lateral propagation frameworks leveraging Windows service execution for payload deployment.