Squid malformed requests

Malformed web requests are sometimes used for reconnaissance to detect the presence of network security devices. A large number of requests from a single source may indicate compromised hosts. Assumes default squid…

Description

Malformed web requests are sometimes used for reconnaissance to detect the presence of network security devices. A large number of requests from a single source may indicate compromised hosts. Assumes default squid log format.

Detection logic

Detection requirements

Platform: Containers IaaS Linux macOS Network Devices Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: syslog syslogama
Log source service: syslog

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Detection rules

Squid malformed requests

Description

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules