MediumSigmaHQ @signalblur +1

HTTP Request to Low Reputation TLD or Suspicious File Extension

Detects HTTP requests to low reputation TLDs (e.g. .xyz, .top, .ru) or ending in suspicious file extensions (.exe, .dll, .hta), which may indicate malicious activity.

Detection logic

Detection requirements

Log source product: zeek
Log source service: http

Known benign triggers

Rare legitimate software downloads from low quality TLDs

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
www.howtogeek.com/137270/50-file-extensions-that-are-potentially-dangerous-on-windows	Unclassified	Only this detection cites it
www.spamhaus.org/reputation-statistics/cctlds/domains/	Unclassified	Only this detection cites it

Detection rules

HTTP Request to Low Reputation TLD or Suspicious File Extension

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules