Signature Detail
Short Name |
HTTP:UNUSUAL-REFERER1 |
|---|---|
Severity |
Medium |
Recommended |
No |
Category |
HTTP |
Keywords |
Unusual Value In HTTP Referer Header1 |
Release Date |
2015/10/07 |
Update Number |
2543 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+ |
HTTP: Unusual Value In HTTP Referer Header1
This signature detects unusual values for the "Referer" field in an HTTP request. Some malware will hard-code illegal or unusual values in their requests to Command & Control servers, while others will use such headers in their HTTP DDoS requests to victims. The source IP may be infected with a bot and should be investigated.