Difference between revisions of "OSSEC Rule: 31151"
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10.10.10.10 - - [28/May/2007:03:07:12 -0600] "GET /a1b2c3d4e5f6g7h8i9/nonexistentfile.php HTTP/1.0" 404 308 "-" "-" | 10.10.10.10 - - [28/May/2007:03:07:12 -0600] "GET /a1b2c3d4e5f6g7h8i9/nonexistentfile.php HTTP/1.0" 404 308 "-" "-" | ||
10.10.10.10 - - [28/May/2007:03:07:12 -0600] "GET /a1b2c3d4e5f6g7h8i9/nonexistentfile.php HTTP/1.0" 404 308 "-" "-" | 10.10.10.10 - - [28/May/2007:03:07:12 -0600] "GET /a1b2c3d4e5f6g7h8i9/nonexistentfile.php HTTP/1.0" 404 308 "-" "-" | ||
| − | 10.10.10. | + | 10.10.10.10 - - [28/May/2007:03:06:47 -0600] "GET /phpadsnew/adxmlrpc.php HTTP/1.0" 404 292 "-" "-" |
== Recommended Actions: == | == Recommended Actions: == | ||
This attack is being blocked, no further actions are necessary. | This attack is being blocked, no further actions are necessary. | ||
Revision as of 11:45, 28 May 2007
Abstract:
Rule 31151 tracks multiple HTTP error code 400's. These are generally indicative of detecting worm, or generic exploit attacks against the IP address of the server.
Example Alert:
Received From: srv3->/etc/httpd/logs/access_log Rule: 31151 fired (level 10) -> "Mutiple web server 400 error codes from same source ip." Portion of the log(s):
10.10.10.10 - - [28/May/2007:03:07:12 -0600] "GET /a1b2c3d4e5f6g7h8i9/nonexistentfile.php HTTP/1.0" 404 308 "-" "-" 10.10.10.10 - - [28/May/2007:03:07:12 -0600] "GET /a1b2c3d4e5f6g7h8i9/nonexistentfile.php HTTP/1.0" 404 308 "-" "-" 10.10.10.10 - - [28/May/2007:03:06:47 -0600] "GET /phpadsnew/adxmlrpc.php HTTP/1.0" 404 292 "-" "-"
Recommended Actions:
This attack is being blocked, no further actions are necessary.
