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 - - [28/May/2007:03:06:47 -0600] "GET /phpadsnew/adxmlrpc.php HTTP/1.0" 404 292 "-" "-"
 
   10.10.10.10 - - [28/May/2007:03:06:47 -0600] "GET /phpadsnew/adxmlrpc.php HTTP/1.0" 404 292 "-" "-"
 
   10.10.10.10 - - [28/May/2007:03:06:46 -0600] "GET /phpAdsNew/adxmlrpc.php HTTP/1.0" 404 292 "-" "-"
 
   10.10.10.10 - - [28/May/2007:03:06:46 -0600] "GET /phpAdsNew/adxmlrpc.php HTTP/1.0" 404 292 "-" "-"

Latest revision as of 12:48, 28 May 2007

[edit] 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 "-" "-"
 10.10.10.10 - - [28/May/2007:03:06:46 -0600] "GET /phpAdsNew/adxmlrpc.php HTTP/1.0" 404 292 "-" "-"
 10.10.10.10 - - [28/May/2007:03:06:45 -0600] "GET /adserver/adxmlrpc.php HTTP/1.0" 404 291 "-" "-"
 10.10.10.10 - - [28/May/2007:03:06:46 -0600] "GET /phpAdsNew/adxmlrpc.php HTTP/1.0" 404 292 "-" "-"
 10.10.10.10 - - [28/May/2007:03:06:45 -0600] "GET /adserver/adxmlrpc.php HTTP/1.0" 404 291 "-" "-"
 10.10.10.10 - - [28/May/2007:03:06:44 -0600] "GET /adxmlrpc.php HTTP/1.0" 404 282 "-" "-"


[edit] Recommended Actions:

This attack is being blocked, no further actions are necessary.

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