SID 1:1666

Rule Category

INDICATOR-COMPROMISE -- Snort detected a system behavior that suggests the system has been affected by malware. That behavior is known as an Indicator of Compromise (IOC). The symptoms could be a wide range of behaviors, from a suspicious file name to an unusual use of a utility. Symptoms do not guarantee an infection; your network configuration may not be affected by malware, but showing indicators as a result of a normal function. In this case, attackers may be attempting to gain privileges and access other systems, spread influence, and make calls and commands with elevated access. The context of the traffic is important to determine intrusion; traffic from an administration utility performing commands on a user's computer is likely not a compromise, but a user laptop accessing a webserver may indicate intrusion.

Alert Message

INDICATOR-COMPROMISE index of /cgi-bin/ response

Rule Explanation

This event is generated when a webserver returns a directory listing of it's cgi-bin. Impact: Information gathering. Details: This event is generated when a webserver returns a directory listing of it's cgi-bin. The scripts listed may be valuable to an attacker when planning further attacks against the webserver. It may also be possible for the attacker to download the contents of the cgi-bin and view the contents of the script sources. Ease of Attack: Simple. No exploit software required.

What To Look For

No information provided

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Brian Caswell Nigel Houghton