SID 1:51339

Rule Category

INDICATOR-SCAN -- 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. This alert showed because Snort has detected a tool or script attempting to find objects on the network. This could be as simple as pinging a specific port that WordPress admins commonly use to see if a WordPress-targeted attack might succeed, or it could be as complex as attempting to create a map of the entire network, including ports, services, and devices. Snort scans the signature of this attempt to determine if it is different from the allowed network scanning tools (such as NMAP), and is therefore likely an attack.

Alert Message

INDICATOR-SCAN Trend Micro Threat Discovery Appliance logon.cgi authentication attempt

Rule Explanation

This event is generated when a logon attempt to the Trend Micro Discovery Appliance is observed on the network. Impact: Brute Force Attack Details: Due to weak user and password policies in the Trend Micro Discovery Appliance. An attacker may attempt to logon with no limit to the amount of requests. This allows for a brute force attack or scanning for vulnerable appliances. Ease of Attack:

What To Look For

No information provided

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group