DDI RULE 4817
March 17, 2023
WINEXE DETECTED - SMB2(REQUEST)
CONFIDENCE LEVEL: HIGH
This is Trend Micro detection for packets passing through SMB2 network protocols that manifests unusual behavior which can be a potential intrusion. Below are some indicators of unusual behavior:
- Suspicious activity in administrator or privileged accounts
- Dubious logins, access, and other network activities that indicate probing or brute force attacks
- Anomalous spike of requests
- Network traffic that traverses in unusually used ports
- Unknown files, applications, and processes in the system
- Unusual traffic going in and out of the network
- Unusual message or file structure
Attack Phase: Lateral Movement
Risk Type: OTHERS
(Note: OTHERS can be network connections related to hacking attempts, exploits, connections done by grayware, or suspicious traffic.)
Threat Type: Suspicious Behavior
Confidence Level: High
DDI Default Rule Status: Enable
Event Class: Callback
Event Sub Class: Hack Tool
APT Related: NO
Network Content Inspection Pattern Version: 1.15219.00
Network Content Inspection Pattern Release Date: 13 Mar 2023
Network Content Correlation Pattern Version: 1.15031.00
Network Content Correlation Pattern Release Date: 13 Mar 2023
- Update your Trend Micro products and pattern files to the latest version.
- Scan the host exhibiting this type of network behavior to clean any detected items.
If scanning fails to detect a malware infection:
- If possible, disconnect the host from the network to prevent any further communication or malicious activities the malware may attempt.
- Run RootkitBuster to check through hidden files, registry entries, processes, drivers, and hooked system services.
- Use the Anti-Threat Toolkit (ATTK) tools to collect undetected malware information.
- Identify and clean threats with Rescue Disk, specific to suspected threats that are persistent or difficult-to-clean. Rescue Disk allows you to use a CD, DVD, or USB drive to examine your computer without launching Microsoft Windows.
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