Microsoft Security Bulletin MS17-010 was published last March 14, 2017 to address multiple vulnerabilities in Microsoft Server Message Block 1.0 (SMBv1). The most severe of the vulnerabilities could allow remote code execution (RCE).
RCE is used to describe an attacker’s ability to remotely execute any command of choice from one computer to another. An attacker can exploit and possibly take full control of a computer which is vulnerable to RCE.
There are counterpart Trend Micro Relevance Rule patterns for these vulnerabilities to protect against network exploitation. Relevance Rule contains the “network fingerprints” of highly prevalent malware.
|Pattern Name||Related Vulnerability|
|MS17-010-SMB_REMOTE_CODE_EXECUTION_EXPLOIT-3_NC_||Detects generic network traffic related to MS17-010|
Follow these procedures:
Check if result is Logged or Blocked
If the result is ‘Logged’, configure Suspicious Connection Setting and set the action to ‘Block’.
- Log on to the OfficeScan Management Console.
- Go to Agents > Agent Management.
- In the Agent Tree, select the OfficeScan Server/Domain/Computer.
- Go to Settings > Suspicious Connection Settings.
- Set the action to ‘Block’ and then click Apply to All Agents.
Identify the source
For the Relevance Rule Pattern MS17-010-SMB_REMOTE_CODE_EXECUTION_EXPLOIT*, if the traffic direction is ‘Incoming’, the source is the ‘Remote IP’ and vice versa. Thus, on the example above, the source is 192.168.10.144.
Patch and clean the source
- Refer to Microsoft Security Bulletin MS17-010 for the patch corresponding to your Operating System. On the other hand, refer to this checklist to verify if the patch is installed. You can use our Validation Tool to verify if the patch is installed. It also provides the option to disable SMBv1 via registry as a workaround solution.
- Clean the source using ATTK (Anti-threat Toolkit). Refer to the section ‘Clean infected computers’.
- Ensure that the source has anti-malware installed.