Description of Campaign
Threat actors are exploiting a vulnerability in MSSQL server to execute remote code on the affected machine. Once successful, a malicious VBS file is executed by sql.exe, and executing the script performs system checks to verify the operating system version and proceeds to download an appropriate payload for the OS architecture. Multiple scripts and native Windows binaries are utilized to get to the final payload, which is the installation and assimilation of the infected device into the Kingminer botnet for cryptocurrency mining.

Our Threat Research team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by Trend Micro and shared publicly.

How to use this article:

1. If a Threat Hunting table has been created, use the rules contained to search for malware related to this campaign. 
2. Review the product detection table and confirm that your environment is at least on the specified content version.
   To download the latest content versions, go to the Security Updates page.
3. Scroll down and review the "Product Countermeasures" section of this article. Consider implementing them if they are not already in place.
4. Review KB91836 - Countermeasures for entry vector threats.
5. Review KB87843 - Dynamic Application Containment rules and best practices.
6. Review KB82925 - Identify what rule corresponds to an Adaptive Threat Protection and Threat Intelligence Exchange event.

This Knowledge Base article discusses a specific threat that's being tracked. The list of IOCs will change over time; check Trellix Insights for the latest IOCs.
 
Campaign IOC

Type	Value
SHA256	0CF6882D750EEA945A9B239DFEAC39F65EFD91B3D0811159707F1CEC6CD80CC0

Minimum Content Versions

Content Type	Version
V2 DAT (VirusScan Enterprise)	10355
V3 DAT (Endpoint Security)	4807

 
Detection Summary                               

IOC	Scanner	Detection
0CF6882D750EEA945A9B239DFEAC39F65EFD91B3D0811159707F1CEC6CD80CC0	AVEngine V2	VBS/Downloader.aan
	AVEngine V3	VBS/Downloader.aan
	JTI (ATP Rules)	JTI/Suspect.196612!9ac271077662
	RP Static	-
	RP Dynamic	-

Minimum set of Manual Rules to improve protection to block this campaign:

IMPORTANT: Always follow best practices when you enable new rules and signatures.

When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration.

For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.

Endpoint Security - Advanced Threat Protection:
Host Intrusion Prevention:
Aggressive set of Manual Rules to improve protection to block this campaign:

IMPORTANT: Always follow best practices when you enable new rules and signatures.

When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration.

For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.

VirusScan Enterprise - Access Protection Rules:
Host Intrusion Prevention: