Description of Campaign
DarkSide ransomware uses Salsa20 and RSA encryption and appends a random extension to encrypted files. The ransom note reports that the threat actor stole more than 100 GB of data, and threatens to publish the information if the ransom is not paid. Victims are presented with Bitcoin and Moreno addresses to pay the cybercriminal the $2,000.00 for the decryption key.

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, which contains countermeasures.
5. Review KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.
6. Review KB82925 - Identify what rule corresponds to an Adaptive Threat Protection and Threat Intelligence Exchange event.

Campaign IOC

Type	Value
SHA256	9CEE5522A7CA2BFCA7CD3D9DABA23E9A30DEB6205F56C12045839075F7627297
URL	http://darksidedxcftmqa.onion/

Minimum Content Versions:

Content Type	Version
V2 DAT (VirusScan Enterprise)	9725
V3 DAT (Endpoint Security)	4177

Detection Summary       

IOC	Scanner	Detection
9CEE5522A7CA2BFCA7CD3D9DABA23E9A30DEB6205F56C12045839075F7627297	AVEngine V2	Ransomware-HBC!10ED48796107
	AVEngine V3	Ransomware-HBC!10ED48796107
	JTI (ATP Rules)	ATP/Suspect!d1dfe82775c1
	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:

Rule ID: 4 Use GTI file reputation to identify trusted or malicious files

Endpoint Security - Exploit Prevention:

Rule ID: 6151 Unmanaged Powershell Detected - II

Rule ID: 6086 Powershell Command Restriction - Command
Rule ID: 6073 Execution Policy Bypass in Powershell

Host Intrusion Prevention:

Rule ID: 6073 Execution Policy Bypass in Powershell
Rule ID: 6086 Powershell Command Restriction - Command

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.
Endpoint Security - Dynamic Application Containment:

Modifying the Services registry location

Host Intrusion Prevention:

Rule ID: 6011 Generic Application Invocation Protection
Rule ID: 1020 Windows Agent Shielding - File Access
Rule ID: 6010 Generic Application Hooking Protection
Rule ID: 1003 Windows Agent Shielding - Process Access