Description of Campaign
A fake purchase order was sent to a coffee company in Ukraine, which appeared to be sent from an oil provider in Saudi Arabia. Clicking on the image in the body of the email resulted in a variant of GuLoader downloaded from the cloud. The malware deployed itself using the free Nullsoft Scriptable Install System (NSIS) installer authoring tool for Microsoft Windows.

Our Threat Research team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by Fortinet 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	C4DEBFF9C0EC8A56AEA5CD97215C6C906BD475EA8BD521FB9A346A4C992A0448
SHA256	14D52119459EF12BE3A2F9A3A6578EE3255580F679B1B54DE0990B6BA403B0FE
URL	bounceclick.live/VVB/COrg_RYGGqN229.binb

Minimum Content Versions

Content Type	Version
V2 DAT (VirusScan Enterprise)	10360
V3 DAT (Endpoint Security)	4812

  
Detection Summary                               

IOC	Scanner	Detection
C4DEBFF9C0EC8A56AEA5CD97215C6C906BD475EA8BD521FB9A346A4C992A0448	AVEngine V2	NSIS/Injector.k
	AVEngine V3	NSIS/Injector.k
	JTI (ATP Rules)	-
	RP Static	-
	RP Dynamic	-

 

IOC	Scanner	Detection
14D52119459EF12BE3A2F9A3A6578EE3255580F679B1B54DE0990B6BA403B0FE	AVEngine V2	NSIS/Injector.k
	AVEngine V3	NSIS/Injector.k
	JTI (ATP Rules)	-
	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.

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: