Description of Campaign
A phishing campaign, believed to be from the threat actor tracked as Kimsuky, is leveraging the current COVID-19 outbreak in North Korea to target victims with press release-themed attachments.
The attachments appear to be either a Hangul or Word document but hide an executable extension. Once opened, the malicious file creates a malicious script in the machine's AppData folder, and upon execution, the threat actor-controlled server is contacted to retrieve a document file.

Our Threat Research team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by AhnLab 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	2C20AC485FD55BD1A5C4B75C5BA521E5B19912325737617178DFCB5A4E408AEF
URL	http://mc.pzs.kr/themes/mobile/images/about/temp/attach/
URL	http://mc.pzs.kr/themes/mobile/images/about/temp/upload/list.php?query=1
URL	http://mc.pzs.kr/themes/mobile/images/about/temp/upload/list.php?query=6
URL	http://mc.pzs.kr/themes/mobile/images/about/temp/upload/lib.php?idx=1
URL	http://mc.pzs.kr/themes/mobile/images/about/temp/upload

Minimum Content Versions

Content Type	Version
V2 DAT (VirusScan Enterprise)	10354
V3 DAT (Endpoint Security)	4806

  
Detection Summary                               

IOC	Scanner	Detection
2C20AC485FD55BD1A5C4B75C5BA521E5B19912325737617178DFCB5A4E408AEF	AVEngine V2	Generic.glg
	AVEngine V3	Generic.glg
	JTI (ATP Rules)	JTI/Suspect.1179887!cda48fc75952
	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: