Trellix Insights: Apostle ransomware targeted attack on higher education
Technical Articles ID:
KB95193
Last Modified: 2022-09-05 09:04:08 Etc/GMT
Last Modified: 2022-09-05 09:04:08 Etc/GMT
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Trellix Insights: Apostle ransomware targeted attack on higher education
Technical Articles ID:
KB95193
Last Modified: 2022-09-05 09:04:08 Etc/GMT Environment
IMPORTANT: This Knowledge Base article discusses a specific threat that is being automatically tracked by Trellix Insights technology. The content is intended for use by Trellix Insights users, but is provided for general knowledge to all customers. Contact us for more information about Trellix Insights.
SummaryThe Agrius threat actor targeted the higher education sector in Israel with custom Apostle ransomware. The malware was obfuscated, encrypted, and compressed as a resource in the .NET Jennlog loader. Jennlog performed system checks, and if not executed in an analysis environment, dropped the ransomware. The loader contained a configuration file with various instructions, including check if a debugger is attached, disable task manager for the user, sleep for several seconds, and self delete. Our Threat Research team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by SentinelOne and shared publicly. How to use this article:
Campaign IOC
Minimum Content Versions
Detection Summary
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: 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. Host Intrusion Prevention: Rule ID: 1148 CMD Tool Access by a Network Aware Application Rule ID: 2806 Attempt to create a hardlink to a file Rule ID: 6011 Generic Application Invocation Protection Affected Products |
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