Trellix Insights: Zloader with a New Infection Technique
Technical Articles ID:
KB94921
Last Modified: 2022-09-07 09:35:05 Etc/GMT
Last Modified: 2022-09-07 09:35:05 Etc/GMT
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Trellix Insights: Zloader with a New Infection Technique
Technical Articles ID:
KB94921
Last Modified: 2022-09-07 09:35:05 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.
SummaryTrellix Labs has discovered a new technique that downloads and executes malicious DLLs (Zloader) without any malicious code present in the initial spammed attachment macro. In the last few years, Microsoft Office macro malware using social engineering as a means for malware infection has been a dominant part of the threat landscape. Malware authors continue to evolve their techniques to evade detection. These techniques involve utilizing macro obfuscation, DDE, living off the land tools (LOLBIN), and even utilizing legacy supported XLS formats. Our Threat Research team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by Trellix Labs 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: Endpoint Security - Exploit Prevention: 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. Host Intrusion Prevention: Rule ID: 6011 Generic Application Invocation Protection Rule ID: 1020 Windows Agent Shielding - File Access Rule ID: 1148 CMD Tool Access by a Network Aware Application Affected Products |
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