Threat Intelligence
Conclusion:
The analyzed PowerShell script is confirmed to be malicious, associated with a phishing campaign by UNC5687 distributing the MESHAGENT remote access tool.
Gemini identified that the script employs an XOR-based obfuscation algorithm that resembles RC4 to conceal the download URL. Recognizing this pattern, Gemini autonomously generates and executes a Python deobfuscation script within the Code Interpreter sandbox, successfully revealing the external resource. With the URL in hand, Gemini then utilizes GTI function calling to query Google Threat Intelligence for further context. This analysis links the URL to UNC5687, a threat cluster known for using a remote access tool in phishing campaigns impersonating the Security Service of Ukraine. As we’ve seen, the integration of these tools has strengthened Gemini’s ability to function as a malware analyst capable of adapting its approach to address obfuscation and gathering vital context on IOCs. By incorporating the Code Interpreter and GTI function calling, Gemini is better equipped to navigate complex samples by autonomously interpreting hidden elements and contextualizing external references. While these are significant advancements, many challenges remain, especially given the vast diversity of malware and scenarios that exist in the threat landscape. We’re committed to making steady progress, and future updates will continue to enhance Gemini's capabilities, moving us closer to a more autonomous, adaptive approach in threat intelligence automation.Published: 2024-11-19T14:00:00
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