AI-Generated MDE Queries from APT28 Clipboard Attacks – Source: socprime.com

How It Works

This feature of Uncoder AI transforms structured threat intel into Microsoft Defender for Endpoint-compatible KQL detection rules. In this case, it ingests IOCs from CERT-UA#11689, focusing on a known APT28 tradecraft: clipboard-based PowerShell payloads fetching staging scripts from malicious domains.

IOC Extraction from Reported Behavior

The left panel shows observables extracted from the report, including:

• PowerShell droppers (Browser.ps1, rdp.exe, zapit.exe)

Legitimate-looking C2 domains like mail.zhblz.com and obfuscated ones like docs.google.com.spreadsheets.d.l1p6eeakedbmwteh…

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KQL Generation for Microsoft Defender

Uncoder AI auto-generates the following detection query:

union * 

| where RemoteUrl == "docs.google.com.spreadsheets.d.l1p6eeakedbmwteh36vana6hu-glaekssht-boujdk.zhblz.com"

or RemoteUrl == "mail.zhblz.com"

or RemoteUrl == "doc.gmail.com.gyehdhhrggdi1323sdnhnsiwvh2uhdqjwdhhfjcjeuejcj.zhblz.com"

This structure is designed to match RemoteUrl field values in Microsoft Defender logs, detecting attempts to contact attacker-controlled infrastructure.

Why It’s Innovative

This capability showcases several AI-driven enhancements:

• Automatic IOC Formatting: Long, nested subdomains are placed in syntactically correct KQL.
  
• Field Mapping Intelligence: Ensures use of RemoteUrl, which aligns with Microsoft Defender’s event schema.
  
• Zero Manual Effort: Converts threat reports directly into executable queries without human intervention.
  

Instead of copying and cleaning IOCs from PDFs or PDFs or STIX files, analysts get a valid detection logic instantly.

Operational Value

This feature provides direct value for SOC teams and detection engineers:

• Immediate IOC Enforcement: Analysts can plug and run the query in MDE to find infected machines or attempted connections.
  
• High Confidence Detection: Focuses only on known attacker infrastructure, reducing noise.
  
• Saves Analyst Hours: Bypasses the usual IOC-to-query manual formatting process.
  

Security teams can also incorporate this logic into custom hunting dashboards or alerting pipelines.

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