Threat Actor Uses PowerShell Script to Enumerate Active Directory
Block: prevent execution of the PowerShell enumeration script, audit AD logs, and enforce least privilege.
Block: prevent execution of the PowerShell script, audit AD logs, and enforce least privilege.
Summary
Cybersecurity researchers identified an intrusion in which an unknown threat actor used a PowerShell script coded in a 'vibe' style for AD enumeration. The script searched for the Domain Controller, mapped users, computers, and domains, and then created a directory to export the data. It generated an AD_Report.html file summarizing the enumeration results. The script's execution provided the attacker with a comprehensive view of the AD environment, facilitating lateral movement.
The incident underscores the need to monitor for unauthorized PowerShell activity. Disabling execution of untrusted scripts can mitigate such enumeration. Security teams should review AD logs for similar patterns.
Key changes
- Threat actor used a PowerShell script coded in 'vibe' style for AD enumeration
- Script searched for Domain Controller and mapped users, computers, domains
- Created a directory and exported data files
- Generated AD_Report.html summarizing enumeration
- Provided attacker with comprehensive view of AD environment
- Facilitated lateral movement planning
- Highlights need to monitor unauthorized PowerShell activity
- Disabling execution of untrusted scripts mitigates enumeration