Sigma Rules
6 rules found for "Caleb Stewart"
Malicious PowerShell Commandlets - PoshModule
Detects Commandlet names from well-known PowerShell exploitation frameworks
Malicious PowerShell Commandlets - ScriptBlock
Detects Commandlet names from well-known PowerShell exploitation frameworks
Malicious PowerShell Commandlets - ProcessCreation
Detects Commandlet names from well-known PowerShell exploitation frameworks
CVE-2024-1708 - ScreenConnect Path Traversal Exploitation
This detects file modifications to ASPX and ASHX files within the root of the App_Extensions directory, which is allowed by a ZipSlip vulnerability in versions prior to 23.9.8. This occurs during exploitation of CVE-2024-1708.
CVE-2024-1708 - ScreenConnect Path Traversal Exploitation - Security
This detects file modifications to ASPX and ASHX files within the root of the App_Extensions directory, which is allowed by a ZipSlip vulnerability in versions prior to 23.9.8. This occurs during exploitation of CVE-2024-1708. This requires an Advanced Auditing policy to log a successful Windows Event ID 4663 events and with a SACL set on the directory.
ScreenConnect User Database Modification
Detects file modifications to the temporary xml user database file indicating local user modification in the ScreenConnect server. This will occur during exploitation of the ScreenConnect Authentication Bypass vulnerability (CVE-2024-1709) in versions <23.9.8, but may also be observed when making legitimate modifications to local users or permissions.