REDCap help.php Web Shell Creation or Modification
Detects creation, modification, or renaming of 'help.php' within a REDCap application path. This activity is indicative of a web shell deployment, as observed by GTIG with UNC6508 using 'help.php' for persistence and payload uploads. The combination of the campaign-specific filename and REDCap path provides a high-confidence signal.
Microsoft Sentinel (KQL)
