Detecting T1055 Process Injection with Sysmon

When to Use

• When hunting for defense evasion techniques that hide malicious code inside legitimate processes
• After EDR alerts for suspicious cross-process memory access or remote thread creation
• When investigating malware that injects into svchost.exe, explorer.exe, or other system processes
• During purple team exercises testing detection of process injection variants
• When validating Sysmon configuration coverage for injection detection

Prerequisites

• Sysmon deployed with comprehensive configuration capturing Events 1, 7, 8, 10, 25
• Event ID 8 (CreateRemoteThread) enabled for remote thread detection
• Event ID 10 (ProcessAccess) configured with appropriate access mask filters
• Event ID 7 (ImageLoaded) for DLL injection detection
• Event ID 25 (ProcessTampering) for process hollowing on Sysmon 13+
• SIEM platform for correlation and alerting