Before extraction, it is standard practice to verify the file's origin and integrity to ensure the "evidence" hasn't been tampered with or corrupted during download.
: .evtx files from Windows (Security, System, or Application logs) to track lateral movement or brute-force attempts.
Based on typical training scenarios (such as those from Chris Sanders’ investigation paths ), the archive likely contains:
: Use tools like PowerShell ( Get-FileHash ) or CertUtil to calculate SHA-256 or MD5 hashes.
The "CSR" in the filename often stands for or refers to specific training modules (like those from the Applied Network Defense community). These files are intentionally "noisy" to teach students how to filter through thousands of legitimate events to find the "needle in the haystack"—the actual indicators of compromise (IOCs).
: Use the 7-Zip Command Line command 7z l csr_training.7z to list contents without decompressing. This reveals file names, original timestamps, and compression methods, which can provide immediate clues about the "incident" being studied. 2. Common Contents
: Exported registry files to check for persistence mechanisms like "Run" keys.