S2msp_v334up.exe

| Layer | What the Binary Does | |-------|-----------------------| | | Calls WinMain → CreateThread for multiple payloads (keylogger, network, persistence). | | Persistence | Creates a registry Run key under HKCU\Software\Microsoft\Windows\CurrentVersion\Run pointing to itself; also drops a copy in %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup . | | Network | Connects to hard‑coded C2 domains (often using fast‑flux DNS) via HTTP/HTTPS over port 80/443. Uses AES‑256‑CBC encryption for payloads. | | Data collection | Captures keystrokes, screenshots, clipboard contents, and extracts stored credentials from browsers (Chrome, Edge, Firefox) and FTP clients. | | File manipulation | Searches for files with extensions like .docx , .xlsx , .pdf , compresses them into a ZIP archive, and uploads them to the C2 server. | | Self‑defense | Checks for sandbox artifacts (e.g., presence of VMware , VirtualBox drivers), delays execution if detected, and can delete itself after a successful exfiltration. |

If an older version of "Scan to Microsoft SharePoint" is present, uninstall it through the Windows Control Panel first. s2msp_v334up.exe

According to official PFU Ricoh documentation, installing the update requires specific steps: | Layer | What the Binary Does |

| Error Message | Possible Fix | |---------------|---------------| | "Old version not found" | Ensure base software (v3.33 or earlier) is installed. | | "Access denied" | Run as Administrator (right-click → Run as admin). | | "File corrupted" | Re-download from official source; check hash (MD5/SHA256). | | "Antivirus blocked it" | Temporarily disable AV only if file is verified safe. | Uses AES‑256‑CBC encryption for payloads

This is a generated analysis for informational purposes. Do not download or run unknown .exe files from untrusted sources. Always verify files with official vendors.