| Component | Function | Technical Details | |-----------|----------|-------------------| | | Initial stage; unpacks encrypted payloads from resources or from the C2 response. | Uses Windows API VirtualAllocEx , WriteProcessMemory , and CreateRemoteThread for in‑memory execution (process‑hollowing). | | Core Engine (CyberFile.dll) | Main logic – orchestrates data collection, encryption, and exfiltration. | Implements a custom XOR‑AES hybrid for payload encryption; communicates over HTTPS with self‑signed certs (pinning via SHA‑256 hash). | | Modules | Feature extensions loaded on demand. | • FileGrabber – recursive search for “*.docx, *.xlsx, *.pdf, *.sql” in %USERPROFILE% , %APPDATA% .• BrowserStealer – reads Chrome/Edge/Firefox SQLite databases, extracts cookies, passwords (DPAPI‑protected).• CredDump – leverages MiniDumpWriteDump on LSASS; parses lsass.dmp for clear‑text credentials.• Keylogger – SetWindowsHookEx (WH_KEYBOARD_LL) with low‑level hook in a hidden thread. | | Persistence Layer | Ensures survivability across reboots. | Adds HKCU\Software\Microsoft\Windows\CurrentVersion\Run\random pointing to the dropper; also creates a scheduled task ( schtasks.exe /Create /SC ONLOGON ). | | C2 Communication Module | Handles command & control. | Primary channel: HTTPS POST to https://<gateway>.cloudfront.net/api/v1/ with encrypted JSON payload. Secondary channel: DNS TXT queries for “heartbeat”; responses contain base64‑encoded commands. | | Self‑Destruct / Anti‑Analysis | Evades sandboxing and forensic collection. | Detects virtualization (VMware, VirtualBox, Hyper‑V) via registry keys and MAC address patterns; if detected, either sleeps indefinitely or deletes itself. Also checks for debugger presence ( IsDebuggerPresent ) and known sandbox processes ( vboxservice.exe ). |
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Protecting sensitive data by converting it into code that can only be accessed with a specific key. | Component | Function | Technical Details |
Only downloading or accessing files from reputable and official sources to avoid malware. | Implements a custom XOR‑AES hybrid for payload
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