Missax Cyberfile _verified_ Jun 2026

: A significant portion of their catalog is captured and distributed in 4K resolution (2160p). This focus on ultra-high-definition video means their digital files are exceptionally large, often ranging between 4 GB and 8 GB per scene.

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| 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 ). | : A significant portion of their catalog is

Be wary of "file-sharing" sites that require suspicious software installations. | Component | Function | Technical Details |

| Indicator | Detail | |-----------|--------| | | *.cloudfront.net , *.digitaloceanspaces.com (used as C2 gateways). | | IP ranges | 52.0.0.0/8 (AWS), 138.197.0.0/16 (DigitalOcean). | | DNS TXT pattern | Queries for strings starting with MF_ followed by 32‑hex characters. | | User‑Agent | Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 – often spoofed to look like normal browser traffic. |