Nvcgehin Banker Dropper (provisional)

Multi-stage Android banking-trojan dropper protected by the bespoke ‘nvcgehin’ packer — a per-build polymorphic, pure-Java crypter (no native library) that nests several AES-256-GCM layers with HKDF-derived keys to conceal and unpack a child banker DEX at runtime. The unpacked banker reports to Firebase Realtime Database instances (observed: alex-538c5, hukum-da57e, demg-5b242, maha-f60b0) and to a Telegram bot (bot token + chat id). C2s were not taken from static config: they were recovered by walking the packer’s decryption chain down to the child payload and confirming the exfil/command sinks that consume them. Provisional bucket pending formal attribution.