General

  • Target

    winrar-x64-591es.exe

  • Size

    3.2MB

  • Sample

    230103-tjj1mafb5t

  • MD5

    00e28636d3ec03f9ed9779adf3fd1082

  • SHA1

    9355aa490e49f4dc0ee2e88bd37da5aac2528814

  • SHA256

    58b996dc1da30e4202b68b660bd9662c136ec8c994cc3f1ceabac6fed3b1e773

  • SHA512

    8e90e6eec17d5492a2d99ba3bb9223b5907a05fec00d24cebc565759f738454e5fbd7042e7de12edafb4e2ceac41c8768a22034266737cf273a59003638c981e

  • SSDEEP

    98304:hrTOBfKEHp56QvnPGdkcjKlrki0q0ly5kr5Hhx:hrpEyCnPBgif0l+krVhx

Malware Config

Extracted

Family

cryptbot

C2

http://xunbip25.top/gate.php

Targets

    • Target

      winrar-x64-591es.exe

    • Size

      3.2MB

    • MD5

      00e28636d3ec03f9ed9779adf3fd1082

    • SHA1

      9355aa490e49f4dc0ee2e88bd37da5aac2528814

    • SHA256

      58b996dc1da30e4202b68b660bd9662c136ec8c994cc3f1ceabac6fed3b1e773

    • SHA512

      8e90e6eec17d5492a2d99ba3bb9223b5907a05fec00d24cebc565759f738454e5fbd7042e7de12edafb4e2ceac41c8768a22034266737cf273a59003638c981e

    • SSDEEP

      98304:hrTOBfKEHp56QvnPGdkcjKlrki0q0ly5kr5Hhx:hrpEyCnPBgif0l+krVhx

    • CryptBot

      A C++ stealer distributed widely in bundle with other software.

    • Modifies system executable filetype association

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Modifies Installed Components in the registry

    • Registers COM server for autorun

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

MITRE ATT&CK Enterprise v6

Tasks