General

  • Target

    file.exe

  • Size

    4.2MB

  • Sample

    241124-d1bskssjay

  • MD5

    f35acf76c5ace4e007dc64fcde784dbe

  • SHA1

    8c3fbdc41b3d357b06902049e2ad6f2e4d136344

  • SHA256

    86088c0dfa1761f1989204ae2d46a3a0b3defaf379a2ccd0b81b0067aae8ec07

  • SHA512

    81c0f7526b83b76e9dbf8fa1256baa0945df7337dc876f45b774651449ef98d776b371d0ec91ff771dad0e722bdb2358205bfeaefc5559e738da157111f3002a

  • SSDEEP

    98304:89kuJYPlJjOx3wSnKkDa4RWrlJqxQl/eelLKu6hTSRxRQee:zIsirKkDHRaJqil/LzIqXQee

Malware Config

Targets

    • Target

      file.exe

    • Size

      4.2MB

    • MD5

      f35acf76c5ace4e007dc64fcde784dbe

    • SHA1

      8c3fbdc41b3d357b06902049e2ad6f2e4d136344

    • SHA256

      86088c0dfa1761f1989204ae2d46a3a0b3defaf379a2ccd0b81b0067aae8ec07

    • SHA512

      81c0f7526b83b76e9dbf8fa1256baa0945df7337dc876f45b774651449ef98d776b371d0ec91ff771dad0e722bdb2358205bfeaefc5559e738da157111f3002a

    • SSDEEP

      98304:89kuJYPlJjOx3wSnKkDa4RWrlJqxQl/eelLKu6hTSRxRQee:zIsirKkDHRaJqil/LzIqXQee

    • CryptBot

      CryptBot is a C++ stealer distributed widely in bundle with other software.

    • Cryptbot family

    • Detects CryptBot payload

      CryptBot is a C++ stealer distributed widely in bundle with other software.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Checks installed software on the system

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks