General

  • Target

    file.exe

  • Size

    4.3MB

  • Sample

    241126-z9k89szrax

  • MD5

    f5776b965778a92b20d7cdcc3ed87b8a

  • SHA1

    1b5a38a9d6b40243306672d8beba4bd38081788e

  • SHA256

    ae296c763a4d1175347ff21ca6b2fe38bbd3f5680be48bd20a27461fcd1632e5

  • SHA512

    b3ee8f35314f237087c8b1d43b0771384e20f2f0a40c3c0d4d064f1b3e5a6fb7986c169a7d7c313f08e0600e03257516bf8ea9c47c5f16c671aeb266b365c911

  • SSDEEP

    98304:ACIXMkbMEJbwFRWyN3nUJPmun3bWaxuOPCOdbygUA07Io:ACiMkg7yy9LgWac7ONb

Malware Config

Targets

    • Target

      file.exe

    • Size

      4.3MB

    • MD5

      f5776b965778a92b20d7cdcc3ed87b8a

    • SHA1

      1b5a38a9d6b40243306672d8beba4bd38081788e

    • SHA256

      ae296c763a4d1175347ff21ca6b2fe38bbd3f5680be48bd20a27461fcd1632e5

    • SHA512

      b3ee8f35314f237087c8b1d43b0771384e20f2f0a40c3c0d4d064f1b3e5a6fb7986c169a7d7c313f08e0600e03257516bf8ea9c47c5f16c671aeb266b365c911

    • SSDEEP

      98304:ACIXMkbMEJbwFRWyN3nUJPmun3bWaxuOPCOdbygUA07Io:ACiMkg7yy9LgWac7ONb

    • 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.

    • Enumerates VirtualBox registry keys

    • 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