General

  • Target

    9066N_random.exe

  • Size

    4.5MB

  • Sample

    250327-srxq1swmz2

  • MD5

    5b4e8d97fd7c28dda3d3570fcf5bcdf3

  • SHA1

    c36cd2c8035030a8e3450ba7927fd223b731aae4

  • SHA256

    c06eb19a32aee36330a68d6e3f18c7b96d1b650707aba0eedd317d6578b2d69a

  • SHA512

    b8b49d5d68e830d87b033b3e91b9fee646958bbfa3455219f18b27eba1794c68fb6ab11390cf1c11ccd386da28bb03c32c8d5211eb57bebf5e1900c4b9582704

  • SSDEEP

    98304:G5yDRdS7Fe95lENja89Y+1KVmcrzZFgCG1b5:G5yFEilENjA+1c3rQ

Malware Config

Targets

    • Target

      9066N_random.exe

    • Size

      4.5MB

    • MD5

      5b4e8d97fd7c28dda3d3570fcf5bcdf3

    • SHA1

      c36cd2c8035030a8e3450ba7927fd223b731aae4

    • SHA256

      c06eb19a32aee36330a68d6e3f18c7b96d1b650707aba0eedd317d6578b2d69a

    • SHA512

      b8b49d5d68e830d87b033b3e91b9fee646958bbfa3455219f18b27eba1794c68fb6ab11390cf1c11ccd386da28bb03c32c8d5211eb57bebf5e1900c4b9582704

    • SSDEEP

      98304:G5yDRdS7Fe95lENja89Y+1KVmcrzZFgCG1b5:G5yFEilENjA+1c3rQ

    • GCleaner

      GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

    • Gcleaner family

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

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks