General

  • Target

    VooVMeeting_1410000197_3.3.5.510.publish.exe

  • Size

    139.9MB

  • Sample

    220525-r95nxafcer

  • MD5

    f5a4eddee715fc8bb9f0ac6cd888edc2

  • SHA1

    5c7b6fbceef08f8798251e8495007428d013dc29

  • SHA256

    e0e866b57a0767d237df3c54b9ced798a0407af00cc8a9f7d19c96fa66cd4e80

  • SHA512

    0f982bebce1d4337e1e42cda6f57140e0b985dd76be99de1a09bf2245dd41ca815dfdb7c0c0d5180eac5db00c6283378ac034b0866d32286f0e5897a50411a16

Malware Config

Targets

    • Target

      VooVMeeting_1410000197_3.3.5.510.publish.exe

    • Size

      139.9MB

    • MD5

      f5a4eddee715fc8bb9f0ac6cd888edc2

    • SHA1

      5c7b6fbceef08f8798251e8495007428d013dc29

    • SHA256

      e0e866b57a0767d237df3c54b9ced798a0407af00cc8a9f7d19c96fa66cd4e80

    • SHA512

      0f982bebce1d4337e1e42cda6f57140e0b985dd76be99de1a09bf2245dd41ca815dfdb7c0c0d5180eac5db00c6283378ac034b0866d32286f0e5897a50411a16

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v6

Tasks