General

  • Target

    UltraViewer_setup_6.6.108_en.exe

  • Size

    3.5MB

  • Sample

    241104-v4m4fsvbjj

  • MD5

    cd546a1249e93ce0bc7df42fd06b3c68

  • SHA1

    9adb885f54107908413787d29dc8a3c04b2d19f5

  • SHA256

    fbcca6ee7a05063c2e7816f771b0ce370bc498620e2a8209ce2c0a50ee177313

  • SHA512

    b232ae44534f9ca77deb8b1291d902506f35d5de5c399f193c16198f7e3564e741f076e3763cf14e6ca779d2058b9ac57bfc53e09285326b752acd3affec5318

  • SSDEEP

    98304:D5zMfaTDdmodjsyRVfaP3kAjiWJrZWd9ViPJ:DO0ZjdjhVlncW7cJ

Malware Config

Targets

    • Target

      UltraViewer_setup_6.6.108_en.exe

    • Size

      3.5MB

    • MD5

      cd546a1249e93ce0bc7df42fd06b3c68

    • SHA1

      9adb885f54107908413787d29dc8a3c04b2d19f5

    • SHA256

      fbcca6ee7a05063c2e7816f771b0ce370bc498620e2a8209ce2c0a50ee177313

    • SHA512

      b232ae44534f9ca77deb8b1291d902506f35d5de5c399f193c16198f7e3564e741f076e3763cf14e6ca779d2058b9ac57bfc53e09285326b752acd3affec5318

    • SSDEEP

      98304:D5zMfaTDdmodjsyRVfaP3kAjiWJrZWd9ViPJ:DO0ZjdjhVlncW7cJ

    • Stops running service(s)

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

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

    • Network Share Discovery

      Attempt to gather information on host network.

    • 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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks