Analysis

  • max time kernel
    43s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:57

General

  • Target

    42db0811ab0c36734f23e0e87685a6e99f04ac109a6fe80c49908d0c75d0bca5.exe

  • Size

    447KB

  • MD5

    f50553427b38ca0a9961a9356125842b

  • SHA1

    e748e46d3e3aa2fa336790a4a759d1eea61e8ff6

  • SHA256

    42db0811ab0c36734f23e0e87685a6e99f04ac109a6fe80c49908d0c75d0bca5

  • SHA512

    eeed9db6f19c0365e40f1e8d16034e514f584c471616c83a66ce61909bd6f49f0f166d981cf0182bb6ce82ffb916b3acee400e455dd5aa742dff53a6d2843b43

  • SSDEEP

    12288:sV6tpTHEOZoCOQ+q5ILOrxGy4Gbvsn5NoqSw:sV6rTkObl5kO1XuNo3w

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 13 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\42db0811ab0c36734f23e0e87685a6e99f04ac109a6fe80c49908d0c75d0bca5.exe
    "C:\Users\Admin\AppData\Local\Temp\42db0811ab0c36734f23e0e87685a6e99f04ac109a6fe80c49908d0c75d0bca5.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:616
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1284
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1212
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:624
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:860
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1288
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:740
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1200
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1992
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1740
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1152
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1292
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1752
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:996

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            61cdf097f22241ba34f1d9dc5d61b84b

            SHA1

            daf236e739970b40eeedd67f1a1f1a47660d9898

            SHA256

            a1ce5df0483ffd20ad6eaf58cc757f95b4d866f1a5168c93bf956f7b1d0df454

            SHA512

            fec9a762b0f96a310cb0683c52fb1a049bccdb7b48ea01bc68f08a17d28d6810cf040795000e3e53ef8dc0a190d53943fa585ca4db9fb3012bb889e91bfd927f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5f10764cd7446c9c9e575c2b0c612a5f

            SHA1

            cb94a9a51251039728f861b2329948c4dab94d8e

            SHA256

            eaa330ccf6d92b21fc1c2daf3ea51e6596c14cd98381960777cfb3ecd0f5128a

            SHA512

            50512e05a0018bc96c6d1485ae19771cc33c9c021d62ac36beb67e8ac38d6668daae2a856ed8088bdacaf20ec9f57427bbec2a99b4a34d62d19db906ec7630f4

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0f632a6e7fe01df2a51dedf6fe2a92a0

            SHA1

            1dc59f49aa549eed7ae147dd52806d139764bc88

            SHA256

            dd19ca649e916982099ef250d8bb85c9480f0c570f166bf589b62d5a7888842c

            SHA512

            e7d9bd95d0ef1385395951197134712b6005a11ab5c997f1e8681883bd426302241b6345645283388b46619e9484211c03fe56fe7b6648eab0fd0aef9566029a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e4b1a2f3e1f390bbfeb64903eea390d1

            SHA1

            5b896eb1c88e108c3de9e1b6c2fc9907c7d336e3

            SHA256

            43a754825cf8e4504184379d5e0bac75e989ffedf222a9114c3ff0385a9e848e

            SHA512

            4b9de33d2742b7fbfa929108c59e22b06a53e61c930ecd7e3b04f4cca7e72434fbca0796e6b1de0c03ea44a4761730fe8818267b339d2e4e82f7c64343fa6430

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e4b1a2f3e1f390bbfeb64903eea390d1

            SHA1

            5b896eb1c88e108c3de9e1b6c2fc9907c7d336e3

            SHA256

            43a754825cf8e4504184379d5e0bac75e989ffedf222a9114c3ff0385a9e848e

            SHA512

            4b9de33d2742b7fbfa929108c59e22b06a53e61c930ecd7e3b04f4cca7e72434fbca0796e6b1de0c03ea44a4761730fe8818267b339d2e4e82f7c64343fa6430

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5a2e272fda0274762309d3842a742b4a

            SHA1

            490d8e3f626a08ddf5d023765f88a0509be9114a

            SHA256

            15750f6717578b34e8fab15b77ef7e4ca975d3dde24447022e917ad1615fdfb2

            SHA512

            2503756b8a5697fccc2c825beebb0bea1b7642f8aafe03eaa53079b3169b3f052ede6dc4864040dc19a7e4ea0c3b25e2c59ce2338010b59b32db3fc784b8646c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5a2e272fda0274762309d3842a742b4a

            SHA1

            490d8e3f626a08ddf5d023765f88a0509be9114a

            SHA256

            15750f6717578b34e8fab15b77ef7e4ca975d3dde24447022e917ad1615fdfb2

            SHA512

            2503756b8a5697fccc2c825beebb0bea1b7642f8aafe03eaa53079b3169b3f052ede6dc4864040dc19a7e4ea0c3b25e2c59ce2338010b59b32db3fc784b8646c

          • \Users\Admin\AppData\Local\Temp\nsj2B77.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj2B77.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2B77.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2B77.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj2B77.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            61cdf097f22241ba34f1d9dc5d61b84b

            SHA1

            daf236e739970b40eeedd67f1a1f1a47660d9898

            SHA256

            a1ce5df0483ffd20ad6eaf58cc757f95b4d866f1a5168c93bf956f7b1d0df454

            SHA512

            fec9a762b0f96a310cb0683c52fb1a049bccdb7b48ea01bc68f08a17d28d6810cf040795000e3e53ef8dc0a190d53943fa585ca4db9fb3012bb889e91bfd927f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            61cdf097f22241ba34f1d9dc5d61b84b

            SHA1

            daf236e739970b40eeedd67f1a1f1a47660d9898

            SHA256

            a1ce5df0483ffd20ad6eaf58cc757f95b4d866f1a5168c93bf956f7b1d0df454

            SHA512

            fec9a762b0f96a310cb0683c52fb1a049bccdb7b48ea01bc68f08a17d28d6810cf040795000e3e53ef8dc0a190d53943fa585ca4db9fb3012bb889e91bfd927f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            61cdf097f22241ba34f1d9dc5d61b84b

            SHA1

            daf236e739970b40eeedd67f1a1f1a47660d9898

            SHA256

            a1ce5df0483ffd20ad6eaf58cc757f95b4d866f1a5168c93bf956f7b1d0df454

            SHA512

            fec9a762b0f96a310cb0683c52fb1a049bccdb7b48ea01bc68f08a17d28d6810cf040795000e3e53ef8dc0a190d53943fa585ca4db9fb3012bb889e91bfd927f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5f10764cd7446c9c9e575c2b0c612a5f

            SHA1

            cb94a9a51251039728f861b2329948c4dab94d8e

            SHA256

            eaa330ccf6d92b21fc1c2daf3ea51e6596c14cd98381960777cfb3ecd0f5128a

            SHA512

            50512e05a0018bc96c6d1485ae19771cc33c9c021d62ac36beb67e8ac38d6668daae2a856ed8088bdacaf20ec9f57427bbec2a99b4a34d62d19db906ec7630f4

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5f10764cd7446c9c9e575c2b0c612a5f

            SHA1

            cb94a9a51251039728f861b2329948c4dab94d8e

            SHA256

            eaa330ccf6d92b21fc1c2daf3ea51e6596c14cd98381960777cfb3ecd0f5128a

            SHA512

            50512e05a0018bc96c6d1485ae19771cc33c9c021d62ac36beb67e8ac38d6668daae2a856ed8088bdacaf20ec9f57427bbec2a99b4a34d62d19db906ec7630f4

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0f632a6e7fe01df2a51dedf6fe2a92a0

            SHA1

            1dc59f49aa549eed7ae147dd52806d139764bc88

            SHA256

            dd19ca649e916982099ef250d8bb85c9480f0c570f166bf589b62d5a7888842c

            SHA512

            e7d9bd95d0ef1385395951197134712b6005a11ab5c997f1e8681883bd426302241b6345645283388b46619e9484211c03fe56fe7b6648eab0fd0aef9566029a

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e4b1a2f3e1f390bbfeb64903eea390d1

            SHA1

            5b896eb1c88e108c3de9e1b6c2fc9907c7d336e3

            SHA256

            43a754825cf8e4504184379d5e0bac75e989ffedf222a9114c3ff0385a9e848e

            SHA512

            4b9de33d2742b7fbfa929108c59e22b06a53e61c930ecd7e3b04f4cca7e72434fbca0796e6b1de0c03ea44a4761730fe8818267b339d2e4e82f7c64343fa6430

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5a2e272fda0274762309d3842a742b4a

            SHA1

            490d8e3f626a08ddf5d023765f88a0509be9114a

            SHA256

            15750f6717578b34e8fab15b77ef7e4ca975d3dde24447022e917ad1615fdfb2

            SHA512

            2503756b8a5697fccc2c825beebb0bea1b7642f8aafe03eaa53079b3169b3f052ede6dc4864040dc19a7e4ea0c3b25e2c59ce2338010b59b32db3fc784b8646c

          • memory/616-54-0x0000000075F51000-0x0000000075F53000-memory.dmp

            Filesize

            8KB

          • memory/624-60-0x0000000000000000-mapping.dmp

          • memory/740-69-0x0000000000000000-mapping.dmp

          • memory/860-61-0x0000000000000000-mapping.dmp

          • memory/1152-85-0x0000000000000000-mapping.dmp

          • memory/1200-75-0x0000000000000000-mapping.dmp

          • memory/1212-58-0x0000000000000000-mapping.dmp

          • memory/1284-57-0x0000000000000000-mapping.dmp

          • memory/1288-63-0x0000000000000000-mapping.dmp

          • memory/1292-86-0x0000000000000000-mapping.dmp

          • memory/1740-80-0x0000000000000000-mapping.dmp

          • memory/1992-79-0x0000000000000000-mapping.dmp