Analysis

  • max time kernel
    184s
  • max time network
    201s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:15

General

  • Target

    b307f7c1e969d987014c3d8ac0b53fa9b3dc3bcd4d4e17d76ecf0ef44eaf7600.exe

  • Size

    603KB

  • MD5

    957826c0b478164be9dbcd52b0a89a2f

  • SHA1

    abe6d59aa6fd813216acaad456c919ee62bd1275

  • SHA256

    b307f7c1e969d987014c3d8ac0b53fa9b3dc3bcd4d4e17d76ecf0ef44eaf7600

  • SHA512

    d1e3cd2997a930d3d28fc7b6e01418351301684eb2010e0ba9711c983ec62d51f53910639072f7ab81d0a577ab7c310d345cb30c27b773b66209d3b487cc6549

  • SSDEEP

    12288:fIny5DYTErgrP5IpvDP2zUem+qIKmjPSCKG+Bt01g9K:HUTErqmpbVemeDSfnt0iK

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b307f7c1e969d987014c3d8ac0b53fa9b3dc3bcd4d4e17d76ecf0ef44eaf7600.exe
    "C:\Users\Admin\AppData\Local\Temp\b307f7c1e969d987014c3d8ac0b53fa9b3dc3bcd4d4e17d76ecf0ef44eaf7600.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:4948
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4312
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3492
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4384
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1284
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1264
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:932
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3680
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2104
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4520
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:5076
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4444
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:5056
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4812

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nss4112.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ac97a0a4e7eb533cfcbb299a169e71db

            SHA1

            da2f5635f49deab4380f8bf35da2bd97fc64e5b2

            SHA256

            834d8d360f98644409d7aa9bd174be2255ef2580f01d692ab1c3085f5dff4d67

            SHA512

            1326a7cbd72bdeb1f515ecfbb61a43a65cffb5182be6d349d55ed3cc2d6ee582b3e2cefa26195c5362426ac40be3de40bcc8af5e620e0dbcc6866988b405b813

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ac97a0a4e7eb533cfcbb299a169e71db

            SHA1

            da2f5635f49deab4380f8bf35da2bd97fc64e5b2

            SHA256

            834d8d360f98644409d7aa9bd174be2255ef2580f01d692ab1c3085f5dff4d67

            SHA512

            1326a7cbd72bdeb1f515ecfbb61a43a65cffb5182be6d349d55ed3cc2d6ee582b3e2cefa26195c5362426ac40be3de40bcc8af5e620e0dbcc6866988b405b813

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ac97a0a4e7eb533cfcbb299a169e71db

            SHA1

            da2f5635f49deab4380f8bf35da2bd97fc64e5b2

            SHA256

            834d8d360f98644409d7aa9bd174be2255ef2580f01d692ab1c3085f5dff4d67

            SHA512

            1326a7cbd72bdeb1f515ecfbb61a43a65cffb5182be6d349d55ed3cc2d6ee582b3e2cefa26195c5362426ac40be3de40bcc8af5e620e0dbcc6866988b405b813

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ac97a0a4e7eb533cfcbb299a169e71db

            SHA1

            da2f5635f49deab4380f8bf35da2bd97fc64e5b2

            SHA256

            834d8d360f98644409d7aa9bd174be2255ef2580f01d692ab1c3085f5dff4d67

            SHA512

            1326a7cbd72bdeb1f515ecfbb61a43a65cffb5182be6d349d55ed3cc2d6ee582b3e2cefa26195c5362426ac40be3de40bcc8af5e620e0dbcc6866988b405b813

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2a1a4940ca5ee7aaaedc5ea98d2dc967

            SHA1

            ac89b02f7a8e1a147fa8963973aac0957ccc75a9

            SHA256

            f7ffa66feec5a8554dc7983f38e77ecfa7bc5dc1af08cde22e6936c45cb52ba8

            SHA512

            063b36c8cb9fcadde4a1013ba11422b50b94000e3bd87e687ca12e354c26e0339049194e29b78a6d330ecc1c4671b415bd29bd7af860cd79ec1b085f5f88899d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2a1a4940ca5ee7aaaedc5ea98d2dc967

            SHA1

            ac89b02f7a8e1a147fa8963973aac0957ccc75a9

            SHA256

            f7ffa66feec5a8554dc7983f38e77ecfa7bc5dc1af08cde22e6936c45cb52ba8

            SHA512

            063b36c8cb9fcadde4a1013ba11422b50b94000e3bd87e687ca12e354c26e0339049194e29b78a6d330ecc1c4671b415bd29bd7af860cd79ec1b085f5f88899d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2a1a4940ca5ee7aaaedc5ea98d2dc967

            SHA1

            ac89b02f7a8e1a147fa8963973aac0957ccc75a9

            SHA256

            f7ffa66feec5a8554dc7983f38e77ecfa7bc5dc1af08cde22e6936c45cb52ba8

            SHA512

            063b36c8cb9fcadde4a1013ba11422b50b94000e3bd87e687ca12e354c26e0339049194e29b78a6d330ecc1c4671b415bd29bd7af860cd79ec1b085f5f88899d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            30aaf153c2bb0fabe95e48cbb5115d6f

            SHA1

            53c0a43d46c40c8fdc2da9ce2b93d9e3b786d51c

            SHA256

            346806eb89e47d7410567b212361221e1764521cec49f84b8a172f85d2cfdf5f

            SHA512

            cb8ae95227e9df2bb2c4e3a11bf9d10932c4bd782bb50bc0f8e1a58491b672e90891af1dd255838668f04df3833d1347877a04aa7b9603e5b70492040ef5dfdc

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            30aaf153c2bb0fabe95e48cbb5115d6f

            SHA1

            53c0a43d46c40c8fdc2da9ce2b93d9e3b786d51c

            SHA256

            346806eb89e47d7410567b212361221e1764521cec49f84b8a172f85d2cfdf5f

            SHA512

            cb8ae95227e9df2bb2c4e3a11bf9d10932c4bd782bb50bc0f8e1a58491b672e90891af1dd255838668f04df3833d1347877a04aa7b9603e5b70492040ef5dfdc

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c39cd670f4688506091e16ba71eb2b11

            SHA1

            73b2f7000e0c785deba4923e428072d764688039

            SHA256

            84b2b10f1b349e6647279716c60e00cd69c085bcfd3c8e23dab2a81cc117c4ea

            SHA512

            278675ef26f90426d2abd29c0558150720b6a1fc1a660c5c9b4e749730853b6d370329662796ac5fc70f89c08e599590a0fe1724c82b2102e187a6b31837c148

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c39cd670f4688506091e16ba71eb2b11

            SHA1

            73b2f7000e0c785deba4923e428072d764688039

            SHA256

            84b2b10f1b349e6647279716c60e00cd69c085bcfd3c8e23dab2a81cc117c4ea

            SHA512

            278675ef26f90426d2abd29c0558150720b6a1fc1a660c5c9b4e749730853b6d370329662796ac5fc70f89c08e599590a0fe1724c82b2102e187a6b31837c148

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c39cd670f4688506091e16ba71eb2b11

            SHA1

            73b2f7000e0c785deba4923e428072d764688039

            SHA256

            84b2b10f1b349e6647279716c60e00cd69c085bcfd3c8e23dab2a81cc117c4ea

            SHA512

            278675ef26f90426d2abd29c0558150720b6a1fc1a660c5c9b4e749730853b6d370329662796ac5fc70f89c08e599590a0fe1724c82b2102e187a6b31837c148

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            be59d9a8058988452e9fcd14358740e8

            SHA1

            36ad625b75a677def738ec5b4970b92794146723

            SHA256

            8885c7e7c5314d77b1a0ccdb6acde05d1b6c85cb8d2429b79284db7c170fad00

            SHA512

            735bd8ffb9ffb0b019339ff9409c015fb6b1178b6814a46baaac7d5a701ccbe5e715e7a96afe67f4e5c7f4131453d7a10b748b0e16f9c9bddfaa5b36192d5c17

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            be59d9a8058988452e9fcd14358740e8

            SHA1

            36ad625b75a677def738ec5b4970b92794146723

            SHA256

            8885c7e7c5314d77b1a0ccdb6acde05d1b6c85cb8d2429b79284db7c170fad00

            SHA512

            735bd8ffb9ffb0b019339ff9409c015fb6b1178b6814a46baaac7d5a701ccbe5e715e7a96afe67f4e5c7f4131453d7a10b748b0e16f9c9bddfaa5b36192d5c17

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            be59d9a8058988452e9fcd14358740e8

            SHA1

            36ad625b75a677def738ec5b4970b92794146723

            SHA256

            8885c7e7c5314d77b1a0ccdb6acde05d1b6c85cb8d2429b79284db7c170fad00

            SHA512

            735bd8ffb9ffb0b019339ff9409c015fb6b1178b6814a46baaac7d5a701ccbe5e715e7a96afe67f4e5c7f4131453d7a10b748b0e16f9c9bddfaa5b36192d5c17

          • memory/932-147-0x0000000000000000-mapping.dmp

          • memory/1264-142-0x0000000000000000-mapping.dmp

          • memory/1284-141-0x0000000000000000-mapping.dmp

          • memory/2104-158-0x0000000000000000-mapping.dmp

          • memory/3492-137-0x0000000000000000-mapping.dmp

          • memory/3680-153-0x0000000000000000-mapping.dmp

          • memory/4312-136-0x0000000000000000-mapping.dmp

          • memory/4384-140-0x0000000000000000-mapping.dmp

          • memory/4444-167-0x0000000000000000-mapping.dmp

          • memory/4520-159-0x0000000000000000-mapping.dmp

          • memory/4948-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4948-163-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4948-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/5076-166-0x0000000000000000-mapping.dmp