Analysis

  • max time kernel
    179s
  • max time network
    187s
  • 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 10:27

General

  • Target

    42bb7fac9de2f2d487a1a2bcdc09bca506041e54cd60661fb3d287af590089ab.exe

  • Size

    602KB

  • MD5

    3c97ad117366a7808235c2517e594d5f

  • SHA1

    b76833703fd9da1d4db5c71eb93252dd977073a9

  • SHA256

    42bb7fac9de2f2d487a1a2bcdc09bca506041e54cd60661fb3d287af590089ab

  • SHA512

    6e055d69762ef8ec3e4a8bc9283b3b6819f4c169e37e812e97ef89aa2a9e3872a856b17b3b6d70b56afe18ab419b725439c5249e4268ddec826a8a02e43169f7

  • SSDEEP

    12288:ZIny5DYTcImzbfYWOsddpmyVTzfCDP1AYkc0qdPXeT/pu4lG:VUTcNIJKn3VyDRh0WeTEW

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\42bb7fac9de2f2d487a1a2bcdc09bca506041e54cd60661fb3d287af590089ab.exe
    "C:\Users\Admin\AppData\Local\Temp\42bb7fac9de2f2d487a1a2bcdc09bca506041e54cd60661fb3d287af590089ab.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:1632
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4132
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2860
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4800
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4228
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1824
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:5012
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3500
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1908
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3496
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2200
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2976
          • 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:4112
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3944

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa347F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7adf7881385be17a301bfb9495835714

            SHA1

            69a43c9fabfe64bee1af27c4ee5cf016b0e94786

            SHA256

            41981ec0ffb18bc21fced503a51435afb972ce26dc7be9f2aa6b6e82f791c0c5

            SHA512

            a680824c63d0e703913a1bb3b87d28afe966c174fddae9e2bfe1349215257052724cbdb0c6e7153186f66f4baaac2010eaf56fbff0e6a360a0710eee7af5e5c8

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7adf7881385be17a301bfb9495835714

            SHA1

            69a43c9fabfe64bee1af27c4ee5cf016b0e94786

            SHA256

            41981ec0ffb18bc21fced503a51435afb972ce26dc7be9f2aa6b6e82f791c0c5

            SHA512

            a680824c63d0e703913a1bb3b87d28afe966c174fddae9e2bfe1349215257052724cbdb0c6e7153186f66f4baaac2010eaf56fbff0e6a360a0710eee7af5e5c8

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7adf7881385be17a301bfb9495835714

            SHA1

            69a43c9fabfe64bee1af27c4ee5cf016b0e94786

            SHA256

            41981ec0ffb18bc21fced503a51435afb972ce26dc7be9f2aa6b6e82f791c0c5

            SHA512

            a680824c63d0e703913a1bb3b87d28afe966c174fddae9e2bfe1349215257052724cbdb0c6e7153186f66f4baaac2010eaf56fbff0e6a360a0710eee7af5e5c8

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7adf7881385be17a301bfb9495835714

            SHA1

            69a43c9fabfe64bee1af27c4ee5cf016b0e94786

            SHA256

            41981ec0ffb18bc21fced503a51435afb972ce26dc7be9f2aa6b6e82f791c0c5

            SHA512

            a680824c63d0e703913a1bb3b87d28afe966c174fddae9e2bfe1349215257052724cbdb0c6e7153186f66f4baaac2010eaf56fbff0e6a360a0710eee7af5e5c8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ef37e470d076607dac67b396af018ec7

            SHA1

            3cee3d8758d7fafb042fa7460c22a307f85fda3a

            SHA256

            c5c8b4e32a5d52057f1108c928760e0f4c0e2314c7f9afbc56cca221dfb425df

            SHA512

            31f5246b72fc7951a77623904782f92a5dac7ad7e0bff62f14c9b7f62ac429aa71a6d966a8e901a1575e0f67781914ab12ed2c5c093b436f9681ebcc75127837

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ef37e470d076607dac67b396af018ec7

            SHA1

            3cee3d8758d7fafb042fa7460c22a307f85fda3a

            SHA256

            c5c8b4e32a5d52057f1108c928760e0f4c0e2314c7f9afbc56cca221dfb425df

            SHA512

            31f5246b72fc7951a77623904782f92a5dac7ad7e0bff62f14c9b7f62ac429aa71a6d966a8e901a1575e0f67781914ab12ed2c5c093b436f9681ebcc75127837

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ef37e470d076607dac67b396af018ec7

            SHA1

            3cee3d8758d7fafb042fa7460c22a307f85fda3a

            SHA256

            c5c8b4e32a5d52057f1108c928760e0f4c0e2314c7f9afbc56cca221dfb425df

            SHA512

            31f5246b72fc7951a77623904782f92a5dac7ad7e0bff62f14c9b7f62ac429aa71a6d966a8e901a1575e0f67781914ab12ed2c5c093b436f9681ebcc75127837

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c2569e91fff49a5a50fc3b1c4b7084de

            SHA1

            9db2030adf379caa51b496a0299ab53a22204826

            SHA256

            73d339e37692739c63395ba9bbbad676ce895c7dad94f15278a5e989ab0d366e

            SHA512

            83c7033134304bb3962711ec1eeb4a1ed9f1370b28f1f196ae13e8b9f17963dc0a1bed2263e6817640b88bd6b07f9418d3aa811a04712bb1af65ea0eb2c384e8

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c2569e91fff49a5a50fc3b1c4b7084de

            SHA1

            9db2030adf379caa51b496a0299ab53a22204826

            SHA256

            73d339e37692739c63395ba9bbbad676ce895c7dad94f15278a5e989ab0d366e

            SHA512

            83c7033134304bb3962711ec1eeb4a1ed9f1370b28f1f196ae13e8b9f17963dc0a1bed2263e6817640b88bd6b07f9418d3aa811a04712bb1af65ea0eb2c384e8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f8f0dd7a0139199f3a816fdbf6ec90ec

            SHA1

            ef1aecf5028481bd4ec652f64737dae4cda4e59c

            SHA256

            83b4d527fb432be1185b821dec857637399d5202d8e43350a34666bac3c7f056

            SHA512

            09e1c1f4afcf76b21b9c47eb0e1b90cdb3e6e994008601e85ce105002ebdb5a392b2b8cabcf9659ecad4ec066369e2243e032ebebdbf7d0d78e6066d7c2d7a85

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f8f0dd7a0139199f3a816fdbf6ec90ec

            SHA1

            ef1aecf5028481bd4ec652f64737dae4cda4e59c

            SHA256

            83b4d527fb432be1185b821dec857637399d5202d8e43350a34666bac3c7f056

            SHA512

            09e1c1f4afcf76b21b9c47eb0e1b90cdb3e6e994008601e85ce105002ebdb5a392b2b8cabcf9659ecad4ec066369e2243e032ebebdbf7d0d78e6066d7c2d7a85

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            f8f0dd7a0139199f3a816fdbf6ec90ec

            SHA1

            ef1aecf5028481bd4ec652f64737dae4cda4e59c

            SHA256

            83b4d527fb432be1185b821dec857637399d5202d8e43350a34666bac3c7f056

            SHA512

            09e1c1f4afcf76b21b9c47eb0e1b90cdb3e6e994008601e85ce105002ebdb5a392b2b8cabcf9659ecad4ec066369e2243e032ebebdbf7d0d78e6066d7c2d7a85

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            31cfe65c16a99674c5feb637ca4b8d1a

            SHA1

            429fec9549494814c2685459e75f627da192d4e2

            SHA256

            fa96b34d1651a77a419a86d8b87a85aa8d6d4f0cfc5d1cc34b80b79ee0da0f15

            SHA512

            4f7b420d20b7b74b26813b253fd09e9aa5e4d6a574ced8fb05670c9540f5137161baf0a2776007e32691c01dfbde53f52c65da8d6240a53b672f3840dcf42366

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            31cfe65c16a99674c5feb637ca4b8d1a

            SHA1

            429fec9549494814c2685459e75f627da192d4e2

            SHA256

            fa96b34d1651a77a419a86d8b87a85aa8d6d4f0cfc5d1cc34b80b79ee0da0f15

            SHA512

            4f7b420d20b7b74b26813b253fd09e9aa5e4d6a574ced8fb05670c9540f5137161baf0a2776007e32691c01dfbde53f52c65da8d6240a53b672f3840dcf42366

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            31cfe65c16a99674c5feb637ca4b8d1a

            SHA1

            429fec9549494814c2685459e75f627da192d4e2

            SHA256

            fa96b34d1651a77a419a86d8b87a85aa8d6d4f0cfc5d1cc34b80b79ee0da0f15

            SHA512

            4f7b420d20b7b74b26813b253fd09e9aa5e4d6a574ced8fb05670c9540f5137161baf0a2776007e32691c01dfbde53f52c65da8d6240a53b672f3840dcf42366

          • memory/1632-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1632-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1632-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1824-143-0x0000000000000000-mapping.dmp

          • memory/1908-159-0x0000000000000000-mapping.dmp

          • memory/2200-166-0x0000000000000000-mapping.dmp

          • memory/2860-138-0x0000000000000000-mapping.dmp

          • memory/2976-167-0x0000000000000000-mapping.dmp

          • memory/3496-160-0x0000000000000000-mapping.dmp

          • memory/3500-154-0x0000000000000000-mapping.dmp

          • memory/4132-136-0x0000000000000000-mapping.dmp

          • memory/4228-142-0x0000000000000000-mapping.dmp

          • memory/4800-141-0x0000000000000000-mapping.dmp

          • memory/5012-148-0x0000000000000000-mapping.dmp