Analysis

  • max time kernel
    153s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:19

General

  • Target

    904526c3c98c78cf2d559fd2b3b7981e29cc15eabda31b6c143bc8bf87a944a6.exe

  • Size

    603KB

  • MD5

    d5abea1da1f967cc66e368ee75d64423

  • SHA1

    790148337a06da8a774957fff5bcf85b6cc39f21

  • SHA256

    904526c3c98c78cf2d559fd2b3b7981e29cc15eabda31b6c143bc8bf87a944a6

  • SHA512

    33d24ed6e928c4d2b156316419c3d7a7394e3b57c3f640e877ed023f4eb83ee68fa9a170404deeeb769fb76ce6ac53675047cee3da1398ca0fb4386767a3d0fa

  • SSDEEP

    12288:nIny5DYTC3KerhCtXHTOYMW2XDdazY0sTQnwmWeUPQvwBP:vUTC6uYRTO7XkYnTkXJUPQvwx

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\904526c3c98c78cf2d559fd2b3b7981e29cc15eabda31b6c143bc8bf87a944a6.exe
    "C:\Users\Admin\AppData\Local\Temp\904526c3c98c78cf2d559fd2b3b7981e29cc15eabda31b6c143bc8bf87a944a6.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:2232
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3788
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2052
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4764
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4800
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:944
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4992
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3556
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4984
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2136
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2132
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1096
          • 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:772
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1888

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn40A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bea6f520d1364f60a954274e900a89eb

            SHA1

            3368177543c4d440604552c23e9450667d2d6486

            SHA256

            403dd633c3c4d92dacdf9baa6001a240e9f7369d0026758f0de30daa07b5b451

            SHA512

            41c95c59217dbfad407f3e33cf88903bea18a05bd19bf540e19489dbed6da43f8b0c11f7a8e14a7e30a93bd9657ea6f618c57f426ed5c3712f72993b323f20ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bea6f520d1364f60a954274e900a89eb

            SHA1

            3368177543c4d440604552c23e9450667d2d6486

            SHA256

            403dd633c3c4d92dacdf9baa6001a240e9f7369d0026758f0de30daa07b5b451

            SHA512

            41c95c59217dbfad407f3e33cf88903bea18a05bd19bf540e19489dbed6da43f8b0c11f7a8e14a7e30a93bd9657ea6f618c57f426ed5c3712f72993b323f20ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bea6f520d1364f60a954274e900a89eb

            SHA1

            3368177543c4d440604552c23e9450667d2d6486

            SHA256

            403dd633c3c4d92dacdf9baa6001a240e9f7369d0026758f0de30daa07b5b451

            SHA512

            41c95c59217dbfad407f3e33cf88903bea18a05bd19bf540e19489dbed6da43f8b0c11f7a8e14a7e30a93bd9657ea6f618c57f426ed5c3712f72993b323f20ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bea6f520d1364f60a954274e900a89eb

            SHA1

            3368177543c4d440604552c23e9450667d2d6486

            SHA256

            403dd633c3c4d92dacdf9baa6001a240e9f7369d0026758f0de30daa07b5b451

            SHA512

            41c95c59217dbfad407f3e33cf88903bea18a05bd19bf540e19489dbed6da43f8b0c11f7a8e14a7e30a93bd9657ea6f618c57f426ed5c3712f72993b323f20ff

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            efdac64f74d98397302a50d61ba6af40

            SHA1

            8bedb5fea08e9d6266d09716fa8c91b7eb22e5d3

            SHA256

            df1e87b55a0c96eb8e7a401c4c223950901dddcdb3af632ad4da0b227cb02783

            SHA512

            8651505333fa8598ee0f4993ab03036d28a91ee2d458fdd142cdc7482441dcac53a134ecc22413c6dadc6ac6c8d675eaf640bb26943253cbc63e842cb1c47f82

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            efdac64f74d98397302a50d61ba6af40

            SHA1

            8bedb5fea08e9d6266d09716fa8c91b7eb22e5d3

            SHA256

            df1e87b55a0c96eb8e7a401c4c223950901dddcdb3af632ad4da0b227cb02783

            SHA512

            8651505333fa8598ee0f4993ab03036d28a91ee2d458fdd142cdc7482441dcac53a134ecc22413c6dadc6ac6c8d675eaf640bb26943253cbc63e842cb1c47f82

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            efdac64f74d98397302a50d61ba6af40

            SHA1

            8bedb5fea08e9d6266d09716fa8c91b7eb22e5d3

            SHA256

            df1e87b55a0c96eb8e7a401c4c223950901dddcdb3af632ad4da0b227cb02783

            SHA512

            8651505333fa8598ee0f4993ab03036d28a91ee2d458fdd142cdc7482441dcac53a134ecc22413c6dadc6ac6c8d675eaf640bb26943253cbc63e842cb1c47f82

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a29d66d2e4a3855ac910c319412ef5f1

            SHA1

            7592d1ff2daa9b3a95fec65ea4af977f846e8a68

            SHA256

            c11fa296ee8a4b171626e4572b1dc9a59470803c96a3e5e5236a543c67b67e32

            SHA512

            1e573eb92682377cb130b1dbed146868c3e3dec28172fdf600d118b616ac5116a21a3a21e3352599ab020a774d7c563fa136d23713d15702c8f92ad5937c5eb7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a29d66d2e4a3855ac910c319412ef5f1

            SHA1

            7592d1ff2daa9b3a95fec65ea4af977f846e8a68

            SHA256

            c11fa296ee8a4b171626e4572b1dc9a59470803c96a3e5e5236a543c67b67e32

            SHA512

            1e573eb92682377cb130b1dbed146868c3e3dec28172fdf600d118b616ac5116a21a3a21e3352599ab020a774d7c563fa136d23713d15702c8f92ad5937c5eb7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c002dc3a79e13ab345ade706e7d74cee

            SHA1

            893def016ea8dcbb43b8b923141e65579d6c88a4

            SHA256

            817abc204fac869d194d91b7a8b774d64c4c8d3bb3424db8dd4c9340b01b8cc2

            SHA512

            6d84345b1a07ab16f93275a2b12009819e6c2d07d85fa32389647c5c768c9a11a28fa7d0280b00c5b4da07677a7e16a9322ec3107396ba2e9a7a019dcf9f4ae0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c002dc3a79e13ab345ade706e7d74cee

            SHA1

            893def016ea8dcbb43b8b923141e65579d6c88a4

            SHA256

            817abc204fac869d194d91b7a8b774d64c4c8d3bb3424db8dd4c9340b01b8cc2

            SHA512

            6d84345b1a07ab16f93275a2b12009819e6c2d07d85fa32389647c5c768c9a11a28fa7d0280b00c5b4da07677a7e16a9322ec3107396ba2e9a7a019dcf9f4ae0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c002dc3a79e13ab345ade706e7d74cee

            SHA1

            893def016ea8dcbb43b8b923141e65579d6c88a4

            SHA256

            817abc204fac869d194d91b7a8b774d64c4c8d3bb3424db8dd4c9340b01b8cc2

            SHA512

            6d84345b1a07ab16f93275a2b12009819e6c2d07d85fa32389647c5c768c9a11a28fa7d0280b00c5b4da07677a7e16a9322ec3107396ba2e9a7a019dcf9f4ae0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            638ed2f64527259a925c5b6b8f417eba

            SHA1

            c7f74d377eefdb32954c0b1de6860abafb2006a4

            SHA256

            ff4043e61a21a5082aea37da40a2ed017b7402286087c8add84b461f3af783cd

            SHA512

            d7b124223bc49f1f7866aa8521c44e0771ff14e081e6b495a530cf34ab78328d5287a77c390e9a3187a735e41ffcec23c0094707b54efcff98a89abdb48c814e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            638ed2f64527259a925c5b6b8f417eba

            SHA1

            c7f74d377eefdb32954c0b1de6860abafb2006a4

            SHA256

            ff4043e61a21a5082aea37da40a2ed017b7402286087c8add84b461f3af783cd

            SHA512

            d7b124223bc49f1f7866aa8521c44e0771ff14e081e6b495a530cf34ab78328d5287a77c390e9a3187a735e41ffcec23c0094707b54efcff98a89abdb48c814e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            638ed2f64527259a925c5b6b8f417eba

            SHA1

            c7f74d377eefdb32954c0b1de6860abafb2006a4

            SHA256

            ff4043e61a21a5082aea37da40a2ed017b7402286087c8add84b461f3af783cd

            SHA512

            d7b124223bc49f1f7866aa8521c44e0771ff14e081e6b495a530cf34ab78328d5287a77c390e9a3187a735e41ffcec23c0094707b54efcff98a89abdb48c814e

          • memory/944-142-0x0000000000000000-mapping.dmp

          • memory/1096-166-0x0000000000000000-mapping.dmp

          • memory/2052-137-0x0000000000000000-mapping.dmp

          • memory/2132-165-0x0000000000000000-mapping.dmp

          • memory/2136-159-0x0000000000000000-mapping.dmp

          • memory/2232-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2232-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3556-153-0x0000000000000000-mapping.dmp

          • memory/3788-136-0x0000000000000000-mapping.dmp

          • memory/4764-140-0x0000000000000000-mapping.dmp

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

          • memory/4984-158-0x0000000000000000-mapping.dmp

          • memory/4992-147-0x0000000000000000-mapping.dmp