Analysis

  • max time kernel
    186s
  • max time network
    183s
  • 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 10:21

General

  • Target

    81e5be234f9fcf04f668d687811c3423fd4dd8bdd2bc96b646065feee6e4ef05.exe

  • Size

    603KB

  • MD5

    de50336e35608d5576255f656d44ea5a

  • SHA1

    7f2ce12a9df68dfc6d274397cd178b66d6c10713

  • SHA256

    81e5be234f9fcf04f668d687811c3423fd4dd8bdd2bc96b646065feee6e4ef05

  • SHA512

    106fa500af07907bf36c4dd39eb0d50931902f833d048a621669bb19a1798406a89f0256034e8af427762ac76b15ead8ae55020dc4ee3562eb807e4e9c223a04

  • SSDEEP

    12288:EIny5DYTEzcqLzo45DixJwUC4r6yFxdh9GyWuaG:iUTGXn71ixJfrDGyWu

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\81e5be234f9fcf04f668d687811c3423fd4dd8bdd2bc96b646065feee6e4ef05.exe
    "C:\Users\Admin\AppData\Local\Temp\81e5be234f9fcf04f668d687811c3423fd4dd8bdd2bc96b646065feee6e4ef05.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:788
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1676
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2792
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4280
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1944
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:792
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4284
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1616
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2780
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4300
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4768
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4040
          • 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:2508
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1836

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsp2D5B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            be658068a82645ca917eaa2fab816c92

            SHA1

            9fe573244dda4a9f1ded1ac68fadc225e82251c6

            SHA256

            34e06e21a625327212bfd07f2f7571541fd2ac09b041da66fbac8d431640c667

            SHA512

            bb49ea237b3a74fd6485a352846fd77e5877a757c7c2ec6326c43c27ba8429c4dbe8c9a972233b52493fa7fae6d3900b2a8e786222e4ab94845a0f2f16ca01c7

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            be658068a82645ca917eaa2fab816c92

            SHA1

            9fe573244dda4a9f1ded1ac68fadc225e82251c6

            SHA256

            34e06e21a625327212bfd07f2f7571541fd2ac09b041da66fbac8d431640c667

            SHA512

            bb49ea237b3a74fd6485a352846fd77e5877a757c7c2ec6326c43c27ba8429c4dbe8c9a972233b52493fa7fae6d3900b2a8e786222e4ab94845a0f2f16ca01c7

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            be658068a82645ca917eaa2fab816c92

            SHA1

            9fe573244dda4a9f1ded1ac68fadc225e82251c6

            SHA256

            34e06e21a625327212bfd07f2f7571541fd2ac09b041da66fbac8d431640c667

            SHA512

            bb49ea237b3a74fd6485a352846fd77e5877a757c7c2ec6326c43c27ba8429c4dbe8c9a972233b52493fa7fae6d3900b2a8e786222e4ab94845a0f2f16ca01c7

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            be658068a82645ca917eaa2fab816c92

            SHA1

            9fe573244dda4a9f1ded1ac68fadc225e82251c6

            SHA256

            34e06e21a625327212bfd07f2f7571541fd2ac09b041da66fbac8d431640c667

            SHA512

            bb49ea237b3a74fd6485a352846fd77e5877a757c7c2ec6326c43c27ba8429c4dbe8c9a972233b52493fa7fae6d3900b2a8e786222e4ab94845a0f2f16ca01c7

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            79789a36cbaab7b2126d475a0be0f1a0

            SHA1

            8d90556e7ef0239623b9bbc71f5c83809ee95aa5

            SHA256

            b521ca9a1eaaa0fb8d0cc609d8d755237ba52bcdc5e87fdc85f81ef4d5e99dd0

            SHA512

            220d6c2b9bb5c5d0b00030b05bc1f4947469418a605feb2c264d1a7e7af139bce0afafc300fb318aefe6defefb7e7a617274309569e6c5e0dfa7f10df2ab02ac

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            79789a36cbaab7b2126d475a0be0f1a0

            SHA1

            8d90556e7ef0239623b9bbc71f5c83809ee95aa5

            SHA256

            b521ca9a1eaaa0fb8d0cc609d8d755237ba52bcdc5e87fdc85f81ef4d5e99dd0

            SHA512

            220d6c2b9bb5c5d0b00030b05bc1f4947469418a605feb2c264d1a7e7af139bce0afafc300fb318aefe6defefb7e7a617274309569e6c5e0dfa7f10df2ab02ac

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            79789a36cbaab7b2126d475a0be0f1a0

            SHA1

            8d90556e7ef0239623b9bbc71f5c83809ee95aa5

            SHA256

            b521ca9a1eaaa0fb8d0cc609d8d755237ba52bcdc5e87fdc85f81ef4d5e99dd0

            SHA512

            220d6c2b9bb5c5d0b00030b05bc1f4947469418a605feb2c264d1a7e7af139bce0afafc300fb318aefe6defefb7e7a617274309569e6c5e0dfa7f10df2ab02ac

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f1426092646952fac43466e2b2510d56

            SHA1

            085aff8c6e25c80911373efce14108d26c2fadd5

            SHA256

            7afea3055135ed1d52aa7974f4ac595203b54526d25e0092af35d2fe851a39bd

            SHA512

            cafa045e579ce51dd1fb217a0797a243ea9379bb96c98d205995ab425722c6c00f908c33d12bbb742792142e1ad33cae31e84cc8b6c94b3466155a58582a7668

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f1426092646952fac43466e2b2510d56

            SHA1

            085aff8c6e25c80911373efce14108d26c2fadd5

            SHA256

            7afea3055135ed1d52aa7974f4ac595203b54526d25e0092af35d2fe851a39bd

            SHA512

            cafa045e579ce51dd1fb217a0797a243ea9379bb96c98d205995ab425722c6c00f908c33d12bbb742792142e1ad33cae31e84cc8b6c94b3466155a58582a7668

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            797185976520d399ea17b46225bdd034

            SHA1

            64f357363737e52e6a95c81bcb94f60517c25c8a

            SHA256

            e6e4e06f3164a4bf8187eaf5264946eb834faa11ad86284e54b805b9c308417a

            SHA512

            4737d763c5d92351d8823e586beba5338e9321b0c75916c84e6cbfab3fddc05c49850ab7e55ba0d645c6a6adf78e169537fd26b97fd90ad9c6928f0e8819b43c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            797185976520d399ea17b46225bdd034

            SHA1

            64f357363737e52e6a95c81bcb94f60517c25c8a

            SHA256

            e6e4e06f3164a4bf8187eaf5264946eb834faa11ad86284e54b805b9c308417a

            SHA512

            4737d763c5d92351d8823e586beba5338e9321b0c75916c84e6cbfab3fddc05c49850ab7e55ba0d645c6a6adf78e169537fd26b97fd90ad9c6928f0e8819b43c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            797185976520d399ea17b46225bdd034

            SHA1

            64f357363737e52e6a95c81bcb94f60517c25c8a

            SHA256

            e6e4e06f3164a4bf8187eaf5264946eb834faa11ad86284e54b805b9c308417a

            SHA512

            4737d763c5d92351d8823e586beba5338e9321b0c75916c84e6cbfab3fddc05c49850ab7e55ba0d645c6a6adf78e169537fd26b97fd90ad9c6928f0e8819b43c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            383d0a560504ea05957b687dc2c96163

            SHA1

            5fe4a1a8c5cb66abf0715a19cb88234727d594d6

            SHA256

            ef2b515747ee9b2b5e7c864b8368cf8efdaa7028e3270e79a284d5f6b16b40be

            SHA512

            5c590097177e66e20a9adbc4808d259efbc071cf1df03750f3d78459ef072fb0ba70a2b81980c21fcaf9e2c1fbb9c761f71084855d5551bb92b6e92d5c3400a8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            383d0a560504ea05957b687dc2c96163

            SHA1

            5fe4a1a8c5cb66abf0715a19cb88234727d594d6

            SHA256

            ef2b515747ee9b2b5e7c864b8368cf8efdaa7028e3270e79a284d5f6b16b40be

            SHA512

            5c590097177e66e20a9adbc4808d259efbc071cf1df03750f3d78459ef072fb0ba70a2b81980c21fcaf9e2c1fbb9c761f71084855d5551bb92b6e92d5c3400a8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            383d0a560504ea05957b687dc2c96163

            SHA1

            5fe4a1a8c5cb66abf0715a19cb88234727d594d6

            SHA256

            ef2b515747ee9b2b5e7c864b8368cf8efdaa7028e3270e79a284d5f6b16b40be

            SHA512

            5c590097177e66e20a9adbc4808d259efbc071cf1df03750f3d78459ef072fb0ba70a2b81980c21fcaf9e2c1fbb9c761f71084855d5551bb92b6e92d5c3400a8

          • memory/788-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/788-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/788-163-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/792-142-0x0000000000000000-mapping.dmp

          • memory/1616-153-0x0000000000000000-mapping.dmp

          • memory/1676-136-0x0000000000000000-mapping.dmp

          • memory/1944-141-0x0000000000000000-mapping.dmp

          • memory/2780-158-0x0000000000000000-mapping.dmp

          • memory/2792-137-0x0000000000000000-mapping.dmp

          • memory/4040-167-0x0000000000000000-mapping.dmp

          • memory/4280-140-0x0000000000000000-mapping.dmp

          • memory/4284-147-0x0000000000000000-mapping.dmp

          • memory/4300-159-0x0000000000000000-mapping.dmp

          • memory/4768-166-0x0000000000000000-mapping.dmp