Analysis

  • max time kernel
    91s
  • max time network
    152s
  • 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 10:15

General

  • Target

    b32a37375fa5778c817d048a6f1287a03197872ef7d6e444a6cf46de8a477499.exe

  • Size

    602KB

  • MD5

    c6d9fa1140b6809ed70f429d9ca87087

  • SHA1

    1c53f02dca5a54a87d167a052ca2e0d5ad51d678

  • SHA256

    b32a37375fa5778c817d048a6f1287a03197872ef7d6e444a6cf46de8a477499

  • SHA512

    50f18ea8bc83a0bac2f0155b374ea158ac8ae7afea4cd5c3fe13dee141602c007faa309eb9a2c2cf24307cc2041ac694b47ce5177ae6408e7752daf1cd52782d

  • SSDEEP

    12288:7Iny5DYT76p44tD/pQKLxM+Yd4cS51EnxXkaQ1ZHR/3UB:DUTep44l/phBtb5wa9k

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\b32a37375fa5778c817d048a6f1287a03197872ef7d6e444a6cf46de8a477499.exe
    "C:\Users\Admin\AppData\Local\Temp\b32a37375fa5778c817d048a6f1287a03197872ef7d6e444a6cf46de8a477499.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:4740
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4856
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:5056
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4988
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1376
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1452
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:552
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4060
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:5016
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3512
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1520
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2452
          • 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:3720
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2628

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsa157E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ef7c4033c8a45c06d774f8f788d461ab

            SHA1

            e216dbeeb842a2ff79be8853231b946b07cec995

            SHA256

            c6f45f3b1caef16cc2653da8001291c3190432143506bce962f4f3266dfb81a0

            SHA512

            0cbd90c1ec8fd6d7e489e8ec87ecc08e36b3151ed1de5d231a483ae7a73bfd4d690a8368e37f25316dd13143119d685f86d2e8d1a736206c8b7948ae9263481e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ef7c4033c8a45c06d774f8f788d461ab

            SHA1

            e216dbeeb842a2ff79be8853231b946b07cec995

            SHA256

            c6f45f3b1caef16cc2653da8001291c3190432143506bce962f4f3266dfb81a0

            SHA512

            0cbd90c1ec8fd6d7e489e8ec87ecc08e36b3151ed1de5d231a483ae7a73bfd4d690a8368e37f25316dd13143119d685f86d2e8d1a736206c8b7948ae9263481e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ef7c4033c8a45c06d774f8f788d461ab

            SHA1

            e216dbeeb842a2ff79be8853231b946b07cec995

            SHA256

            c6f45f3b1caef16cc2653da8001291c3190432143506bce962f4f3266dfb81a0

            SHA512

            0cbd90c1ec8fd6d7e489e8ec87ecc08e36b3151ed1de5d231a483ae7a73bfd4d690a8368e37f25316dd13143119d685f86d2e8d1a736206c8b7948ae9263481e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ef7c4033c8a45c06d774f8f788d461ab

            SHA1

            e216dbeeb842a2ff79be8853231b946b07cec995

            SHA256

            c6f45f3b1caef16cc2653da8001291c3190432143506bce962f4f3266dfb81a0

            SHA512

            0cbd90c1ec8fd6d7e489e8ec87ecc08e36b3151ed1de5d231a483ae7a73bfd4d690a8368e37f25316dd13143119d685f86d2e8d1a736206c8b7948ae9263481e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ffc79cf2c16e2cdd124353ec3ea20b3f

            SHA1

            a1be6f476cb1e43e0c20d254f81c715e2cec135a

            SHA256

            4c9dd90a6cfa7e74da89858f401a400dd4d0ab5330aa7079cc1da40ec400b109

            SHA512

            0239d9c12bc96b484923677f60cfa2a6de265fd5cd5f49f270d03cd65105d6c6b8af29314eb6b2041aa3007cd4247b7bbf788e701b28a7d28633868f28dba54c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ffc79cf2c16e2cdd124353ec3ea20b3f

            SHA1

            a1be6f476cb1e43e0c20d254f81c715e2cec135a

            SHA256

            4c9dd90a6cfa7e74da89858f401a400dd4d0ab5330aa7079cc1da40ec400b109

            SHA512

            0239d9c12bc96b484923677f60cfa2a6de265fd5cd5f49f270d03cd65105d6c6b8af29314eb6b2041aa3007cd4247b7bbf788e701b28a7d28633868f28dba54c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ffc79cf2c16e2cdd124353ec3ea20b3f

            SHA1

            a1be6f476cb1e43e0c20d254f81c715e2cec135a

            SHA256

            4c9dd90a6cfa7e74da89858f401a400dd4d0ab5330aa7079cc1da40ec400b109

            SHA512

            0239d9c12bc96b484923677f60cfa2a6de265fd5cd5f49f270d03cd65105d6c6b8af29314eb6b2041aa3007cd4247b7bbf788e701b28a7d28633868f28dba54c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            60182f2f112211fb73f7ef5ddd1b0870

            SHA1

            69f61899549e0430313df181710d3b2c0ca6234a

            SHA256

            e5945714c4a5d9230c0ef4f78f1ada56a8eb41f47eb2f9d061f27a6e48fd2c14

            SHA512

            172779c4b64936205d3722c0531f73624dcc3373bf78bf3d208e7af42bc1ada2b38da1cf5483b1402f2803cffb758a7ee46ed399766f94915983f02e897925af

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            60182f2f112211fb73f7ef5ddd1b0870

            SHA1

            69f61899549e0430313df181710d3b2c0ca6234a

            SHA256

            e5945714c4a5d9230c0ef4f78f1ada56a8eb41f47eb2f9d061f27a6e48fd2c14

            SHA512

            172779c4b64936205d3722c0531f73624dcc3373bf78bf3d208e7af42bc1ada2b38da1cf5483b1402f2803cffb758a7ee46ed399766f94915983f02e897925af

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca536c6452ecf8deb2697dc43dd41183

            SHA1

            8fcc65d5336714102a94cb9cd0669ca85ea6ea87

            SHA256

            65728da08f207da9f6b64fc34a2edb6af5b73b6836ed42f5d1bbfb454c9bc0ea

            SHA512

            6387a5cbf6874b20260ed4b095aa1fba826440cb81398fd3965bae12c41553f5d8bc78c0bdabc5f55b789b7204e8ab418e3041aa40572058fd8491ca2f1dfcdb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca536c6452ecf8deb2697dc43dd41183

            SHA1

            8fcc65d5336714102a94cb9cd0669ca85ea6ea87

            SHA256

            65728da08f207da9f6b64fc34a2edb6af5b73b6836ed42f5d1bbfb454c9bc0ea

            SHA512

            6387a5cbf6874b20260ed4b095aa1fba826440cb81398fd3965bae12c41553f5d8bc78c0bdabc5f55b789b7204e8ab418e3041aa40572058fd8491ca2f1dfcdb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca536c6452ecf8deb2697dc43dd41183

            SHA1

            8fcc65d5336714102a94cb9cd0669ca85ea6ea87

            SHA256

            65728da08f207da9f6b64fc34a2edb6af5b73b6836ed42f5d1bbfb454c9bc0ea

            SHA512

            6387a5cbf6874b20260ed4b095aa1fba826440cb81398fd3965bae12c41553f5d8bc78c0bdabc5f55b789b7204e8ab418e3041aa40572058fd8491ca2f1dfcdb

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e8b0c0a406788797519c13220236be4a

            SHA1

            42748230ff82495eb216a4d37b6d2129fbd175da

            SHA256

            1886d259324d9e1bad573a9060b345b04aa73dde9ceef8754c176b45836aa45b

            SHA512

            f3ca9f415dbe7af88cd8efe9e542c0ca6f2cd556376702abd3af8e87dc12f3f9db08dc30dfe470aab2f3d4a3ba16ba12fa830046008f6690b65cef7bd80c4c9b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e8b0c0a406788797519c13220236be4a

            SHA1

            42748230ff82495eb216a4d37b6d2129fbd175da

            SHA256

            1886d259324d9e1bad573a9060b345b04aa73dde9ceef8754c176b45836aa45b

            SHA512

            f3ca9f415dbe7af88cd8efe9e542c0ca6f2cd556376702abd3af8e87dc12f3f9db08dc30dfe470aab2f3d4a3ba16ba12fa830046008f6690b65cef7bd80c4c9b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e8b0c0a406788797519c13220236be4a

            SHA1

            42748230ff82495eb216a4d37b6d2129fbd175da

            SHA256

            1886d259324d9e1bad573a9060b345b04aa73dde9ceef8754c176b45836aa45b

            SHA512

            f3ca9f415dbe7af88cd8efe9e542c0ca6f2cd556376702abd3af8e87dc12f3f9db08dc30dfe470aab2f3d4a3ba16ba12fa830046008f6690b65cef7bd80c4c9b

          • memory/552-147-0x0000000000000000-mapping.dmp

          • memory/1376-141-0x0000000000000000-mapping.dmp

          • memory/1452-142-0x0000000000000000-mapping.dmp

          • memory/1520-166-0x0000000000000000-mapping.dmp

          • memory/2452-167-0x0000000000000000-mapping.dmp

          • memory/3512-159-0x0000000000000000-mapping.dmp

          • memory/4060-153-0x0000000000000000-mapping.dmp

          • memory/4740-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4740-163-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4740-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4856-136-0x0000000000000000-mapping.dmp

          • memory/4988-140-0x0000000000000000-mapping.dmp

          • memory/5016-158-0x0000000000000000-mapping.dmp

          • memory/5056-137-0x0000000000000000-mapping.dmp