Analysis

  • max time kernel
    91s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:20

General

  • Target

    8bdf613f687bf295312d17c0573e4e5e6e65e2b07e06c0d5d01347144b7196dc.exe

  • Size

    601KB

  • MD5

    fd86c0c0a59f4779a4a2e9bdf85e9375

  • SHA1

    0c71d434ce200c6353b538a3e5124b881dc82376

  • SHA256

    8bdf613f687bf295312d17c0573e4e5e6e65e2b07e06c0d5d01347144b7196dc

  • SHA512

    199ecf1b9bd9bdadb10fa1e1a25c327eda0bf166909db2b4429f6f52e608569749a000d4fb98d98b7805afb2bbae08b607f4916e4ba0edd7e2997ab009bb067e

  • SSDEEP

    12288:7Iny5DYTfjylUBrGNTkTnQ4uOAYB+4jBZ3mdzrGSoXt:DUTfvBrIQTnKO5Dozi

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\8bdf613f687bf295312d17c0573e4e5e6e65e2b07e06c0d5d01347144b7196dc.exe
    "C:\Users\Admin\AppData\Local\Temp\8bdf613f687bf295312d17c0573e4e5e6e65e2b07e06c0d5d01347144b7196dc.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:4752
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4532
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3832
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3568
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2412
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2408
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1164
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:424
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4708
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1688
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4360
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:5056
          • 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:3712
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:932

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsiB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9a53316bee3d317ebcb572d2fabee8c1

            SHA1

            72a6fcf605c435d80519e782eb2bfffbca36bae1

            SHA256

            24a7c2156d80219f09c2fec5cc603284bda356b92b9efc3c6d794af9d96f6b03

            SHA512

            1b78530651213fa32a1fd6acefcb02f426304335069cd82468786cac37ddf36d942b6a1acf430acf2674b09246d1c67acc95070f5c349d922e8fad31898e1ff7

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9a53316bee3d317ebcb572d2fabee8c1

            SHA1

            72a6fcf605c435d80519e782eb2bfffbca36bae1

            SHA256

            24a7c2156d80219f09c2fec5cc603284bda356b92b9efc3c6d794af9d96f6b03

            SHA512

            1b78530651213fa32a1fd6acefcb02f426304335069cd82468786cac37ddf36d942b6a1acf430acf2674b09246d1c67acc95070f5c349d922e8fad31898e1ff7

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9a53316bee3d317ebcb572d2fabee8c1

            SHA1

            72a6fcf605c435d80519e782eb2bfffbca36bae1

            SHA256

            24a7c2156d80219f09c2fec5cc603284bda356b92b9efc3c6d794af9d96f6b03

            SHA512

            1b78530651213fa32a1fd6acefcb02f426304335069cd82468786cac37ddf36d942b6a1acf430acf2674b09246d1c67acc95070f5c349d922e8fad31898e1ff7

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9a53316bee3d317ebcb572d2fabee8c1

            SHA1

            72a6fcf605c435d80519e782eb2bfffbca36bae1

            SHA256

            24a7c2156d80219f09c2fec5cc603284bda356b92b9efc3c6d794af9d96f6b03

            SHA512

            1b78530651213fa32a1fd6acefcb02f426304335069cd82468786cac37ddf36d942b6a1acf430acf2674b09246d1c67acc95070f5c349d922e8fad31898e1ff7

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            586725c50c2474b19ce8026ea91e4a30

            SHA1

            3bc0bf9f2e7c8ed1450ccdd52b29043fd24f941c

            SHA256

            c6a5a969b2c9b69c82a0711fd0f526560aaff6bd34f47f1c868a2a444845a1e5

            SHA512

            463d359aeb01a011be438e11aa8f5d1a2ea0481db31ff406b6bd835c3ef55aee572e19ad430d8b31459631931dcf984c3dd604715bc33a842b6a85cf84a9d953

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            586725c50c2474b19ce8026ea91e4a30

            SHA1

            3bc0bf9f2e7c8ed1450ccdd52b29043fd24f941c

            SHA256

            c6a5a969b2c9b69c82a0711fd0f526560aaff6bd34f47f1c868a2a444845a1e5

            SHA512

            463d359aeb01a011be438e11aa8f5d1a2ea0481db31ff406b6bd835c3ef55aee572e19ad430d8b31459631931dcf984c3dd604715bc33a842b6a85cf84a9d953

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            586725c50c2474b19ce8026ea91e4a30

            SHA1

            3bc0bf9f2e7c8ed1450ccdd52b29043fd24f941c

            SHA256

            c6a5a969b2c9b69c82a0711fd0f526560aaff6bd34f47f1c868a2a444845a1e5

            SHA512

            463d359aeb01a011be438e11aa8f5d1a2ea0481db31ff406b6bd835c3ef55aee572e19ad430d8b31459631931dcf984c3dd604715bc33a842b6a85cf84a9d953

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            92aa32dc2e58bc9b857dfa4e4a3e38dd

            SHA1

            9291d3528c2f474e31b0df1a140c708c3232a0e8

            SHA256

            8c2ca380d86023ffd6789257098a4994a6e4245c7094ad9957d324d830b287cd

            SHA512

            e74811a8c5d78dbbec9ed86140ebb2d6ccda74e72cf022a98b80586b560f727c5e6e170b3b6316d23e37d1b3152da482ff6d03fa3bda5f6ff9e0b982d19cc98f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            92aa32dc2e58bc9b857dfa4e4a3e38dd

            SHA1

            9291d3528c2f474e31b0df1a140c708c3232a0e8

            SHA256

            8c2ca380d86023ffd6789257098a4994a6e4245c7094ad9957d324d830b287cd

            SHA512

            e74811a8c5d78dbbec9ed86140ebb2d6ccda74e72cf022a98b80586b560f727c5e6e170b3b6316d23e37d1b3152da482ff6d03fa3bda5f6ff9e0b982d19cc98f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d24db4ed2e651384314cb5bd89aedb4a

            SHA1

            3bf667b5a162905cbb5e6cbd9cf4f6ccfd09d256

            SHA256

            eaaebd9ac8847e8ea5ad7261899a886a25995499d35c87171dc4e43c9363b5b1

            SHA512

            c8d40bb8af8b7b2230a16a9e6b0f393b757774046922274bc03f3f0344b592fe18a7951ac403157c61ec1c6c566b9ab295dc69a93ba9dc044b254fad5a2d13df

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d24db4ed2e651384314cb5bd89aedb4a

            SHA1

            3bf667b5a162905cbb5e6cbd9cf4f6ccfd09d256

            SHA256

            eaaebd9ac8847e8ea5ad7261899a886a25995499d35c87171dc4e43c9363b5b1

            SHA512

            c8d40bb8af8b7b2230a16a9e6b0f393b757774046922274bc03f3f0344b592fe18a7951ac403157c61ec1c6c566b9ab295dc69a93ba9dc044b254fad5a2d13df

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d24db4ed2e651384314cb5bd89aedb4a

            SHA1

            3bf667b5a162905cbb5e6cbd9cf4f6ccfd09d256

            SHA256

            eaaebd9ac8847e8ea5ad7261899a886a25995499d35c87171dc4e43c9363b5b1

            SHA512

            c8d40bb8af8b7b2230a16a9e6b0f393b757774046922274bc03f3f0344b592fe18a7951ac403157c61ec1c6c566b9ab295dc69a93ba9dc044b254fad5a2d13df

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            94cdd50bb026981c9597aa07e653596b

            SHA1

            a11d615a56068f1b6db905a9fcc9cc8ae7050fa3

            SHA256

            dfb62dc05ed41a0e67a704b65fe9b8c75d2aed405048d86ce99a05c8c4d0b355

            SHA512

            4a4b7e4bb1a75f01b1f6291d3a7ebd89d9c652fca3268d7153afe73d972b7ff349be3160282e95d6c393f41a5458c0cc9f60c84fc6a0191f25785d1055bf8f2b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            94cdd50bb026981c9597aa07e653596b

            SHA1

            a11d615a56068f1b6db905a9fcc9cc8ae7050fa3

            SHA256

            dfb62dc05ed41a0e67a704b65fe9b8c75d2aed405048d86ce99a05c8c4d0b355

            SHA512

            4a4b7e4bb1a75f01b1f6291d3a7ebd89d9c652fca3268d7153afe73d972b7ff349be3160282e95d6c393f41a5458c0cc9f60c84fc6a0191f25785d1055bf8f2b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            94cdd50bb026981c9597aa07e653596b

            SHA1

            a11d615a56068f1b6db905a9fcc9cc8ae7050fa3

            SHA256

            dfb62dc05ed41a0e67a704b65fe9b8c75d2aed405048d86ce99a05c8c4d0b355

            SHA512

            4a4b7e4bb1a75f01b1f6291d3a7ebd89d9c652fca3268d7153afe73d972b7ff349be3160282e95d6c393f41a5458c0cc9f60c84fc6a0191f25785d1055bf8f2b

          • memory/424-153-0x0000000000000000-mapping.dmp

          • memory/1164-147-0x0000000000000000-mapping.dmp

          • memory/1688-159-0x0000000000000000-mapping.dmp

          • memory/2408-142-0x0000000000000000-mapping.dmp

          • memory/2412-141-0x0000000000000000-mapping.dmp

          • memory/3568-140-0x0000000000000000-mapping.dmp

          • memory/3832-137-0x0000000000000000-mapping.dmp

          • memory/4360-165-0x0000000000000000-mapping.dmp

          • memory/4532-136-0x0000000000000000-mapping.dmp

          • memory/4708-158-0x0000000000000000-mapping.dmp

          • memory/4752-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4752-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/5056-166-0x0000000000000000-mapping.dmp