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Analysis

  • max time kernel
    220s
  • max time network
    245s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/11/2022, 03:09

General

  • Target

    4e1cdf6b4f176fdf7dd9c8012ffbd73daeab2e5716a75aa438a6e7fd74d206cd.exe

  • Size

    832KB

  • MD5

    d898dd1e84da32f955aca642e209d1f9

  • SHA1

    1212ab73dd5178be3ab5744b7a393e931f53c2dd

  • SHA256

    4e1cdf6b4f176fdf7dd9c8012ffbd73daeab2e5716a75aa438a6e7fd74d206cd

  • SHA512

    4b9a3f8cda4b346040261745d0a3707274b024e099d9daf7b649bd96ff47f22207cbc8e27b98ae9f6ed5c04157f56772b8c102386405a5542fb8dd329362fbb1

  • SSDEEP

    24576:SrfGR2wDeRMTNk78Wn1KT/q0NG2K/hPz67fIPc:SYYRMTNa8y0Ti+G2K4gU

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\4e1cdf6b4f176fdf7dd9c8012ffbd73daeab2e5716a75aa438a6e7fd74d206cd.exe
    "C:\Users\Admin\AppData\Local\Temp\4e1cdf6b4f176fdf7dd9c8012ffbd73daeab2e5716a75aa438a6e7fd74d206cd.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:308
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5016
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4704
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4536
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3816
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2664
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3688
        • 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:4776
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:5072
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1636
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2560
          • 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:1844
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3604

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

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

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f39c22811736bee16508d187640cb250

            SHA1

            a15b42a95372ffe4918f06e18e5cc0e3037ae75a

            SHA256

            d9c5b9dd6729fbd9ad5dd690e8476b025a2519cc6f18e709344d4f5ef35dbd51

            SHA512

            e0b5e86f3e935029d3263f4f03975b1ee1ce90678bae5d23ba875c8af2a22ce1649d11f488b795df60b907de57f36e913a47d74f84222c1658b4394effb0417c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f39c22811736bee16508d187640cb250

            SHA1

            a15b42a95372ffe4918f06e18e5cc0e3037ae75a

            SHA256

            d9c5b9dd6729fbd9ad5dd690e8476b025a2519cc6f18e709344d4f5ef35dbd51

            SHA512

            e0b5e86f3e935029d3263f4f03975b1ee1ce90678bae5d23ba875c8af2a22ce1649d11f488b795df60b907de57f36e913a47d74f84222c1658b4394effb0417c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f39c22811736bee16508d187640cb250

            SHA1

            a15b42a95372ffe4918f06e18e5cc0e3037ae75a

            SHA256

            d9c5b9dd6729fbd9ad5dd690e8476b025a2519cc6f18e709344d4f5ef35dbd51

            SHA512

            e0b5e86f3e935029d3263f4f03975b1ee1ce90678bae5d23ba875c8af2a22ce1649d11f488b795df60b907de57f36e913a47d74f84222c1658b4394effb0417c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f39c22811736bee16508d187640cb250

            SHA1

            a15b42a95372ffe4918f06e18e5cc0e3037ae75a

            SHA256

            d9c5b9dd6729fbd9ad5dd690e8476b025a2519cc6f18e709344d4f5ef35dbd51

            SHA512

            e0b5e86f3e935029d3263f4f03975b1ee1ce90678bae5d23ba875c8af2a22ce1649d11f488b795df60b907de57f36e913a47d74f84222c1658b4394effb0417c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            428KB

            MD5

            5409c3ef6a11f760044f8ec9495c502a

            SHA1

            c86da8a131a017326a7e572cdd2b83ae64750b38

            SHA256

            3763d4bf53259fb913d5f1bd50020b8a4fc8d3a951722b52b4a4dce11982e943

            SHA512

            35235bd5fdd986d961ab744d64400132cdb48f08c1ca752e34a1c1e38f12f3bc7cd680d79ad366fd07d03ad9b00f7a51525b02227e3ff7e0be31affbdc2e6961

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            428KB

            MD5

            5409c3ef6a11f760044f8ec9495c502a

            SHA1

            c86da8a131a017326a7e572cdd2b83ae64750b38

            SHA256

            3763d4bf53259fb913d5f1bd50020b8a4fc8d3a951722b52b4a4dce11982e943

            SHA512

            35235bd5fdd986d961ab744d64400132cdb48f08c1ca752e34a1c1e38f12f3bc7cd680d79ad366fd07d03ad9b00f7a51525b02227e3ff7e0be31affbdc2e6961

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            428KB

            MD5

            5409c3ef6a11f760044f8ec9495c502a

            SHA1

            c86da8a131a017326a7e572cdd2b83ae64750b38

            SHA256

            3763d4bf53259fb913d5f1bd50020b8a4fc8d3a951722b52b4a4dce11982e943

            SHA512

            35235bd5fdd986d961ab744d64400132cdb48f08c1ca752e34a1c1e38f12f3bc7cd680d79ad366fd07d03ad9b00f7a51525b02227e3ff7e0be31affbdc2e6961

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            cabd029e3833558a421f6c43caa24ded

            SHA1

            bcfbd3e20997059b9465415f1a1e48be57f3361c

            SHA256

            673587af473ed47f8f39024e6634424b7186a6c2fce5cdcf9f87b5cfece8b59b

            SHA512

            5be819595eeefebb9b16cb12f02951b1211bf2ea535d53ea7a43749323e45e991048492e896a16ed47723c6f6402fc293ba4859538d2ce14ea81ff7adfd86cd7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            cabd029e3833558a421f6c43caa24ded

            SHA1

            bcfbd3e20997059b9465415f1a1e48be57f3361c

            SHA256

            673587af473ed47f8f39024e6634424b7186a6c2fce5cdcf9f87b5cfece8b59b

            SHA512

            5be819595eeefebb9b16cb12f02951b1211bf2ea535d53ea7a43749323e45e991048492e896a16ed47723c6f6402fc293ba4859538d2ce14ea81ff7adfd86cd7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            330KB

            MD5

            b9606ac97e6e9d1029a2c8d8a5614511

            SHA1

            09d21a3975adc42ef1c8ddb0da45ce71b0ff0bfd

            SHA256

            32e5ad725a0ca68c29fc8c4042b4d6426e530b4716ee59a8516abf28b76d3b3d

            SHA512

            4baa3a80277fa5e66e3fdb1dbdca7f6a46c9683b7ce4c67c8a9c9e76993a0cd9830d4ea796b76aea927237dabde34d8c57c9ec5d964afa3bb1466b07086b8eba

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            330KB

            MD5

            b9606ac97e6e9d1029a2c8d8a5614511

            SHA1

            09d21a3975adc42ef1c8ddb0da45ce71b0ff0bfd

            SHA256

            32e5ad725a0ca68c29fc8c4042b4d6426e530b4716ee59a8516abf28b76d3b3d

            SHA512

            4baa3a80277fa5e66e3fdb1dbdca7f6a46c9683b7ce4c67c8a9c9e76993a0cd9830d4ea796b76aea927237dabde34d8c57c9ec5d964afa3bb1466b07086b8eba

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            330KB

            MD5

            b9606ac97e6e9d1029a2c8d8a5614511

            SHA1

            09d21a3975adc42ef1c8ddb0da45ce71b0ff0bfd

            SHA256

            32e5ad725a0ca68c29fc8c4042b4d6426e530b4716ee59a8516abf28b76d3b3d

            SHA512

            4baa3a80277fa5e66e3fdb1dbdca7f6a46c9683b7ce4c67c8a9c9e76993a0cd9830d4ea796b76aea927237dabde34d8c57c9ec5d964afa3bb1466b07086b8eba

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            187KB

            MD5

            c7844f16eb77b08bbeff5b181345c76c

            SHA1

            32f7c01d670109b68011a52379c77259f6e834dc

            SHA256

            537b62e43c75bef8b26501a6516488b3557fdd7254e83c5b64c722bf0701c9cc

            SHA512

            6ff78939761603c58b963a50078ffdb9eddb1ec8b14e91b92775554db5367993e0fd4c4be1eff171ce53d87e3312b1083381574861ef43f70f3bca01589f9ad7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            187KB

            MD5

            c7844f16eb77b08bbeff5b181345c76c

            SHA1

            32f7c01d670109b68011a52379c77259f6e834dc

            SHA256

            537b62e43c75bef8b26501a6516488b3557fdd7254e83c5b64c722bf0701c9cc

            SHA512

            6ff78939761603c58b963a50078ffdb9eddb1ec8b14e91b92775554db5367993e0fd4c4be1eff171ce53d87e3312b1083381574861ef43f70f3bca01589f9ad7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            187KB

            MD5

            c7844f16eb77b08bbeff5b181345c76c

            SHA1

            32f7c01d670109b68011a52379c77259f6e834dc

            SHA256

            537b62e43c75bef8b26501a6516488b3557fdd7254e83c5b64c722bf0701c9cc

            SHA512

            6ff78939761603c58b963a50078ffdb9eddb1ec8b14e91b92775554db5367993e0fd4c4be1eff171ce53d87e3312b1083381574861ef43f70f3bca01589f9ad7

          • memory/308-142-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/308-132-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/308-169-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB