Analysis

  • max time kernel
    92s
  • 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 10:13

General

  • Target

    c4912afc217a8540774a0a91703e30342bd45c91c1945ea9aa054a9e0df5815e.exe

  • Size

    602KB

  • MD5

    e889a6be796eb9774b3df13c571c8039

  • SHA1

    2d843f0d6c129c91db2e616e5ebfefd3653917c9

  • SHA256

    c4912afc217a8540774a0a91703e30342bd45c91c1945ea9aa054a9e0df5815e

  • SHA512

    0ead60c2e780477c5fd0da3a555844b1741312f10b41fb422f9322f851477ab6be2ef13007476e7bdfcdcb83a465ef009537e808a99520c039edc830439d84bf

  • SSDEEP

    12288:wIny5DYTWxSgXuHHoMbudVCEaDknDkgfeBH4kovNM7qAdazng8:OUTWxSgXooMbudVlaknD/ep4kolMBGnL

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\c4912afc217a8540774a0a91703e30342bd45c91c1945ea9aa054a9e0df5815e.exe
    "C:\Users\Admin\AppData\Local\Temp\c4912afc217a8540774a0a91703e30342bd45c91c1945ea9aa054a9e0df5815e.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:4572
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2204
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:5096
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5028
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1248
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3440
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1868
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4064
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1820
          • 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:2848
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2960
          • 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:1144

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsdEA95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9eb1511ba87aaafb353d663903a89a94

            SHA1

            21061982ba472a99dc064fd12918ccc9e97d26b5

            SHA256

            68ecc0f0e4a9f2b692480a8bf2056d10af90b12db2c72bc65c3d20564314b19f

            SHA512

            1fad455b089d8383794f235c7542e53216583c879d1041747cc2a1c7c60c3fffd64cc458dac3f5900b5ddf237e2c35b5a600a6a3d8f0206ec20f8ea8f1d0ce18

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9eb1511ba87aaafb353d663903a89a94

            SHA1

            21061982ba472a99dc064fd12918ccc9e97d26b5

            SHA256

            68ecc0f0e4a9f2b692480a8bf2056d10af90b12db2c72bc65c3d20564314b19f

            SHA512

            1fad455b089d8383794f235c7542e53216583c879d1041747cc2a1c7c60c3fffd64cc458dac3f5900b5ddf237e2c35b5a600a6a3d8f0206ec20f8ea8f1d0ce18

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9eb1511ba87aaafb353d663903a89a94

            SHA1

            21061982ba472a99dc064fd12918ccc9e97d26b5

            SHA256

            68ecc0f0e4a9f2b692480a8bf2056d10af90b12db2c72bc65c3d20564314b19f

            SHA512

            1fad455b089d8383794f235c7542e53216583c879d1041747cc2a1c7c60c3fffd64cc458dac3f5900b5ddf237e2c35b5a600a6a3d8f0206ec20f8ea8f1d0ce18

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9eb1511ba87aaafb353d663903a89a94

            SHA1

            21061982ba472a99dc064fd12918ccc9e97d26b5

            SHA256

            68ecc0f0e4a9f2b692480a8bf2056d10af90b12db2c72bc65c3d20564314b19f

            SHA512

            1fad455b089d8383794f235c7542e53216583c879d1041747cc2a1c7c60c3fffd64cc458dac3f5900b5ddf237e2c35b5a600a6a3d8f0206ec20f8ea8f1d0ce18

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0978c77548124a8729e753d3fb87b794

            SHA1

            f526c0c150b48cff5307dece9951e981618810c9

            SHA256

            30033007f912204a30c5c176f81dd6d6290ed51bbe634995b77a56ccd24abc28

            SHA512

            3ebe9eb265e5dd26e32cf79f370ea9bddc9270516a79e70fed2559f426adffe2cb2f212e63ec7a2a5d989e92998e0b86b17f4ca9d9083b1e8297efbd8afe6775

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0978c77548124a8729e753d3fb87b794

            SHA1

            f526c0c150b48cff5307dece9951e981618810c9

            SHA256

            30033007f912204a30c5c176f81dd6d6290ed51bbe634995b77a56ccd24abc28

            SHA512

            3ebe9eb265e5dd26e32cf79f370ea9bddc9270516a79e70fed2559f426adffe2cb2f212e63ec7a2a5d989e92998e0b86b17f4ca9d9083b1e8297efbd8afe6775

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0978c77548124a8729e753d3fb87b794

            SHA1

            f526c0c150b48cff5307dece9951e981618810c9

            SHA256

            30033007f912204a30c5c176f81dd6d6290ed51bbe634995b77a56ccd24abc28

            SHA512

            3ebe9eb265e5dd26e32cf79f370ea9bddc9270516a79e70fed2559f426adffe2cb2f212e63ec7a2a5d989e92998e0b86b17f4ca9d9083b1e8297efbd8afe6775

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3b5874e1ba5e0116d5247232c0c676d9

            SHA1

            5e9c4774f02091a4ed4ac5407a5d00cc011c3437

            SHA256

            6babb77bdcd6cd4658be6ed3614e456e5ba244798aa076dd4eb688a20095fdd0

            SHA512

            b8cb8e59ae12b02ae6d8aba20927044224831f7201d91a184653560802640c371984a20e7cd96e937fa98e5b0e51769d4eec807921eb98a2573451437b1fd3f0

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3b5874e1ba5e0116d5247232c0c676d9

            SHA1

            5e9c4774f02091a4ed4ac5407a5d00cc011c3437

            SHA256

            6babb77bdcd6cd4658be6ed3614e456e5ba244798aa076dd4eb688a20095fdd0

            SHA512

            b8cb8e59ae12b02ae6d8aba20927044224831f7201d91a184653560802640c371984a20e7cd96e937fa98e5b0e51769d4eec807921eb98a2573451437b1fd3f0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c7e63959588e827244fe0a1e230f547c

            SHA1

            91dcde52882ab2466536ca30e14a01960956abae

            SHA256

            123de927edf2669de18d52f4455a117cad94fcecf255cca9cc9064cdaf980761

            SHA512

            36aec68de5c8ab0ca9c226369dd5600463700d15040989c2d21cdb13511a5c205693223e645bd4683e43f28ebcce69a9849e90d4e82b89dfd056c8675db880e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c7e63959588e827244fe0a1e230f547c

            SHA1

            91dcde52882ab2466536ca30e14a01960956abae

            SHA256

            123de927edf2669de18d52f4455a117cad94fcecf255cca9cc9064cdaf980761

            SHA512

            36aec68de5c8ab0ca9c226369dd5600463700d15040989c2d21cdb13511a5c205693223e645bd4683e43f28ebcce69a9849e90d4e82b89dfd056c8675db880e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c7e63959588e827244fe0a1e230f547c

            SHA1

            91dcde52882ab2466536ca30e14a01960956abae

            SHA256

            123de927edf2669de18d52f4455a117cad94fcecf255cca9cc9064cdaf980761

            SHA512

            36aec68de5c8ab0ca9c226369dd5600463700d15040989c2d21cdb13511a5c205693223e645bd4683e43f28ebcce69a9849e90d4e82b89dfd056c8675db880e2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            01573d5e7103049c26c8e31cdc9058c5

            SHA1

            2deca685fefaba6720454100f24ba2b771723c70

            SHA256

            eaa7e3a0828a9121a4b67d3e367b9a24e1fcb1f1208c5a35686e40758fded7e2

            SHA512

            4dd4f75b37fa394e017361ab8916281984be095ecca825d9928f2a58b9e0b5acd9292cd98f344ae8d4724355e0302a9a4920692419dca88310099fc2513c57b0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            01573d5e7103049c26c8e31cdc9058c5

            SHA1

            2deca685fefaba6720454100f24ba2b771723c70

            SHA256

            eaa7e3a0828a9121a4b67d3e367b9a24e1fcb1f1208c5a35686e40758fded7e2

            SHA512

            4dd4f75b37fa394e017361ab8916281984be095ecca825d9928f2a58b9e0b5acd9292cd98f344ae8d4724355e0302a9a4920692419dca88310099fc2513c57b0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            01573d5e7103049c26c8e31cdc9058c5

            SHA1

            2deca685fefaba6720454100f24ba2b771723c70

            SHA256

            eaa7e3a0828a9121a4b67d3e367b9a24e1fcb1f1208c5a35686e40758fded7e2

            SHA512

            4dd4f75b37fa394e017361ab8916281984be095ecca825d9928f2a58b9e0b5acd9292cd98f344ae8d4724355e0302a9a4920692419dca88310099fc2513c57b0

          • memory/1248-141-0x0000000000000000-mapping.dmp

          • memory/1820-158-0x0000000000000000-mapping.dmp

          • memory/1868-147-0x0000000000000000-mapping.dmp

          • memory/2204-136-0x0000000000000000-mapping.dmp

          • memory/2848-165-0x0000000000000000-mapping.dmp

          • memory/2960-166-0x0000000000000000-mapping.dmp

          • memory/3440-142-0x0000000000000000-mapping.dmp

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

          • memory/4064-153-0x0000000000000000-mapping.dmp

          • memory/4572-133-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4572-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/5028-140-0x0000000000000000-mapping.dmp

          • memory/5096-137-0x0000000000000000-mapping.dmp