Analysis

  • max time kernel
    151s
  • max time network
    168s
  • 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 10:28

General

  • Target

    40a32fb895d630f5a3455b157f751bd491dd04b486623df4ac6e211f764a0133.exe

  • Size

    601KB

  • MD5

    2d4b5c1f9295636bb2c26f5cd2ac55cc

  • SHA1

    20d47386650f6209ac8a1d1219c91eaf0415c6fe

  • SHA256

    40a32fb895d630f5a3455b157f751bd491dd04b486623df4ac6e211f764a0133

  • SHA512

    a10a6f4958050fe059006c60a94e0340f5edc0738fdcc1946ab5caef8f30247e43c413b39ac096657a4dece5c8cffb2b2b9baea9607d75e41ae7eecf757e7434

  • SSDEEP

    12288:0Iny5DYTqIyUVDiDhefMpqu7ID6ppdxVVKY2do5yNvcrW1ATF:yUTqNUVAh0Mj7TptTN22rgAp

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\40a32fb895d630f5a3455b157f751bd491dd04b486623df4ac6e211f764a0133.exe
    "C:\Users\Admin\AppData\Local\Temp\40a32fb895d630f5a3455b157f751bd491dd04b486623df4ac6e211f764a0133.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:2088
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4392
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4284
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1888
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2832
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:208
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1436
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2028
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1100
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3844
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4820
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1980
          • 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:2600
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2632

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsbFF17.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            16c961fb3fff4eddc4387e3f4c8f5eb4

            SHA1

            11c86138168d73284c3a53ff0db28f91da1f57c9

            SHA256

            44bcd90f16497f002bc90d1819d80c738fe7c895e9b3c7d94a17445c0e6726a4

            SHA512

            17c1af193043b7998df9289a30193f9a1b1313d8b6fa59273f8c9628d3a134e6d5f7169a0b6efbf541ac26ca1954549019c355b804ac42d329d6d656500e1b89

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            16c961fb3fff4eddc4387e3f4c8f5eb4

            SHA1

            11c86138168d73284c3a53ff0db28f91da1f57c9

            SHA256

            44bcd90f16497f002bc90d1819d80c738fe7c895e9b3c7d94a17445c0e6726a4

            SHA512

            17c1af193043b7998df9289a30193f9a1b1313d8b6fa59273f8c9628d3a134e6d5f7169a0b6efbf541ac26ca1954549019c355b804ac42d329d6d656500e1b89

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            16c961fb3fff4eddc4387e3f4c8f5eb4

            SHA1

            11c86138168d73284c3a53ff0db28f91da1f57c9

            SHA256

            44bcd90f16497f002bc90d1819d80c738fe7c895e9b3c7d94a17445c0e6726a4

            SHA512

            17c1af193043b7998df9289a30193f9a1b1313d8b6fa59273f8c9628d3a134e6d5f7169a0b6efbf541ac26ca1954549019c355b804ac42d329d6d656500e1b89

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            16c961fb3fff4eddc4387e3f4c8f5eb4

            SHA1

            11c86138168d73284c3a53ff0db28f91da1f57c9

            SHA256

            44bcd90f16497f002bc90d1819d80c738fe7c895e9b3c7d94a17445c0e6726a4

            SHA512

            17c1af193043b7998df9289a30193f9a1b1313d8b6fa59273f8c9628d3a134e6d5f7169a0b6efbf541ac26ca1954549019c355b804ac42d329d6d656500e1b89

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1e544ffd4eaf52aeaccd79f31bac8131

            SHA1

            438f4a0896ef97dac1e0e9f39a55ff04dcc2f72b

            SHA256

            a57c5b0ce18cf86a22c78d7b94f37793108c9e6686e38e26146b3d7b2168f294

            SHA512

            633c893089ca22e16f2ddf0cea0c9e1a00efd622cd61d3bb5fa3dc58bf0ae7f459066d72a478a42c10cccdbf82eac49c4f0c5c7c0681a5d25470d1fc89f75801

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1e544ffd4eaf52aeaccd79f31bac8131

            SHA1

            438f4a0896ef97dac1e0e9f39a55ff04dcc2f72b

            SHA256

            a57c5b0ce18cf86a22c78d7b94f37793108c9e6686e38e26146b3d7b2168f294

            SHA512

            633c893089ca22e16f2ddf0cea0c9e1a00efd622cd61d3bb5fa3dc58bf0ae7f459066d72a478a42c10cccdbf82eac49c4f0c5c7c0681a5d25470d1fc89f75801

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            1e544ffd4eaf52aeaccd79f31bac8131

            SHA1

            438f4a0896ef97dac1e0e9f39a55ff04dcc2f72b

            SHA256

            a57c5b0ce18cf86a22c78d7b94f37793108c9e6686e38e26146b3d7b2168f294

            SHA512

            633c893089ca22e16f2ddf0cea0c9e1a00efd622cd61d3bb5fa3dc58bf0ae7f459066d72a478a42c10cccdbf82eac49c4f0c5c7c0681a5d25470d1fc89f75801

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            bb5376588f4a4a129fc1ef3d3e9f655a

            SHA1

            dba19b8067cbd310fa17bbef123b5de797e33e13

            SHA256

            90788fa79512a8980b1cc2364fd278ae15782a28d4dcc8dc8523760882308ea2

            SHA512

            feafe064712df9dea3305d59fbc1a2ca6c45dd85f6bf6378f6ef16d58afb0db47f5272328de5579a5f7545d05cbb47645aca559813987e95628726faddd58a0f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            bb5376588f4a4a129fc1ef3d3e9f655a

            SHA1

            dba19b8067cbd310fa17bbef123b5de797e33e13

            SHA256

            90788fa79512a8980b1cc2364fd278ae15782a28d4dcc8dc8523760882308ea2

            SHA512

            feafe064712df9dea3305d59fbc1a2ca6c45dd85f6bf6378f6ef16d58afb0db47f5272328de5579a5f7545d05cbb47645aca559813987e95628726faddd58a0f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6a5e65e1369246a62e8a408d10d435de

            SHA1

            56d1f488a4ad34ed7ae8c16bf719363e9d3e0288

            SHA256

            0e59762a47fff3a6c90d18f4293474ec901f6e18ee4b9a3ed73b4aa31434a631

            SHA512

            e635cd86d8d8af32ceda3c03753739c37289048efb9ea4985455f01dc8f6f341eb477270f6600d8fc49270a5335c00e2b9bf5a4a3e1cdcf6e1fb7aea111ddbe7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6a5e65e1369246a62e8a408d10d435de

            SHA1

            56d1f488a4ad34ed7ae8c16bf719363e9d3e0288

            SHA256

            0e59762a47fff3a6c90d18f4293474ec901f6e18ee4b9a3ed73b4aa31434a631

            SHA512

            e635cd86d8d8af32ceda3c03753739c37289048efb9ea4985455f01dc8f6f341eb477270f6600d8fc49270a5335c00e2b9bf5a4a3e1cdcf6e1fb7aea111ddbe7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6a5e65e1369246a62e8a408d10d435de

            SHA1

            56d1f488a4ad34ed7ae8c16bf719363e9d3e0288

            SHA256

            0e59762a47fff3a6c90d18f4293474ec901f6e18ee4b9a3ed73b4aa31434a631

            SHA512

            e635cd86d8d8af32ceda3c03753739c37289048efb9ea4985455f01dc8f6f341eb477270f6600d8fc49270a5335c00e2b9bf5a4a3e1cdcf6e1fb7aea111ddbe7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9bedf0de40ee80dd7d5f02e551cf1c58

            SHA1

            152b6233dbe9282bb37774a692611ed575bb0f03

            SHA256

            41fe8b523184ac5415254d80d6f8673edf6a26bf3b9201734d1e40109ce5e1f6

            SHA512

            4a745d8b4a7316200b33211077cfbb135262756127fe1197b3aac31f6e20856acac5c2fed49fb59b8a0ec070be4f382126e6a883f4b07a2078e985374ca81402

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9bedf0de40ee80dd7d5f02e551cf1c58

            SHA1

            152b6233dbe9282bb37774a692611ed575bb0f03

            SHA256

            41fe8b523184ac5415254d80d6f8673edf6a26bf3b9201734d1e40109ce5e1f6

            SHA512

            4a745d8b4a7316200b33211077cfbb135262756127fe1197b3aac31f6e20856acac5c2fed49fb59b8a0ec070be4f382126e6a883f4b07a2078e985374ca81402

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9bedf0de40ee80dd7d5f02e551cf1c58

            SHA1

            152b6233dbe9282bb37774a692611ed575bb0f03

            SHA256

            41fe8b523184ac5415254d80d6f8673edf6a26bf3b9201734d1e40109ce5e1f6

            SHA512

            4a745d8b4a7316200b33211077cfbb135262756127fe1197b3aac31f6e20856acac5c2fed49fb59b8a0ec070be4f382126e6a883f4b07a2078e985374ca81402

          • memory/208-143-0x0000000000000000-mapping.dmp

          • memory/1100-159-0x0000000000000000-mapping.dmp

          • memory/1436-148-0x0000000000000000-mapping.dmp

          • memory/1888-140-0x0000000000000000-mapping.dmp

          • memory/1980-167-0x0000000000000000-mapping.dmp

          • memory/2028-154-0x0000000000000000-mapping.dmp

          • memory/2088-142-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2088-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2088-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2832-141-0x0000000000000000-mapping.dmp

          • memory/3844-160-0x0000000000000000-mapping.dmp

          • memory/4284-136-0x0000000000000000-mapping.dmp

          • memory/4392-135-0x0000000000000000-mapping.dmp

          • memory/4820-166-0x0000000000000000-mapping.dmp