Analysis

  • max time kernel
    164s
  • max time network
    177s
  • 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 10:53

General

  • Target

    b020a58cc12bf8a3a219eff3003f0742fce6aed78c747f804da2649c1ed48e78.exe

  • Size

    445KB

  • MD5

    0eb6e7daf803d6175fc8773cf44fda2a

  • SHA1

    b04de286719d19f1927362eced1f0b460bd867bb

  • SHA256

    b020a58cc12bf8a3a219eff3003f0742fce6aed78c747f804da2649c1ed48e78

  • SHA512

    6848e706471ad9226bc86fe87afe5a233b4b5adbdd8fb418e015a5e144a422940fa54a0cca4389d88b3497d13b2a925fae4ace3ba2bb9faf7afe4e7e07e713f7

  • SSDEEP

    12288:VYV22N6BQz7H2BY+OVj6Zmtie7YIIxatUbh:VYMe6SG/SVti+JtUd

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\b020a58cc12bf8a3a219eff3003f0742fce6aed78c747f804da2649c1ed48e78.exe
    "C:\Users\Admin\AppData\Local\Temp\b020a58cc12bf8a3a219eff3003f0742fce6aed78c747f804da2649c1ed48e78.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:2144
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2268
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1588
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1536
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4892
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4820
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4808
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3756
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4888
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3712
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4216
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3636
          • 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:1072
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:116

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

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

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fd0e041ed1c860fe3624dfe942149375

            SHA1

            9fc29de9b65adfd942cbc7ce8eff5c0ea1524449

            SHA256

            9df018a418a2dffec026e9e42e526cdecc7907bdd205961dc414489ba0ce0340

            SHA512

            4f79b066d51b4485f03b137a8216f759405dd98ec0332218e7a2f9b45d22b69ccdabb06f74c22a22056324d88d217b7b2d64ceb8ae3cc54e654afff02d5b0407

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fd0e041ed1c860fe3624dfe942149375

            SHA1

            9fc29de9b65adfd942cbc7ce8eff5c0ea1524449

            SHA256

            9df018a418a2dffec026e9e42e526cdecc7907bdd205961dc414489ba0ce0340

            SHA512

            4f79b066d51b4485f03b137a8216f759405dd98ec0332218e7a2f9b45d22b69ccdabb06f74c22a22056324d88d217b7b2d64ceb8ae3cc54e654afff02d5b0407

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fd0e041ed1c860fe3624dfe942149375

            SHA1

            9fc29de9b65adfd942cbc7ce8eff5c0ea1524449

            SHA256

            9df018a418a2dffec026e9e42e526cdecc7907bdd205961dc414489ba0ce0340

            SHA512

            4f79b066d51b4485f03b137a8216f759405dd98ec0332218e7a2f9b45d22b69ccdabb06f74c22a22056324d88d217b7b2d64ceb8ae3cc54e654afff02d5b0407

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fd0e041ed1c860fe3624dfe942149375

            SHA1

            9fc29de9b65adfd942cbc7ce8eff5c0ea1524449

            SHA256

            9df018a418a2dffec026e9e42e526cdecc7907bdd205961dc414489ba0ce0340

            SHA512

            4f79b066d51b4485f03b137a8216f759405dd98ec0332218e7a2f9b45d22b69ccdabb06f74c22a22056324d88d217b7b2d64ceb8ae3cc54e654afff02d5b0407

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b32ca37ab512cca0ddc8db1ccaac5760

            SHA1

            6ef0406185585eaeb5d05531f4de26da5e85c3db

            SHA256

            2348625d0465212de8c49c3812e7f12b4cc56e48771d8a25193bd2b49ac20362

            SHA512

            266369c8799bb533d692a0e601cb831f04ecb519500410751090d8946558726e300abc443bdc54d93e596b9676ba37597bd90ffeb6d1883e051ff00f2d10bb3d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b32ca37ab512cca0ddc8db1ccaac5760

            SHA1

            6ef0406185585eaeb5d05531f4de26da5e85c3db

            SHA256

            2348625d0465212de8c49c3812e7f12b4cc56e48771d8a25193bd2b49ac20362

            SHA512

            266369c8799bb533d692a0e601cb831f04ecb519500410751090d8946558726e300abc443bdc54d93e596b9676ba37597bd90ffeb6d1883e051ff00f2d10bb3d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b32ca37ab512cca0ddc8db1ccaac5760

            SHA1

            6ef0406185585eaeb5d05531f4de26da5e85c3db

            SHA256

            2348625d0465212de8c49c3812e7f12b4cc56e48771d8a25193bd2b49ac20362

            SHA512

            266369c8799bb533d692a0e601cb831f04ecb519500410751090d8946558726e300abc443bdc54d93e596b9676ba37597bd90ffeb6d1883e051ff00f2d10bb3d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            589150576166fc3febc2948dad1d0d9e

            SHA1

            2b5af5242c0b92202955a576009a6a59028c3b19

            SHA256

            2d9376b90e9770ab9d43f659d5bea3f21293c5b51dd2535b36648e1e26e5c0b1

            SHA512

            d8fb1706d4425cca4906f177722de4bd64994a319a44bfe5c1229c32e0b468b40eddd9745b3ad81a5c152aa0d7b5e7dccccc5350c020f04c98c24493fdee1f37

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            589150576166fc3febc2948dad1d0d9e

            SHA1

            2b5af5242c0b92202955a576009a6a59028c3b19

            SHA256

            2d9376b90e9770ab9d43f659d5bea3f21293c5b51dd2535b36648e1e26e5c0b1

            SHA512

            d8fb1706d4425cca4906f177722de4bd64994a319a44bfe5c1229c32e0b468b40eddd9745b3ad81a5c152aa0d7b5e7dccccc5350c020f04c98c24493fdee1f37

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aad4565814d1d6f4f2255abd1fad3b0c

            SHA1

            94100cd678df0f2659c754724b2f132f18e1be77

            SHA256

            8a17e5de1c5f540f7c3687db3a1e7a55f349bbfeb50f77248ed9a10f04a9233f

            SHA512

            52425316396743c8a3d76b4bd483ffc3afa3a1a9bb4344457401b735e9bdd54d712a5641b2f886ab9f4d894e6f5453f39bfc26c7a357a84ad4f53119389c5950

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aad4565814d1d6f4f2255abd1fad3b0c

            SHA1

            94100cd678df0f2659c754724b2f132f18e1be77

            SHA256

            8a17e5de1c5f540f7c3687db3a1e7a55f349bbfeb50f77248ed9a10f04a9233f

            SHA512

            52425316396743c8a3d76b4bd483ffc3afa3a1a9bb4344457401b735e9bdd54d712a5641b2f886ab9f4d894e6f5453f39bfc26c7a357a84ad4f53119389c5950

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            aad4565814d1d6f4f2255abd1fad3b0c

            SHA1

            94100cd678df0f2659c754724b2f132f18e1be77

            SHA256

            8a17e5de1c5f540f7c3687db3a1e7a55f349bbfeb50f77248ed9a10f04a9233f

            SHA512

            52425316396743c8a3d76b4bd483ffc3afa3a1a9bb4344457401b735e9bdd54d712a5641b2f886ab9f4d894e6f5453f39bfc26c7a357a84ad4f53119389c5950

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9eb530d4b9eb01ddc36b388237f3befd

            SHA1

            5dfa752d60b89d097719fc9f4d5251cca0b6df61

            SHA256

            85dff4cff208172692f03184ad339bbc542f211b078c1851834b67329660bf2b

            SHA512

            ccaa3538bfdf521199e7e35c13dda5770582ce3f28d861805d526782a01d9805fe39ec6d5bfc39ecd45b11559d6b6b26e35f211071d1db617e8279b9e363e724

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9eb530d4b9eb01ddc36b388237f3befd

            SHA1

            5dfa752d60b89d097719fc9f4d5251cca0b6df61

            SHA256

            85dff4cff208172692f03184ad339bbc542f211b078c1851834b67329660bf2b

            SHA512

            ccaa3538bfdf521199e7e35c13dda5770582ce3f28d861805d526782a01d9805fe39ec6d5bfc39ecd45b11559d6b6b26e35f211071d1db617e8279b9e363e724

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9eb530d4b9eb01ddc36b388237f3befd

            SHA1

            5dfa752d60b89d097719fc9f4d5251cca0b6df61

            SHA256

            85dff4cff208172692f03184ad339bbc542f211b078c1851834b67329660bf2b

            SHA512

            ccaa3538bfdf521199e7e35c13dda5770582ce3f28d861805d526782a01d9805fe39ec6d5bfc39ecd45b11559d6b6b26e35f211071d1db617e8279b9e363e724

          • memory/1536-139-0x0000000000000000-mapping.dmp

          • memory/1588-136-0x0000000000000000-mapping.dmp

          • memory/2268-135-0x0000000000000000-mapping.dmp

          • memory/3636-165-0x0000000000000000-mapping.dmp

          • memory/3712-158-0x0000000000000000-mapping.dmp

          • memory/3756-152-0x0000000000000000-mapping.dmp

          • memory/4216-164-0x0000000000000000-mapping.dmp

          • memory/4808-146-0x0000000000000000-mapping.dmp

          • memory/4820-141-0x0000000000000000-mapping.dmp

          • memory/4888-157-0x0000000000000000-mapping.dmp

          • memory/4892-140-0x0000000000000000-mapping.dmp