Analysis

  • max time kernel
    148s
  • max time network
    156s
  • 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 10:18

General

  • Target

    9aa3af96ba1d4b9c9f9bf5e465427e72c94f2b774cbc6cf5fd4ad22ac1be9a06.exe

  • Size

    603KB

  • MD5

    c2b30e407beb5ba2d9e56d69f0f0c117

  • SHA1

    5f4858493883db09cc35dde54dbc61fd0cf7eca9

  • SHA256

    9aa3af96ba1d4b9c9f9bf5e465427e72c94f2b774cbc6cf5fd4ad22ac1be9a06

  • SHA512

    0e0fe178e004695c3f947505453ff039243d5c2c4de768f14d62e7cbdff5965a4f490c326db4f7b2308450d960941b6f3918537576f4785c6bf2827a48e66c84

  • SSDEEP

    12288:1Iny5DYTQn3km0awc63d0HtYpj6awDDOVSQTchsmyIi7Gb8eqLm/j3SbQD0IbLFC:BUT+km72GHtJDO/4umyIpZJzSbqLvN61

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\9aa3af96ba1d4b9c9f9bf5e465427e72c94f2b774cbc6cf5fd4ad22ac1be9a06.exe
    "C:\Users\Admin\AppData\Local\Temp\9aa3af96ba1d4b9c9f9bf5e465427e72c94f2b774cbc6cf5fd4ad22ac1be9a06.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:4712
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2052
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2396
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4764
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1508
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1656
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3020
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2216
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:208
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2664
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3792
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3188
          • 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:3672
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4552

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsv1687.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b898e4d969b7a3a38a7a439b6df30942

            SHA1

            ec544f47abc030f2f088a3b8d4247d2b429b3f97

            SHA256

            264895618bc095f64f2188923ec717c060e2a447b3d9c7fec6b3bcbf204cacca

            SHA512

            5e4a27d861a8174c8adace59ef42ae48e521a7b50f5a16cb64a5d9e29cf622751c7e168454a206f2418a8e360a7d35cd862d306a64a4ea6e471d514e98d6f18e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b898e4d969b7a3a38a7a439b6df30942

            SHA1

            ec544f47abc030f2f088a3b8d4247d2b429b3f97

            SHA256

            264895618bc095f64f2188923ec717c060e2a447b3d9c7fec6b3bcbf204cacca

            SHA512

            5e4a27d861a8174c8adace59ef42ae48e521a7b50f5a16cb64a5d9e29cf622751c7e168454a206f2418a8e360a7d35cd862d306a64a4ea6e471d514e98d6f18e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b898e4d969b7a3a38a7a439b6df30942

            SHA1

            ec544f47abc030f2f088a3b8d4247d2b429b3f97

            SHA256

            264895618bc095f64f2188923ec717c060e2a447b3d9c7fec6b3bcbf204cacca

            SHA512

            5e4a27d861a8174c8adace59ef42ae48e521a7b50f5a16cb64a5d9e29cf622751c7e168454a206f2418a8e360a7d35cd862d306a64a4ea6e471d514e98d6f18e

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b898e4d969b7a3a38a7a439b6df30942

            SHA1

            ec544f47abc030f2f088a3b8d4247d2b429b3f97

            SHA256

            264895618bc095f64f2188923ec717c060e2a447b3d9c7fec6b3bcbf204cacca

            SHA512

            5e4a27d861a8174c8adace59ef42ae48e521a7b50f5a16cb64a5d9e29cf622751c7e168454a206f2418a8e360a7d35cd862d306a64a4ea6e471d514e98d6f18e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            71e5ef670896f2b39be4f0daee52e1a1

            SHA1

            36173d7e37d79f8c320b007f447b8ad838e0ccea

            SHA256

            b5d615bd5777fe71fc89d564c8135cb23f2b94ec200ffb0d7a344f725460b06f

            SHA512

            1af6fd416454a3d1d62f6e26139ac1fbaac35d466d73be9e3ecc86333c03182a8b96836330f0ffa923ca46ed33b1a757798c75addc2d6d62878a1e7a309bd21e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            71e5ef670896f2b39be4f0daee52e1a1

            SHA1

            36173d7e37d79f8c320b007f447b8ad838e0ccea

            SHA256

            b5d615bd5777fe71fc89d564c8135cb23f2b94ec200ffb0d7a344f725460b06f

            SHA512

            1af6fd416454a3d1d62f6e26139ac1fbaac35d466d73be9e3ecc86333c03182a8b96836330f0ffa923ca46ed33b1a757798c75addc2d6d62878a1e7a309bd21e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            71e5ef670896f2b39be4f0daee52e1a1

            SHA1

            36173d7e37d79f8c320b007f447b8ad838e0ccea

            SHA256

            b5d615bd5777fe71fc89d564c8135cb23f2b94ec200ffb0d7a344f725460b06f

            SHA512

            1af6fd416454a3d1d62f6e26139ac1fbaac35d466d73be9e3ecc86333c03182a8b96836330f0ffa923ca46ed33b1a757798c75addc2d6d62878a1e7a309bd21e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0b49e38e07a70cf09d087d15c6934af9

            SHA1

            2affc0d3c9df3acc42018a30cbb3169d26dbab92

            SHA256

            8f5ef9a2af83206b536f2f3c69e13735518d49431b34074e5331158d65a8eb6f

            SHA512

            4bb540411052307bafea9f858c8c6b1aca226b165f0409640022455cf036089606fd74d3a47d3493176ff0d96ffa68b1251357337174218c49ddecc5c92ca741

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0b49e38e07a70cf09d087d15c6934af9

            SHA1

            2affc0d3c9df3acc42018a30cbb3169d26dbab92

            SHA256

            8f5ef9a2af83206b536f2f3c69e13735518d49431b34074e5331158d65a8eb6f

            SHA512

            4bb540411052307bafea9f858c8c6b1aca226b165f0409640022455cf036089606fd74d3a47d3493176ff0d96ffa68b1251357337174218c49ddecc5c92ca741

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            536e806bd8973e4bbd453640ffc60eee

            SHA1

            f8caead9f2047a498d98a7ae574a9181e317e292

            SHA256

            e72ca1c7277c039280e3f1d8a105c1131f727e8071ff3979401a3811c08148ac

            SHA512

            0a60ced592f93b5ea576afe71e9e0182f7dcd610391e56b8c0af22bb6c5282e83f33d8f8e23cd93b80d8c24de979b89843d77a9d225ef6c8930ecb99e550744e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            536e806bd8973e4bbd453640ffc60eee

            SHA1

            f8caead9f2047a498d98a7ae574a9181e317e292

            SHA256

            e72ca1c7277c039280e3f1d8a105c1131f727e8071ff3979401a3811c08148ac

            SHA512

            0a60ced592f93b5ea576afe71e9e0182f7dcd610391e56b8c0af22bb6c5282e83f33d8f8e23cd93b80d8c24de979b89843d77a9d225ef6c8930ecb99e550744e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            536e806bd8973e4bbd453640ffc60eee

            SHA1

            f8caead9f2047a498d98a7ae574a9181e317e292

            SHA256

            e72ca1c7277c039280e3f1d8a105c1131f727e8071ff3979401a3811c08148ac

            SHA512

            0a60ced592f93b5ea576afe71e9e0182f7dcd610391e56b8c0af22bb6c5282e83f33d8f8e23cd93b80d8c24de979b89843d77a9d225ef6c8930ecb99e550744e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            62149d532fc86e52495e4ce49355f8f2

            SHA1

            38c27c2dda21d0848058e3b73ed5399b9c86ef50

            SHA256

            abad0e2d22658a7e46adb2ba9ee04471011e35d1cd1286c54ad48a57b373220d

            SHA512

            c6e6af86e4c2892f7d9292fd8e62090c7d3050ba19947cd83e959cb5bdf1c60b139b4c5b6329dec136a7e800775852765ef554911af06b7319779d26e21bea12

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            62149d532fc86e52495e4ce49355f8f2

            SHA1

            38c27c2dda21d0848058e3b73ed5399b9c86ef50

            SHA256

            abad0e2d22658a7e46adb2ba9ee04471011e35d1cd1286c54ad48a57b373220d

            SHA512

            c6e6af86e4c2892f7d9292fd8e62090c7d3050ba19947cd83e959cb5bdf1c60b139b4c5b6329dec136a7e800775852765ef554911af06b7319779d26e21bea12

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            62149d532fc86e52495e4ce49355f8f2

            SHA1

            38c27c2dda21d0848058e3b73ed5399b9c86ef50

            SHA256

            abad0e2d22658a7e46adb2ba9ee04471011e35d1cd1286c54ad48a57b373220d

            SHA512

            c6e6af86e4c2892f7d9292fd8e62090c7d3050ba19947cd83e959cb5bdf1c60b139b4c5b6329dec136a7e800775852765ef554911af06b7319779d26e21bea12

          • memory/208-158-0x0000000000000000-mapping.dmp

          • memory/1508-141-0x0000000000000000-mapping.dmp

          • memory/1656-142-0x0000000000000000-mapping.dmp

          • memory/2052-136-0x0000000000000000-mapping.dmp

          • memory/2216-153-0x0000000000000000-mapping.dmp

          • memory/2396-137-0x0000000000000000-mapping.dmp

          • memory/2664-159-0x0000000000000000-mapping.dmp

          • memory/3020-147-0x0000000000000000-mapping.dmp

          • memory/3188-166-0x0000000000000000-mapping.dmp

          • memory/3792-165-0x0000000000000000-mapping.dmp

          • memory/4712-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4712-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4764-140-0x0000000000000000-mapping.dmp