Analysis

  • max time kernel
    171s
  • max time network
    192s
  • 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 10:12

General

  • Target

    c6c8dfa76fc1e57b7bfbefaed5688b76fcc59807b8dba2dd8862d38afa92e05c.exe

  • Size

    603KB

  • MD5

    f9138fee14b23ede07767ef3fdb7a425

  • SHA1

    e77ccb64a56c914e6e988122cce5c48fda5b9dab

  • SHA256

    c6c8dfa76fc1e57b7bfbefaed5688b76fcc59807b8dba2dd8862d38afa92e05c

  • SHA512

    daef10d1a342628795ebbfec21b48ef4e951cde69df2ee2fe5873d466a171032325079ce4f3190ed8d6d7eff8192bb82f3a6a14a232ddc13a17be782fccfa319

  • SSDEEP

    12288:lIny5DYTmIONBBBP6qRLtlEIC2LC822cBvpZyzCLMtOX65+D:RUTmRNrBP1JlEI5LBcBRZeCW/u

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\c6c8dfa76fc1e57b7bfbefaed5688b76fcc59807b8dba2dd8862d38afa92e05c.exe
    "C:\Users\Admin\AppData\Local\Temp\c6c8dfa76fc1e57b7bfbefaed5688b76fcc59807b8dba2dd8862d38afa92e05c.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:1092
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2676
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2604
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1832
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2516
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:988
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:956
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3180
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1744
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4140
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4440
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:5052
          • 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:4480
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4156

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nst11A5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f11fb97f0ba5bf97d7fa9b0472177cd4

            SHA1

            3e30265f9d796d90ee7da2e33768c6dea38121ae

            SHA256

            473f5a8bec06cff7cde8632bbbbab387b26714be56f547c9e888984a8c73bf09

            SHA512

            a0c4605036afffe06e08ff3deee16b342deac213b6d70a4faa107f0a4dde0889262ba672965fd39158d82ef3ed06c4e898b9caafe89a4595433eccaeabdf9f90

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f11fb97f0ba5bf97d7fa9b0472177cd4

            SHA1

            3e30265f9d796d90ee7da2e33768c6dea38121ae

            SHA256

            473f5a8bec06cff7cde8632bbbbab387b26714be56f547c9e888984a8c73bf09

            SHA512

            a0c4605036afffe06e08ff3deee16b342deac213b6d70a4faa107f0a4dde0889262ba672965fd39158d82ef3ed06c4e898b9caafe89a4595433eccaeabdf9f90

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f11fb97f0ba5bf97d7fa9b0472177cd4

            SHA1

            3e30265f9d796d90ee7da2e33768c6dea38121ae

            SHA256

            473f5a8bec06cff7cde8632bbbbab387b26714be56f547c9e888984a8c73bf09

            SHA512

            a0c4605036afffe06e08ff3deee16b342deac213b6d70a4faa107f0a4dde0889262ba672965fd39158d82ef3ed06c4e898b9caafe89a4595433eccaeabdf9f90

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f11fb97f0ba5bf97d7fa9b0472177cd4

            SHA1

            3e30265f9d796d90ee7da2e33768c6dea38121ae

            SHA256

            473f5a8bec06cff7cde8632bbbbab387b26714be56f547c9e888984a8c73bf09

            SHA512

            a0c4605036afffe06e08ff3deee16b342deac213b6d70a4faa107f0a4dde0889262ba672965fd39158d82ef3ed06c4e898b9caafe89a4595433eccaeabdf9f90

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            111d99c5bd3d3264ffab79f9e043a082

            SHA1

            9841d2c48b728d151cad7d9e74080e6431a50595

            SHA256

            90c8a30707cb82eb0cb87406cfc2de6808cee21e39fc9e60d5e00d353058b7ca

            SHA512

            0901f953871ba8419a9472b1170febe1ea819ff4dd0f6e8137c8a380c87f724a01fe37306c72963003a58715cec9febb27d5326702a066ccc6261ae88aca5ec5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            111d99c5bd3d3264ffab79f9e043a082

            SHA1

            9841d2c48b728d151cad7d9e74080e6431a50595

            SHA256

            90c8a30707cb82eb0cb87406cfc2de6808cee21e39fc9e60d5e00d353058b7ca

            SHA512

            0901f953871ba8419a9472b1170febe1ea819ff4dd0f6e8137c8a380c87f724a01fe37306c72963003a58715cec9febb27d5326702a066ccc6261ae88aca5ec5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            111d99c5bd3d3264ffab79f9e043a082

            SHA1

            9841d2c48b728d151cad7d9e74080e6431a50595

            SHA256

            90c8a30707cb82eb0cb87406cfc2de6808cee21e39fc9e60d5e00d353058b7ca

            SHA512

            0901f953871ba8419a9472b1170febe1ea819ff4dd0f6e8137c8a380c87f724a01fe37306c72963003a58715cec9febb27d5326702a066ccc6261ae88aca5ec5

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            42cd044e067cdc93bbda551b98cba370

            SHA1

            302b946776ebcc80ba8b1067b2b0178ddf71276c

            SHA256

            4d09e3dc2caabe5f687304ec179f4c020575a32e15175fdab9288897358ee7fc

            SHA512

            da5742bc4bce5cda3d0b677281728b44649ffb8338d1238d0cdd27a5839f8d0c395b27022d9c99e32ee5887a657dc2e68adb18aa3dbf1d7ac19fc79b8bc7587f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            42cd044e067cdc93bbda551b98cba370

            SHA1

            302b946776ebcc80ba8b1067b2b0178ddf71276c

            SHA256

            4d09e3dc2caabe5f687304ec179f4c020575a32e15175fdab9288897358ee7fc

            SHA512

            da5742bc4bce5cda3d0b677281728b44649ffb8338d1238d0cdd27a5839f8d0c395b27022d9c99e32ee5887a657dc2e68adb18aa3dbf1d7ac19fc79b8bc7587f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            12359dc54704e124200cbdb40ac5a1a5

            SHA1

            4f7dde8d26fbd63ddd44d2ec01b2e77675d6e6ba

            SHA256

            f7cd61c28180b7e2f48af560ba8d1da8478427732e6433dbae1f14c23c58fdf3

            SHA512

            99edd1130b86efc088f9fe63052675e494f943b0c6605bd6bb1f96985c69fc6e8daee7d9785e6e104e36ebe18ca729a1822c954e8ccbbc112e94fb83d385614a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            12359dc54704e124200cbdb40ac5a1a5

            SHA1

            4f7dde8d26fbd63ddd44d2ec01b2e77675d6e6ba

            SHA256

            f7cd61c28180b7e2f48af560ba8d1da8478427732e6433dbae1f14c23c58fdf3

            SHA512

            99edd1130b86efc088f9fe63052675e494f943b0c6605bd6bb1f96985c69fc6e8daee7d9785e6e104e36ebe18ca729a1822c954e8ccbbc112e94fb83d385614a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            12359dc54704e124200cbdb40ac5a1a5

            SHA1

            4f7dde8d26fbd63ddd44d2ec01b2e77675d6e6ba

            SHA256

            f7cd61c28180b7e2f48af560ba8d1da8478427732e6433dbae1f14c23c58fdf3

            SHA512

            99edd1130b86efc088f9fe63052675e494f943b0c6605bd6bb1f96985c69fc6e8daee7d9785e6e104e36ebe18ca729a1822c954e8ccbbc112e94fb83d385614a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            86305ce2a3381ef79abc78a62004b4cc

            SHA1

            cb97ff851d93e4addd42ac47c0faf1e64750b5b8

            SHA256

            9734ab15e6c23a9d20f1d738c0c3be65d761dd78eda1be62f000ffe69cdf1c1f

            SHA512

            83e1c4227abd144442912c6f8470931215e8c7e5096222c996f6ece448a0dbd16ad53e9c417a7b74df0e77ac068e8ec8192ceff467582b6dc1bb48480094c8c4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            86305ce2a3381ef79abc78a62004b4cc

            SHA1

            cb97ff851d93e4addd42ac47c0faf1e64750b5b8

            SHA256

            9734ab15e6c23a9d20f1d738c0c3be65d761dd78eda1be62f000ffe69cdf1c1f

            SHA512

            83e1c4227abd144442912c6f8470931215e8c7e5096222c996f6ece448a0dbd16ad53e9c417a7b74df0e77ac068e8ec8192ceff467582b6dc1bb48480094c8c4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            86305ce2a3381ef79abc78a62004b4cc

            SHA1

            cb97ff851d93e4addd42ac47c0faf1e64750b5b8

            SHA256

            9734ab15e6c23a9d20f1d738c0c3be65d761dd78eda1be62f000ffe69cdf1c1f

            SHA512

            83e1c4227abd144442912c6f8470931215e8c7e5096222c996f6ece448a0dbd16ad53e9c417a7b74df0e77ac068e8ec8192ceff467582b6dc1bb48480094c8c4

          • memory/956-147-0x0000000000000000-mapping.dmp

          • memory/988-142-0x0000000000000000-mapping.dmp

          • memory/1092-136-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1092-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1744-158-0x0000000000000000-mapping.dmp

          • memory/1832-140-0x0000000000000000-mapping.dmp

          • memory/2516-141-0x0000000000000000-mapping.dmp

          • memory/2604-137-0x0000000000000000-mapping.dmp

          • memory/2676-135-0x0000000000000000-mapping.dmp

          • memory/3180-153-0x0000000000000000-mapping.dmp

          • memory/4140-159-0x0000000000000000-mapping.dmp

          • memory/4440-165-0x0000000000000000-mapping.dmp

          • memory/5052-166-0x0000000000000000-mapping.dmp