Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:29

General

  • Target

    37980b4cb0d82bb016084e34d624dc37337911defb5691e84486b6db5e369894.exe

  • Size

    602KB

  • MD5

    07d3e4a252f5577d4cef4d7eeae6c2a6

  • SHA1

    1897e45b79e8aeb7a3567f263ec8126fbdb29d81

  • SHA256

    37980b4cb0d82bb016084e34d624dc37337911defb5691e84486b6db5e369894

  • SHA512

    b67e859d1418193b1c8a78ec7f3d3ca053f16f065c6b54c814545690bc813eca0e54f953cd5245bc7976fc76f08da18378119044d8ae951eb7a685a76119967c

  • SSDEEP

    12288:PIny5DYTg1qe3kcwZ65kUR9kql/Hm6FzL/bAc:XUTg1XqvckqlP3Fzh

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 13 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.

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37980b4cb0d82bb016084e34d624dc37337911defb5691e84486b6db5e369894.exe
    "C:\Users\Admin\AppData\Local\Temp\37980b4cb0d82bb016084e34d624dc37337911defb5691e84486b6db5e369894.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:1884
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1984
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1936
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1968
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1964
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1932
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1308
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1528
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1664
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1660
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:880
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1712
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1620
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1828

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f75e908cf18e922856d95a1dffaa8296

            SHA1

            566a62c8ee0340561426fc08f526ea93f7c851c5

            SHA256

            5f09b07d6cfe9dffe49d8b6c2513bc2bfe18a11aa58c486416b6f811ddf078a2

            SHA512

            d61cae2960bb4b619d5fc6a724254fa789db20721b580e2ee6375cc5097aab196566d64d8376062a62007ebe9d9f5ba8aaf4b93a40c664379c75a5061b9e51f1

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            d4532de8244ebd4b67c1e0dfdf325e70

            SHA1

            96e88dd3718f1d5f0df9d80e3de3fd4b7e7ebede

            SHA256

            7ee835682cacdc7e08f8169acb0e00b8a392637322bede01b8e8deff4ba66806

            SHA512

            78409d31ea055130231961bb3b468c9843efa3bf21ba9ca8aae2c78be1a098e1bae9c61549f60780257a78a8e5b9d38b4ea616f8b6b4ef9fdf02c7eee64085b4

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            c9470ebfdc3c9ffecaab27aa6317c072

            SHA1

            ddd35484095baa15a8bf1774776c0c5a0158a870

            SHA256

            bbf737a68b16043d74df456b373f779f2619ac9dc44d2e8983192d52ca00b822

            SHA512

            e2d80503b56697172889db08b38c497e0f9d39b20952b6d26f96c92c8468c4888f839e45835ffd0440f33b0c18a9ad3a37f5028f726669eadfc0c68c412ec6e5

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            f6cd33176b56f364710da423684946b7

            SHA1

            25e4d2e9956be48174a1d4b2f925e62d991d0467

            SHA256

            ddb2ae6a7d334f9e98eacfce3dcfdccada0063db74a3442a17eb85bf0ef8e90d

            SHA512

            dde01eb952253112d70253e41978c6b7736858eeb87ba3072031237825e6f42022250e9285ca7e71e550d0fdf5f4e12a8a39c94d3c942265736302d5f70b87d9

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            f6cd33176b56f364710da423684946b7

            SHA1

            25e4d2e9956be48174a1d4b2f925e62d991d0467

            SHA256

            ddb2ae6a7d334f9e98eacfce3dcfdccada0063db74a3442a17eb85bf0ef8e90d

            SHA512

            dde01eb952253112d70253e41978c6b7736858eeb87ba3072031237825e6f42022250e9285ca7e71e550d0fdf5f4e12a8a39c94d3c942265736302d5f70b87d9

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            29a2a6998272140686c3646f8c30b4e4

            SHA1

            fe07fa5cbbfd41cc3c4249587efa7dc5c3820fde

            SHA256

            cff32c7036c661a716e4b9d082813d714785dca9a058dbd6db3e704d6cec7d6f

            SHA512

            4109100081a3cf54408b944c64d8e4dd2b82482ebb17cfce699aae387bdd86047788ac98b6988819019dea6d823b47dbcd62927f484bfddefae3a77b0059be82

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            29a2a6998272140686c3646f8c30b4e4

            SHA1

            fe07fa5cbbfd41cc3c4249587efa7dc5c3820fde

            SHA256

            cff32c7036c661a716e4b9d082813d714785dca9a058dbd6db3e704d6cec7d6f

            SHA512

            4109100081a3cf54408b944c64d8e4dd2b82482ebb17cfce699aae387bdd86047788ac98b6988819019dea6d823b47dbcd62927f484bfddefae3a77b0059be82

          • \Users\Admin\AppData\Local\Temp\nso35E.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso35E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso35E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso35E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso35E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f75e908cf18e922856d95a1dffaa8296

            SHA1

            566a62c8ee0340561426fc08f526ea93f7c851c5

            SHA256

            5f09b07d6cfe9dffe49d8b6c2513bc2bfe18a11aa58c486416b6f811ddf078a2

            SHA512

            d61cae2960bb4b619d5fc6a724254fa789db20721b580e2ee6375cc5097aab196566d64d8376062a62007ebe9d9f5ba8aaf4b93a40c664379c75a5061b9e51f1

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f75e908cf18e922856d95a1dffaa8296

            SHA1

            566a62c8ee0340561426fc08f526ea93f7c851c5

            SHA256

            5f09b07d6cfe9dffe49d8b6c2513bc2bfe18a11aa58c486416b6f811ddf078a2

            SHA512

            d61cae2960bb4b619d5fc6a724254fa789db20721b580e2ee6375cc5097aab196566d64d8376062a62007ebe9d9f5ba8aaf4b93a40c664379c75a5061b9e51f1

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f75e908cf18e922856d95a1dffaa8296

            SHA1

            566a62c8ee0340561426fc08f526ea93f7c851c5

            SHA256

            5f09b07d6cfe9dffe49d8b6c2513bc2bfe18a11aa58c486416b6f811ddf078a2

            SHA512

            d61cae2960bb4b619d5fc6a724254fa789db20721b580e2ee6375cc5097aab196566d64d8376062a62007ebe9d9f5ba8aaf4b93a40c664379c75a5061b9e51f1

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            d4532de8244ebd4b67c1e0dfdf325e70

            SHA1

            96e88dd3718f1d5f0df9d80e3de3fd4b7e7ebede

            SHA256

            7ee835682cacdc7e08f8169acb0e00b8a392637322bede01b8e8deff4ba66806

            SHA512

            78409d31ea055130231961bb3b468c9843efa3bf21ba9ca8aae2c78be1a098e1bae9c61549f60780257a78a8e5b9d38b4ea616f8b6b4ef9fdf02c7eee64085b4

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            d4532de8244ebd4b67c1e0dfdf325e70

            SHA1

            96e88dd3718f1d5f0df9d80e3de3fd4b7e7ebede

            SHA256

            7ee835682cacdc7e08f8169acb0e00b8a392637322bede01b8e8deff4ba66806

            SHA512

            78409d31ea055130231961bb3b468c9843efa3bf21ba9ca8aae2c78be1a098e1bae9c61549f60780257a78a8e5b9d38b4ea616f8b6b4ef9fdf02c7eee64085b4

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            c9470ebfdc3c9ffecaab27aa6317c072

            SHA1

            ddd35484095baa15a8bf1774776c0c5a0158a870

            SHA256

            bbf737a68b16043d74df456b373f779f2619ac9dc44d2e8983192d52ca00b822

            SHA512

            e2d80503b56697172889db08b38c497e0f9d39b20952b6d26f96c92c8468c4888f839e45835ffd0440f33b0c18a9ad3a37f5028f726669eadfc0c68c412ec6e5

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            f6cd33176b56f364710da423684946b7

            SHA1

            25e4d2e9956be48174a1d4b2f925e62d991d0467

            SHA256

            ddb2ae6a7d334f9e98eacfce3dcfdccada0063db74a3442a17eb85bf0ef8e90d

            SHA512

            dde01eb952253112d70253e41978c6b7736858eeb87ba3072031237825e6f42022250e9285ca7e71e550d0fdf5f4e12a8a39c94d3c942265736302d5f70b87d9

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            29a2a6998272140686c3646f8c30b4e4

            SHA1

            fe07fa5cbbfd41cc3c4249587efa7dc5c3820fde

            SHA256

            cff32c7036c661a716e4b9d082813d714785dca9a058dbd6db3e704d6cec7d6f

            SHA512

            4109100081a3cf54408b944c64d8e4dd2b82482ebb17cfce699aae387bdd86047788ac98b6988819019dea6d823b47dbcd62927f484bfddefae3a77b0059be82

          • memory/880-86-0x0000000000000000-mapping.dmp
          • memory/1308-70-0x0000000000000000-mapping.dmp
          • memory/1528-76-0x0000000000000000-mapping.dmp
          • memory/1660-81-0x0000000000000000-mapping.dmp
          • memory/1664-80-0x0000000000000000-mapping.dmp
          • memory/1712-87-0x0000000000000000-mapping.dmp
          • memory/1884-54-0x0000000075571000-0x0000000075573000-memory.dmp
            Filesize

            8KB

          • memory/1884-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1884-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1932-64-0x0000000000000000-mapping.dmp
          • memory/1936-58-0x0000000000000000-mapping.dmp
          • memory/1964-62-0x0000000000000000-mapping.dmp
          • memory/1968-61-0x0000000000000000-mapping.dmp
          • memory/1984-57-0x0000000000000000-mapping.dmp