Analysis

  • max time kernel
    45s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:20

General

  • Target

    8a01632520bab63662d865e93dd5325db33cbe0563589b06fb9d8a7f00a8cbf4.exe

  • Size

    603KB

  • MD5

    18045d5c7364acb7138cf8631b94dbf0

  • SHA1

    6d87cb283180594e67780df9b68289bbed52415d

  • SHA256

    8a01632520bab63662d865e93dd5325db33cbe0563589b06fb9d8a7f00a8cbf4

  • SHA512

    ea34ceaa69eb470ec613b0f06eb9d65662ca7ac2050e2e284dad0b74c7b7dcc30534740ca2d61c40f2c842b3d261bfc23db4c826dc85dcdf23063f192b713e10

  • SSDEEP

    12288:jIny5DYTQIQ535cwc8rSFCimdsrSb3ggwaFkzY6t5iu:rUTQzy8rRiuXwQkzYo

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\8a01632520bab63662d865e93dd5325db33cbe0563589b06fb9d8a7f00a8cbf4.exe
    "C:\Users\Admin\AppData\Local\Temp\8a01632520bab63662d865e93dd5325db33cbe0563589b06fb9d8a7f00a8cbf4.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:1956
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:544
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:816
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1160
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:268
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2040
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1932
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1824
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1604
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:316
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1612
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1512
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1872
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:524

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ee6c4ed3340335a2daafe3d7c1073c2f

            SHA1

            910dbf1c1d2ae3898c27f4b6d7903ddee7ff221b

            SHA256

            a1949c0aeba89c4e2c77c2135010e3d47df2c7cd4eec7f117a1b1768d59e828f

            SHA512

            e9969d3e1032dedae97d85b28f2d9bcf7a9836e7da0227734631af0f386b6d6c2cc289d69aef997fe56b129ab6027044db2b03738cb21d5457afb9b0358f1cb8

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            bee8087f3e3be3f13ea7f9f4a4435aab

            SHA1

            c0efd0eb66f488d706d6f6f3e3c16aef8c5bea83

            SHA256

            4ce5e2c6fb2746e2d73aae08b0a31cbae5a1a9a41ecb031e1a5eb2b4b95fff7f

            SHA512

            5851205a11919e4ac82a43e584c6a672bb39f788ab63e424a46ddce4ea4a2dc3818ca675adfcffbd88e546a437f6b4e73fa0415e692f15b3377c8e57f9a4f592

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            25580ae1136d75fb2bc516fc37fff385

            SHA1

            b9cac3ac676e2752b93785719772cba026f1a4b6

            SHA256

            ccdd53920480ead795bdd87e5858610db9a4e26da32daab16483aa9c5060ca0d

            SHA512

            b269502a92cf73efb76aa781c6f2f180e9be8ad2b9a1431860b0352941b00693026055ab293d15f6f80abffb10c60f331d27d47046f8aed08cbcfe77de4a396d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1bbd96e34ff6cd48dfd7616905888704

            SHA1

            f339f8195c105f2760004fa689a314777bee82c6

            SHA256

            51f2cbfbb20cdc16c3956109912e6ccc944756eb34da9ad0c130707e00e61526

            SHA512

            0b59e0bdfd9fcc160c73aa9d46982930c10c701a1a1b3e90f935b6960284d918768acf06b24aee4fb5d28f09890a2f63158cfadf9864d79aaca683b7b712fd7a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1bbd96e34ff6cd48dfd7616905888704

            SHA1

            f339f8195c105f2760004fa689a314777bee82c6

            SHA256

            51f2cbfbb20cdc16c3956109912e6ccc944756eb34da9ad0c130707e00e61526

            SHA512

            0b59e0bdfd9fcc160c73aa9d46982930c10c701a1a1b3e90f935b6960284d918768acf06b24aee4fb5d28f09890a2f63158cfadf9864d79aaca683b7b712fd7a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f1481d2c6c0c90cf71652018466d78df

            SHA1

            125d52fe47fda77c944e2f022d7e0d7a3a3a90d3

            SHA256

            745344e00b829d3b54d40d375b11571adfef6a501eba6546da014e0e491603d2

            SHA512

            72e5485014a75c0c1fea55eb6786625b667609c868f43794148eef0d43fd246597cc8230b91c895c345e39c86c4d52d5edd39946f2c0c2d1cf1b154aebfdce2d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f1481d2c6c0c90cf71652018466d78df

            SHA1

            125d52fe47fda77c944e2f022d7e0d7a3a3a90d3

            SHA256

            745344e00b829d3b54d40d375b11571adfef6a501eba6546da014e0e491603d2

            SHA512

            72e5485014a75c0c1fea55eb6786625b667609c868f43794148eef0d43fd246597cc8230b91c895c345e39c86c4d52d5edd39946f2c0c2d1cf1b154aebfdce2d

          • \Users\Admin\AppData\Local\Temp\nst9C71.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst9C71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9C71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9C71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst9C71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ee6c4ed3340335a2daafe3d7c1073c2f

            SHA1

            910dbf1c1d2ae3898c27f4b6d7903ddee7ff221b

            SHA256

            a1949c0aeba89c4e2c77c2135010e3d47df2c7cd4eec7f117a1b1768d59e828f

            SHA512

            e9969d3e1032dedae97d85b28f2d9bcf7a9836e7da0227734631af0f386b6d6c2cc289d69aef997fe56b129ab6027044db2b03738cb21d5457afb9b0358f1cb8

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ee6c4ed3340335a2daafe3d7c1073c2f

            SHA1

            910dbf1c1d2ae3898c27f4b6d7903ddee7ff221b

            SHA256

            a1949c0aeba89c4e2c77c2135010e3d47df2c7cd4eec7f117a1b1768d59e828f

            SHA512

            e9969d3e1032dedae97d85b28f2d9bcf7a9836e7da0227734631af0f386b6d6c2cc289d69aef997fe56b129ab6027044db2b03738cb21d5457afb9b0358f1cb8

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ee6c4ed3340335a2daafe3d7c1073c2f

            SHA1

            910dbf1c1d2ae3898c27f4b6d7903ddee7ff221b

            SHA256

            a1949c0aeba89c4e2c77c2135010e3d47df2c7cd4eec7f117a1b1768d59e828f

            SHA512

            e9969d3e1032dedae97d85b28f2d9bcf7a9836e7da0227734631af0f386b6d6c2cc289d69aef997fe56b129ab6027044db2b03738cb21d5457afb9b0358f1cb8

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            bee8087f3e3be3f13ea7f9f4a4435aab

            SHA1

            c0efd0eb66f488d706d6f6f3e3c16aef8c5bea83

            SHA256

            4ce5e2c6fb2746e2d73aae08b0a31cbae5a1a9a41ecb031e1a5eb2b4b95fff7f

            SHA512

            5851205a11919e4ac82a43e584c6a672bb39f788ab63e424a46ddce4ea4a2dc3818ca675adfcffbd88e546a437f6b4e73fa0415e692f15b3377c8e57f9a4f592

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            bee8087f3e3be3f13ea7f9f4a4435aab

            SHA1

            c0efd0eb66f488d706d6f6f3e3c16aef8c5bea83

            SHA256

            4ce5e2c6fb2746e2d73aae08b0a31cbae5a1a9a41ecb031e1a5eb2b4b95fff7f

            SHA512

            5851205a11919e4ac82a43e584c6a672bb39f788ab63e424a46ddce4ea4a2dc3818ca675adfcffbd88e546a437f6b4e73fa0415e692f15b3377c8e57f9a4f592

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            25580ae1136d75fb2bc516fc37fff385

            SHA1

            b9cac3ac676e2752b93785719772cba026f1a4b6

            SHA256

            ccdd53920480ead795bdd87e5858610db9a4e26da32daab16483aa9c5060ca0d

            SHA512

            b269502a92cf73efb76aa781c6f2f180e9be8ad2b9a1431860b0352941b00693026055ab293d15f6f80abffb10c60f331d27d47046f8aed08cbcfe77de4a396d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            1bbd96e34ff6cd48dfd7616905888704

            SHA1

            f339f8195c105f2760004fa689a314777bee82c6

            SHA256

            51f2cbfbb20cdc16c3956109912e6ccc944756eb34da9ad0c130707e00e61526

            SHA512

            0b59e0bdfd9fcc160c73aa9d46982930c10c701a1a1b3e90f935b6960284d918768acf06b24aee4fb5d28f09890a2f63158cfadf9864d79aaca683b7b712fd7a

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f1481d2c6c0c90cf71652018466d78df

            SHA1

            125d52fe47fda77c944e2f022d7e0d7a3a3a90d3

            SHA256

            745344e00b829d3b54d40d375b11571adfef6a501eba6546da014e0e491603d2

            SHA512

            72e5485014a75c0c1fea55eb6786625b667609c868f43794148eef0d43fd246597cc8230b91c895c345e39c86c4d52d5edd39946f2c0c2d1cf1b154aebfdce2d

          • memory/268-62-0x0000000000000000-mapping.dmp

          • memory/316-81-0x0000000000000000-mapping.dmp

          • memory/544-58-0x0000000000000000-mapping.dmp

          • memory/816-59-0x0000000000000000-mapping.dmp

          • memory/1160-61-0x0000000000000000-mapping.dmp

          • memory/1512-87-0x0000000000000000-mapping.dmp

          • memory/1604-80-0x0000000000000000-mapping.dmp

          • memory/1612-86-0x0000000000000000-mapping.dmp

          • memory/1824-76-0x0000000000000000-mapping.dmp

          • memory/1932-70-0x0000000000000000-mapping.dmp

          • memory/1956-54-0x0000000076391000-0x0000000076393000-memory.dmp

            Filesize

            8KB

          • memory/1956-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1956-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2040-64-0x0000000000000000-mapping.dmp