Analysis

  • max time kernel
    91s
  • max time network
    134s
  • 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 10:56

General

  • Target

    66d85ee26e41c689c5de3db43efbdc15c1b508f93a06ed082619dd9b80811da6.exe

  • Size

    445KB

  • MD5

    3038278aaacbf1e291b5e7a5f4b54088

  • SHA1

    92a1f065c30aac4b41b96d760286dd4c3187a31b

  • SHA256

    66d85ee26e41c689c5de3db43efbdc15c1b508f93a06ed082619dd9b80811da6

  • SHA512

    fedc144c1f6b00733858f7de01b6c012105207e069b8baeb43823b03442f6fd3b7674d0e8f4cd274ee4462928bee7e8fe7c23481c89947196aa587b8663e3d51

  • SSDEEP

    12288:NpCfHTCCzKvXcCPbHEg+v4bChwkv7tFulw1E5Hi2GkTPZqj:NpCfHTCCzKfcC7EgnbChwkvhF/IGkTMj

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\66d85ee26e41c689c5de3db43efbdc15c1b508f93a06ed082619dd9b80811da6.exe
    "C:\Users\Admin\AppData\Local\Temp\66d85ee26e41c689c5de3db43efbdc15c1b508f93a06ed082619dd9b80811da6.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:4264
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3756
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:936
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1412
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1872
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4868
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4664
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1508
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4392
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4084
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1560
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2176
          • 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:948
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:5048

          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:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nspEE8D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            106KB

            MD5

            ad3e2a70ef8ea753752192e5a6712d65

            SHA1

            6df95d18441193124842ed24f346b15435c31f68

            SHA256

            8ae3a35b1a8ec84709eb4379d47e6857785ebfcb85767b0df786e6c3e98a2dbf

            SHA512

            3a01634963484340a7342b9393512f18751afce9e5aa072bd144c31f3ea3e515d44afd24ea070d6e2064ea209b924b8c26f31818c1713ef2c40e9cd499c055cf

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

            106KB

            MD5

            ad3e2a70ef8ea753752192e5a6712d65

            SHA1

            6df95d18441193124842ed24f346b15435c31f68

            SHA256

            8ae3a35b1a8ec84709eb4379d47e6857785ebfcb85767b0df786e6c3e98a2dbf

            SHA512

            3a01634963484340a7342b9393512f18751afce9e5aa072bd144c31f3ea3e515d44afd24ea070d6e2064ea209b924b8c26f31818c1713ef2c40e9cd499c055cf

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

            106KB

            MD5

            ad3e2a70ef8ea753752192e5a6712d65

            SHA1

            6df95d18441193124842ed24f346b15435c31f68

            SHA256

            8ae3a35b1a8ec84709eb4379d47e6857785ebfcb85767b0df786e6c3e98a2dbf

            SHA512

            3a01634963484340a7342b9393512f18751afce9e5aa072bd144c31f3ea3e515d44afd24ea070d6e2064ea209b924b8c26f31818c1713ef2c40e9cd499c055cf

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

            106KB

            MD5

            ad3e2a70ef8ea753752192e5a6712d65

            SHA1

            6df95d18441193124842ed24f346b15435c31f68

            SHA256

            8ae3a35b1a8ec84709eb4379d47e6857785ebfcb85767b0df786e6c3e98a2dbf

            SHA512

            3a01634963484340a7342b9393512f18751afce9e5aa072bd144c31f3ea3e515d44afd24ea070d6e2064ea209b924b8c26f31818c1713ef2c40e9cd499c055cf

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

            241KB

            MD5

            fb271275df9a484fbe0ea95987447845

            SHA1

            ca558179fce6475a01e225275d587ca19aba8203

            SHA256

            45b5471831e943c5b07d1e6817ee83eaca6811274b2850d74bb2409b531d0394

            SHA512

            6a2d1f200cb7351f0ae4e57b83f5b524d8cb9fa87da427aa13610a1e887d63a4b18240e28424e9d3c05c275fce7f92c57eed86d5e7de78ca5f251fbb7d4ec329

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

            241KB

            MD5

            fb271275df9a484fbe0ea95987447845

            SHA1

            ca558179fce6475a01e225275d587ca19aba8203

            SHA256

            45b5471831e943c5b07d1e6817ee83eaca6811274b2850d74bb2409b531d0394

            SHA512

            6a2d1f200cb7351f0ae4e57b83f5b524d8cb9fa87da427aa13610a1e887d63a4b18240e28424e9d3c05c275fce7f92c57eed86d5e7de78ca5f251fbb7d4ec329

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

            241KB

            MD5

            fb271275df9a484fbe0ea95987447845

            SHA1

            ca558179fce6475a01e225275d587ca19aba8203

            SHA256

            45b5471831e943c5b07d1e6817ee83eaca6811274b2850d74bb2409b531d0394

            SHA512

            6a2d1f200cb7351f0ae4e57b83f5b524d8cb9fa87da427aa13610a1e887d63a4b18240e28424e9d3c05c275fce7f92c57eed86d5e7de78ca5f251fbb7d4ec329

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

            108KB

            MD5

            fa02b3a73eb60acd33bb3617c5a981d0

            SHA1

            24c6ba56c8dc7878cd44e594d4de10a74232aea0

            SHA256

            7f1322e59c58029f8fe93f16127470143ce1610f18bc6a5055a583e3337fe480

            SHA512

            72442360f725d10fd255d39b25be64c571d57bb83ee6c51aea590980b6817983d285dfdda7c087755175e29d876e4b1bddf6b1b9b2bbad8798948893d906b097

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

            108KB

            MD5

            fa02b3a73eb60acd33bb3617c5a981d0

            SHA1

            24c6ba56c8dc7878cd44e594d4de10a74232aea0

            SHA256

            7f1322e59c58029f8fe93f16127470143ce1610f18bc6a5055a583e3337fe480

            SHA512

            72442360f725d10fd255d39b25be64c571d57bb83ee6c51aea590980b6817983d285dfdda7c087755175e29d876e4b1bddf6b1b9b2bbad8798948893d906b097

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

            176KB

            MD5

            30372de662bced1e94b5c96dd1bd430f

            SHA1

            47e143d4ccd8dadaba940cf4fca390e280d73330

            SHA256

            f16b1785a2a382e7ee1eacd78283aac8e3b755a8836a51cda118a36f1e1c7aa1

            SHA512

            7498ccf0cb9cdac00453dd515ccc9e68ae1b3b40f03c717518c8c6c6bba076cb67c07d325bb6ffe5453747772aeeca16e340fd5a089d3fc33516f59ed15a1d47

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

            176KB

            MD5

            30372de662bced1e94b5c96dd1bd430f

            SHA1

            47e143d4ccd8dadaba940cf4fca390e280d73330

            SHA256

            f16b1785a2a382e7ee1eacd78283aac8e3b755a8836a51cda118a36f1e1c7aa1

            SHA512

            7498ccf0cb9cdac00453dd515ccc9e68ae1b3b40f03c717518c8c6c6bba076cb67c07d325bb6ffe5453747772aeeca16e340fd5a089d3fc33516f59ed15a1d47

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

            176KB

            MD5

            30372de662bced1e94b5c96dd1bd430f

            SHA1

            47e143d4ccd8dadaba940cf4fca390e280d73330

            SHA256

            f16b1785a2a382e7ee1eacd78283aac8e3b755a8836a51cda118a36f1e1c7aa1

            SHA512

            7498ccf0cb9cdac00453dd515ccc9e68ae1b3b40f03c717518c8c6c6bba076cb67c07d325bb6ffe5453747772aeeca16e340fd5a089d3fc33516f59ed15a1d47

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

            158KB

            MD5

            58c8087d4cbd78dcb29c667e93d24b3f

            SHA1

            a2493127053b9a98850fc9c096e239125791d075

            SHA256

            39b8befff48bf78b635be988a9110505dcfe1639fef959cfbc0163e1ea9bf9a5

            SHA512

            0f292632070fb09649e9b88ca70ad2e87ee8c3a9de5282794088a9630e99f8c9b1ecd8864b41f926ebd9451cd623ca300f97593ec2ec3bedda9bc82553835c45

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

            158KB

            MD5

            58c8087d4cbd78dcb29c667e93d24b3f

            SHA1

            a2493127053b9a98850fc9c096e239125791d075

            SHA256

            39b8befff48bf78b635be988a9110505dcfe1639fef959cfbc0163e1ea9bf9a5

            SHA512

            0f292632070fb09649e9b88ca70ad2e87ee8c3a9de5282794088a9630e99f8c9b1ecd8864b41f926ebd9451cd623ca300f97593ec2ec3bedda9bc82553835c45

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

            158KB

            MD5

            58c8087d4cbd78dcb29c667e93d24b3f

            SHA1

            a2493127053b9a98850fc9c096e239125791d075

            SHA256

            39b8befff48bf78b635be988a9110505dcfe1639fef959cfbc0163e1ea9bf9a5

            SHA512

            0f292632070fb09649e9b88ca70ad2e87ee8c3a9de5282794088a9630e99f8c9b1ecd8864b41f926ebd9451cd623ca300f97593ec2ec3bedda9bc82553835c45

          • memory/936-136-0x0000000000000000-mapping.dmp
          • memory/1412-139-0x0000000000000000-mapping.dmp
          • memory/1508-152-0x0000000000000000-mapping.dmp
          • memory/1560-164-0x0000000000000000-mapping.dmp
          • memory/1872-140-0x0000000000000000-mapping.dmp
          • memory/2176-165-0x0000000000000000-mapping.dmp
          • memory/3756-135-0x0000000000000000-mapping.dmp
          • memory/4084-158-0x0000000000000000-mapping.dmp
          • memory/4392-157-0x0000000000000000-mapping.dmp
          • memory/4664-146-0x0000000000000000-mapping.dmp
          • memory/4868-141-0x0000000000000000-mapping.dmp