Analysis

  • max time kernel
    204s
  • 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 10:52

General

  • Target

    c7e7951831ebec2c40b80c85254524b42dffb8b302e5e1cc60c666753b8b0603.exe

  • Size

    445KB

  • MD5

    ad0884095b0c190aabd6ca8b05d19f82

  • SHA1

    60fa1bd13f03e08fa8eb247119d1905bc24f7da5

  • SHA256

    c7e7951831ebec2c40b80c85254524b42dffb8b302e5e1cc60c666753b8b0603

  • SHA512

    08ab9b0861bc8596f70a5b4b934c64b1a03f823a1b5a6fd081350b2cfee90c26b09bb2fffc95490ce3f8b736b9e05dd7c489ffa5f3fececced97a1f5a5480968

  • SSDEEP

    12288:qERs0UVUzBknm+H9I7oSkD3ZgYj9jtSJf:qss0iMZ29vDJ8Jf

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 12 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 WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c7e7951831ebec2c40b80c85254524b42dffb8b302e5e1cc60c666753b8b0603.exe
    "C:\Users\Admin\AppData\Local\Temp\c7e7951831ebec2c40b80c85254524b42dffb8b302e5e1cc60c666753b8b0603.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:1736
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:872
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:520
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:576
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:560
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1328
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1792
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1624
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2012
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1636
        • C:\Windows\SysWOW64\nethtsrv.exe
          C:\Windows\SysWOW64\nethtsrv.exe
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1964

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\SysWOW64\hfnapi.dll

          Filesize

          106KB

          MD5

          dc18851558458f64387ae18968ebf68c

          SHA1

          fd83b8612ffa6654b91b189f059110c60cf86458

          SHA256

          1bfecc822300c4574e4f5b1a4d40d8e1ad0446f77103b0ca92b28b99da1c0428

          SHA512

          53260fe4cdd65f508a9f17836dd596e87f192a00fd4f3a95ebb0f5184cf93e19058105e23b318d5e4f34cecdeb176624bd8320b4f13a6187cf8f407c8c6680ac

        • C:\Windows\SysWOW64\hfpapi.dll

          Filesize

          241KB

          MD5

          19a9f844bb36774bb5241beea93a9e41

          SHA1

          00bfc2f865946f1e8d9def6b9a0f7e4b3909e0b1

          SHA256

          c782dad7b0ee39f8c07aa8c5bd3bccc960e7dec0692e631d8b4c8ed534a053fb

          SHA512

          178241b187a4f8116bb13e80caa9ad9bcd1dc7e0c43646d75b893115c2e2ffdb06c62be32aa5b32699269af46f9c4672028e7b6af0721e33f42da34b1ebe1923

        • C:\Windows\SysWOW64\installd.exe

          Filesize

          108KB

          MD5

          ea0a7f5c825464502e8ce117891039ba

          SHA1

          cca33dc1a8a46c47c8f9720a166299d903ae1783

          SHA256

          343345c66a67975bd36f7d5ece106880cf4650c170072457bda3bde8e283115e

          SHA512

          fc85308f4a37dd0ad65c416ff6b41f2c7823b796320325abf93926556b8cef4aaaa861fc25b060350795be1347f0df89f61d3c236555be8c3840dc9a7a6bbfac

        • C:\Windows\SysWOW64\nethtsrv.exe

          Filesize

          176KB

          MD5

          43d39aac29ed685551f8e8c6f1107667

          SHA1

          522d1231533646534b130a7ca7237b6ac30d523a

          SHA256

          06b1665a9fa7d71cf6449822d785bdf07c011b162d83f5ffdd3ca1693593fa34

          SHA512

          03ba2d208fb09760917f92a56b24b0263114d322a68f801caec1fc33b1d5bcc3358a546345d62f43e661176787a7a27eb2686c650c4ee9913b9b70d63773bee0

        • C:\Windows\SysWOW64\nethtsrv.exe

          Filesize

          176KB

          MD5

          43d39aac29ed685551f8e8c6f1107667

          SHA1

          522d1231533646534b130a7ca7237b6ac30d523a

          SHA256

          06b1665a9fa7d71cf6449822d785bdf07c011b162d83f5ffdd3ca1693593fa34

          SHA512

          03ba2d208fb09760917f92a56b24b0263114d322a68f801caec1fc33b1d5bcc3358a546345d62f43e661176787a7a27eb2686c650c4ee9913b9b70d63773bee0

        • C:\Windows\SysWOW64\netupdsrv.exe

          Filesize

          158KB

          MD5

          aa4c3c2118c81d8d7b053853261839d2

          SHA1

          621817332fafbf103cf66560010f2a98c8d5b3e8

          SHA256

          ed5fedf3a2bf5ca9a213aff1017dd2cae96add7e6a08f44c6495e2fa28cf9cbb

          SHA512

          05d1ee2c3ce2df80f38407562a0be34ab210b52cf63842d706de97546e0a054cf7610ff43b56cbc0be512c0d4736259bd03dc2d9c8638b5da27904b53d02c342

        • \Users\Admin\AppData\Local\Temp\nse2E92.tmp\System.dll

          Filesize

          11KB

          MD5

          c17103ae9072a06da581dec998343fc1

          SHA1

          b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

          SHA256

          dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

          SHA512

          d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

        • \Users\Admin\AppData\Local\Temp\nse2E92.tmp\nsExec.dll

          Filesize

          6KB

          MD5

          acc2b699edfea5bf5aae45aba3a41e96

          SHA1

          d2accf4d494e43ceb2cff69abe4dd17147d29cc2

          SHA256

          168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

          SHA512

          e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

        • \Users\Admin\AppData\Local\Temp\nse2E92.tmp\nsExec.dll

          Filesize

          6KB

          MD5

          acc2b699edfea5bf5aae45aba3a41e96

          SHA1

          d2accf4d494e43ceb2cff69abe4dd17147d29cc2

          SHA256

          168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

          SHA512

          e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

        • \Users\Admin\AppData\Local\Temp\nse2E92.tmp\nsExec.dll

          Filesize

          6KB

          MD5

          acc2b699edfea5bf5aae45aba3a41e96

          SHA1

          d2accf4d494e43ceb2cff69abe4dd17147d29cc2

          SHA256

          168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

          SHA512

          e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

        • \Windows\SysWOW64\hfnapi.dll

          Filesize

          106KB

          MD5

          dc18851558458f64387ae18968ebf68c

          SHA1

          fd83b8612ffa6654b91b189f059110c60cf86458

          SHA256

          1bfecc822300c4574e4f5b1a4d40d8e1ad0446f77103b0ca92b28b99da1c0428

          SHA512

          53260fe4cdd65f508a9f17836dd596e87f192a00fd4f3a95ebb0f5184cf93e19058105e23b318d5e4f34cecdeb176624bd8320b4f13a6187cf8f407c8c6680ac

        • \Windows\SysWOW64\hfnapi.dll

          Filesize

          106KB

          MD5

          dc18851558458f64387ae18968ebf68c

          SHA1

          fd83b8612ffa6654b91b189f059110c60cf86458

          SHA256

          1bfecc822300c4574e4f5b1a4d40d8e1ad0446f77103b0ca92b28b99da1c0428

          SHA512

          53260fe4cdd65f508a9f17836dd596e87f192a00fd4f3a95ebb0f5184cf93e19058105e23b318d5e4f34cecdeb176624bd8320b4f13a6187cf8f407c8c6680ac

        • \Windows\SysWOW64\hfnapi.dll

          Filesize

          106KB

          MD5

          dc18851558458f64387ae18968ebf68c

          SHA1

          fd83b8612ffa6654b91b189f059110c60cf86458

          SHA256

          1bfecc822300c4574e4f5b1a4d40d8e1ad0446f77103b0ca92b28b99da1c0428

          SHA512

          53260fe4cdd65f508a9f17836dd596e87f192a00fd4f3a95ebb0f5184cf93e19058105e23b318d5e4f34cecdeb176624bd8320b4f13a6187cf8f407c8c6680ac

        • \Windows\SysWOW64\hfpapi.dll

          Filesize

          241KB

          MD5

          19a9f844bb36774bb5241beea93a9e41

          SHA1

          00bfc2f865946f1e8d9def6b9a0f7e4b3909e0b1

          SHA256

          c782dad7b0ee39f8c07aa8c5bd3bccc960e7dec0692e631d8b4c8ed534a053fb

          SHA512

          178241b187a4f8116bb13e80caa9ad9bcd1dc7e0c43646d75b893115c2e2ffdb06c62be32aa5b32699269af46f9c4672028e7b6af0721e33f42da34b1ebe1923

        • \Windows\SysWOW64\hfpapi.dll

          Filesize

          241KB

          MD5

          19a9f844bb36774bb5241beea93a9e41

          SHA1

          00bfc2f865946f1e8d9def6b9a0f7e4b3909e0b1

          SHA256

          c782dad7b0ee39f8c07aa8c5bd3bccc960e7dec0692e631d8b4c8ed534a053fb

          SHA512

          178241b187a4f8116bb13e80caa9ad9bcd1dc7e0c43646d75b893115c2e2ffdb06c62be32aa5b32699269af46f9c4672028e7b6af0721e33f42da34b1ebe1923

        • \Windows\SysWOW64\installd.exe

          Filesize

          108KB

          MD5

          ea0a7f5c825464502e8ce117891039ba

          SHA1

          cca33dc1a8a46c47c8f9720a166299d903ae1783

          SHA256

          343345c66a67975bd36f7d5ece106880cf4650c170072457bda3bde8e283115e

          SHA512

          fc85308f4a37dd0ad65c416ff6b41f2c7823b796320325abf93926556b8cef4aaaa861fc25b060350795be1347f0df89f61d3c236555be8c3840dc9a7a6bbfac

        • \Windows\SysWOW64\nethtsrv.exe

          Filesize

          176KB

          MD5

          43d39aac29ed685551f8e8c6f1107667

          SHA1

          522d1231533646534b130a7ca7237b6ac30d523a

          SHA256

          06b1665a9fa7d71cf6449822d785bdf07c011b162d83f5ffdd3ca1693593fa34

          SHA512

          03ba2d208fb09760917f92a56b24b0263114d322a68f801caec1fc33b1d5bcc3358a546345d62f43e661176787a7a27eb2686c650c4ee9913b9b70d63773bee0

        • \Windows\SysWOW64\netupdsrv.exe

          Filesize

          158KB

          MD5

          aa4c3c2118c81d8d7b053853261839d2

          SHA1

          621817332fafbf103cf66560010f2a98c8d5b3e8

          SHA256

          ed5fedf3a2bf5ca9a213aff1017dd2cae96add7e6a08f44c6495e2fa28cf9cbb

          SHA512

          05d1ee2c3ce2df80f38407562a0be34ab210b52cf63842d706de97546e0a054cf7610ff43b56cbc0be512c0d4736259bd03dc2d9c8638b5da27904b53d02c342

        • memory/520-58-0x0000000000000000-mapping.dmp

        • memory/560-61-0x0000000000000000-mapping.dmp

        • memory/576-60-0x0000000000000000-mapping.dmp

        • memory/872-57-0x0000000000000000-mapping.dmp

        • memory/1328-63-0x0000000000000000-mapping.dmp

        • memory/1624-75-0x0000000000000000-mapping.dmp

        • memory/1636-80-0x0000000000000000-mapping.dmp

        • memory/1736-54-0x0000000075D51000-0x0000000075D53000-memory.dmp

          Filesize

          8KB

        • memory/1792-69-0x0000000000000000-mapping.dmp

        • memory/2012-79-0x0000000000000000-mapping.dmp