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 10:21

General

  • Target

    7cf8c532153b7d4339f07f4ad65f837b6d86511e5d5355c2e410baec2a0c9946.exe

  • Size

    601KB

  • MD5

    2652c0362618e778a447d80854f46dd2

  • SHA1

    66ce5eaac08bc69805829109b2bb4243a8c2aeb2

  • SHA256

    7cf8c532153b7d4339f07f4ad65f837b6d86511e5d5355c2e410baec2a0c9946

  • SHA512

    4c636bf862096f0f31591159318944b884ba922d6a7df299ab9044be22ae0a27f0b8e12eeaf28aa52e183e0e40b93ebabcbc0932dd224e7787ad7f84421a83f3

  • SSDEEP

    12288:eIny5DYT44k7ghiFUZlpEC2O+LQXI3HAr/WS/Fc:AUT44qghPZl5yLK/zFc

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\7cf8c532153b7d4339f07f4ad65f837b6d86511e5d5355c2e410baec2a0c9946.exe
    "C:\Users\Admin\AppData\Local\Temp\7cf8c532153b7d4339f07f4ad65f837b6d86511e5d5355c2e410baec2a0c9946.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:1652
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:960
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1584
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1252
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1548
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1660
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1712
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1204
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1196
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:888
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1656
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:792
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1364

          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

            7b078d2bf9811105ba0e6777008d6c95

            SHA1

            74eb3da7a7f8168267e774d726d5792434907bbd

            SHA256

            6a547af1f73eac53447878b64fe75377215191c86c1a5781809fbb658027d77e

            SHA512

            bea14abd9c3cc373eaafb8c803587e4ae0df84d3333ae2945d1a4913f2a16243b1cc6e2eca6e98ad9ea44f5c0a8432cd2590aa9523dc9b76ec41de34d56a7a1b

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

            241KB

            MD5

            a3d42e9dd4784a71bec75f41a928b555

            SHA1

            9b93d163968829559f6db16837be699de0d2775c

            SHA256

            9a5cea1039ff79a01722a04de6c01e3d42610cadfcc1efb237643d59a6c8827e

            SHA512

            fb08e52f2fefacd247e2bcc34c75d16a5f2d8f51bf8e4877748e750fae988214c63e62c424faa1e1f7e762ad00f737c8c799109766e93d1111ce7763c8f3f8b4

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

            108KB

            MD5

            cc574be6856093d0a862103158e2ba36

            SHA1

            6337c67b95de1f9cd67aa7cd6765fc96340a336e

            SHA256

            5e9ada9b45015ffd0261ad7f826a67bfb52c8058f08672a32db80b9350342ee2

            SHA512

            c5cccd9b9937ac08d8e08cef05b5356700fa5549c3be14752153b265dbdefc5a65402bfff1b2e2ebdc74a186ca5e0ccaa71c36efdfa98bf9aee71d6ce6fe3766

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

            176KB

            MD5

            90982dd0d4846209433cb10de7ea47b3

            SHA1

            dc160d6ac042fa3ed4c9c46358eaf3c23806d593

            SHA256

            add277bf08bd4b9f0573b18f1bca217693171ea8ebc7025b4d07feec04c815cf

            SHA512

            9340064e6d9aeab4061576959d740bf91d8557e7eeefb9a77d3c476b311e6b3d80d0324518bf30950127bb7422f3bb3652684e81b48f5d82273e9ffdf88c6cb9

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

            176KB

            MD5

            90982dd0d4846209433cb10de7ea47b3

            SHA1

            dc160d6ac042fa3ed4c9c46358eaf3c23806d593

            SHA256

            add277bf08bd4b9f0573b18f1bca217693171ea8ebc7025b4d07feec04c815cf

            SHA512

            9340064e6d9aeab4061576959d740bf91d8557e7eeefb9a77d3c476b311e6b3d80d0324518bf30950127bb7422f3bb3652684e81b48f5d82273e9ffdf88c6cb9

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

            158KB

            MD5

            0118ad1f4e4e66ac159925e411f897aa

            SHA1

            98444b33a6ec3c1c9b53b50cc2d996f54877ac5c

            SHA256

            6bf753fa9ee004ede09a7202decee59dd328ee62d7c2d0a89d3d66ad473dbed2

            SHA512

            ed5414adb10907b44df22e9f7a3fdd19ee8151d1f8774dfdd96208d5484cb3d34e95419d0be44ecbc31565de469dbbbb24c29ac751f3b1b3db169d7345a66055

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

            158KB

            MD5

            0118ad1f4e4e66ac159925e411f897aa

            SHA1

            98444b33a6ec3c1c9b53b50cc2d996f54877ac5c

            SHA256

            6bf753fa9ee004ede09a7202decee59dd328ee62d7c2d0a89d3d66ad473dbed2

            SHA512

            ed5414adb10907b44df22e9f7a3fdd19ee8151d1f8774dfdd96208d5484cb3d34e95419d0be44ecbc31565de469dbbbb24c29ac751f3b1b3db169d7345a66055

          • \Users\Admin\AppData\Local\Temp\nstF04B.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstF04B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstF04B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstF04B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstF04B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            7b078d2bf9811105ba0e6777008d6c95

            SHA1

            74eb3da7a7f8168267e774d726d5792434907bbd

            SHA256

            6a547af1f73eac53447878b64fe75377215191c86c1a5781809fbb658027d77e

            SHA512

            bea14abd9c3cc373eaafb8c803587e4ae0df84d3333ae2945d1a4913f2a16243b1cc6e2eca6e98ad9ea44f5c0a8432cd2590aa9523dc9b76ec41de34d56a7a1b

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            7b078d2bf9811105ba0e6777008d6c95

            SHA1

            74eb3da7a7f8168267e774d726d5792434907bbd

            SHA256

            6a547af1f73eac53447878b64fe75377215191c86c1a5781809fbb658027d77e

            SHA512

            bea14abd9c3cc373eaafb8c803587e4ae0df84d3333ae2945d1a4913f2a16243b1cc6e2eca6e98ad9ea44f5c0a8432cd2590aa9523dc9b76ec41de34d56a7a1b

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            7b078d2bf9811105ba0e6777008d6c95

            SHA1

            74eb3da7a7f8168267e774d726d5792434907bbd

            SHA256

            6a547af1f73eac53447878b64fe75377215191c86c1a5781809fbb658027d77e

            SHA512

            bea14abd9c3cc373eaafb8c803587e4ae0df84d3333ae2945d1a4913f2a16243b1cc6e2eca6e98ad9ea44f5c0a8432cd2590aa9523dc9b76ec41de34d56a7a1b

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            a3d42e9dd4784a71bec75f41a928b555

            SHA1

            9b93d163968829559f6db16837be699de0d2775c

            SHA256

            9a5cea1039ff79a01722a04de6c01e3d42610cadfcc1efb237643d59a6c8827e

            SHA512

            fb08e52f2fefacd247e2bcc34c75d16a5f2d8f51bf8e4877748e750fae988214c63e62c424faa1e1f7e762ad00f737c8c799109766e93d1111ce7763c8f3f8b4

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            a3d42e9dd4784a71bec75f41a928b555

            SHA1

            9b93d163968829559f6db16837be699de0d2775c

            SHA256

            9a5cea1039ff79a01722a04de6c01e3d42610cadfcc1efb237643d59a6c8827e

            SHA512

            fb08e52f2fefacd247e2bcc34c75d16a5f2d8f51bf8e4877748e750fae988214c63e62c424faa1e1f7e762ad00f737c8c799109766e93d1111ce7763c8f3f8b4

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            cc574be6856093d0a862103158e2ba36

            SHA1

            6337c67b95de1f9cd67aa7cd6765fc96340a336e

            SHA256

            5e9ada9b45015ffd0261ad7f826a67bfb52c8058f08672a32db80b9350342ee2

            SHA512

            c5cccd9b9937ac08d8e08cef05b5356700fa5549c3be14752153b265dbdefc5a65402bfff1b2e2ebdc74a186ca5e0ccaa71c36efdfa98bf9aee71d6ce6fe3766

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            90982dd0d4846209433cb10de7ea47b3

            SHA1

            dc160d6ac042fa3ed4c9c46358eaf3c23806d593

            SHA256

            add277bf08bd4b9f0573b18f1bca217693171ea8ebc7025b4d07feec04c815cf

            SHA512

            9340064e6d9aeab4061576959d740bf91d8557e7eeefb9a77d3c476b311e6b3d80d0324518bf30950127bb7422f3bb3652684e81b48f5d82273e9ffdf88c6cb9

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            0118ad1f4e4e66ac159925e411f897aa

            SHA1

            98444b33a6ec3c1c9b53b50cc2d996f54877ac5c

            SHA256

            6bf753fa9ee004ede09a7202decee59dd328ee62d7c2d0a89d3d66ad473dbed2

            SHA512

            ed5414adb10907b44df22e9f7a3fdd19ee8151d1f8774dfdd96208d5484cb3d34e95419d0be44ecbc31565de469dbbbb24c29ac751f3b1b3db169d7345a66055

          • memory/888-87-0x0000000000000000-mapping.dmp
          • memory/960-58-0x0000000000000000-mapping.dmp
          • memory/1196-82-0x0000000000000000-mapping.dmp
          • memory/1204-81-0x0000000000000000-mapping.dmp
          • memory/1252-62-0x0000000000000000-mapping.dmp
          • memory/1548-64-0x0000000000000000-mapping.dmp
          • memory/1584-61-0x0000000000000000-mapping.dmp
          • memory/1652-54-0x00000000758C1000-0x00000000758C3000-memory.dmp
            Filesize

            8KB

          • memory/1652-79-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1652-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1652-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1656-88-0x0000000000000000-mapping.dmp
          • memory/1660-70-0x0000000000000000-mapping.dmp
          • memory/1712-76-0x0000000000000000-mapping.dmp
          • memory/2028-57-0x0000000000000000-mapping.dmp