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Analysis

  • max time kernel
    48s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 16:00

General

  • Target

    73d010b224b68c9e1372316b774a80ef9334ab1061d3114b7173e55c0bde2c4d.exe

  • Size

    832KB

  • MD5

    4b88606675ee9c7ad261ee215df054ec

  • SHA1

    798cc20db62b71c8d982efb29615eb6603ad6d19

  • SHA256

    73d010b224b68c9e1372316b774a80ef9334ab1061d3114b7173e55c0bde2c4d

  • SHA512

    0d77ed8b2dbea6c3ae770cfca71a2c6de809e76fba86a7523cde12a9bf2d24538c99e7a43e4b4eec537f388d9b0b7e98c495e904d57ad50bd68be7c79ddc13b1

  • SSDEEP

    24576:DrfGR2wDeRMTrcy5Ha7gRDViI2jv/Nny0ycn+:DYYRMTjrF2TwC+

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\73d010b224b68c9e1372316b774a80ef9334ab1061d3114b7173e55c0bde2c4d.exe
    "C:\Users\Admin\AppData\Local\Temp\73d010b224b68c9e1372316b774a80ef9334ab1061d3114b7173e55c0bde2c4d.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:944
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:836
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1400
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1176
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1464
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1672
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:588
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1668
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1568
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1832
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1936
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1432
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:988
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1908

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1d5e4208a9977e4f493ae9c6fb4c76da

            SHA1

            c0b373d4f78f79c74c175a251161e07f0a22dff3

            SHA256

            0f4dc929edcbb35a5037154a07a10bc4399f8754a44a844d34e31844bd5dbe0f

            SHA512

            9293631369835c65b0765e6fb04dc5285530320afc0d2e256af92f2bb5bed0d90d20eeab63f33af77a9334e47fc7d109f5b19bd2e9ac23a4d571d5c16e0d924f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            05e02f9908d0aa7bbb6421dddf60e341

            SHA1

            e10ed2b781e95a6ccc8da5b7cdc92be8b64310ef

            SHA256

            4d3ccc2809dfb3a1815c4304232cb8f3a732ade7b4b13d418ef33c46e2bf2419

            SHA512

            d6793112517783d006e36fba4a5d4f22643151f546811a7c10dc4742dca5f9df5822a5a7c18dfcc5565576941aea928998cc457d8a74f086f3c8c140fe2eec5f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            c3ed13c834dcff40e42fbf8d71de91ed

            SHA1

            de01adce48c1eba4c4a65d18d78beebd32eb44ea

            SHA256

            0288d566cc9bc9219a29dd0f5310f1493f1aa1847a6bf05c44a3e99e6bfa449b

            SHA512

            eed194bc4444fd0ad7976c29cc096841f36b72e21667c2b5dd914b1a4e4bbb36f0391b74b3f3265beaaa84084dabd2c0b186fd15f819bf23a854355ca3fe8973

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            f9db4d451b2d165b66238ee4b0fdec13

            SHA1

            3c403b495eedb80b653fe99b588968331c310a69

            SHA256

            149c889fea1f259070abff03c75615353277afe08f3d42abb86df4a73a55fd16

            SHA512

            811aab510c155893ef6352c92292323b175324485d5e542677ebfcbacc9052eeed2b4c1c3c1b824219752723163ea049d095004f29ae8c8b4be9da68b4f8b8f3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            f9db4d451b2d165b66238ee4b0fdec13

            SHA1

            3c403b495eedb80b653fe99b588968331c310a69

            SHA256

            149c889fea1f259070abff03c75615353277afe08f3d42abb86df4a73a55fd16

            SHA512

            811aab510c155893ef6352c92292323b175324485d5e542677ebfcbacc9052eeed2b4c1c3c1b824219752723163ea049d095004f29ae8c8b4be9da68b4f8b8f3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            dba019ff51a8bf6fe6803aaf9c5abf6c

            SHA1

            2314151be43fdb53c86567e4c7973eba41d084e2

            SHA256

            795f59f5df6727ea8bc54a1c2fd14ba7d4fdcf5b485369039488314a594a44c5

            SHA512

            b8d1c887400e3c27d3a9c56a44d079bc2539a4f05884f6b083b7ea0261075149f69274c4c7d4eb3c9bd62fd4b8786da90d418aa9ee3df76227315a34ad96e0e2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            dba019ff51a8bf6fe6803aaf9c5abf6c

            SHA1

            2314151be43fdb53c86567e4c7973eba41d084e2

            SHA256

            795f59f5df6727ea8bc54a1c2fd14ba7d4fdcf5b485369039488314a594a44c5

            SHA512

            b8d1c887400e3c27d3a9c56a44d079bc2539a4f05884f6b083b7ea0261075149f69274c4c7d4eb3c9bd62fd4b8786da90d418aa9ee3df76227315a34ad96e0e2

          • \Users\Admin\AppData\Local\Temp\nst4FA9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst4FA9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4FA9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4FA9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4FA9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1d5e4208a9977e4f493ae9c6fb4c76da

            SHA1

            c0b373d4f78f79c74c175a251161e07f0a22dff3

            SHA256

            0f4dc929edcbb35a5037154a07a10bc4399f8754a44a844d34e31844bd5dbe0f

            SHA512

            9293631369835c65b0765e6fb04dc5285530320afc0d2e256af92f2bb5bed0d90d20eeab63f33af77a9334e47fc7d109f5b19bd2e9ac23a4d571d5c16e0d924f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1d5e4208a9977e4f493ae9c6fb4c76da

            SHA1

            c0b373d4f78f79c74c175a251161e07f0a22dff3

            SHA256

            0f4dc929edcbb35a5037154a07a10bc4399f8754a44a844d34e31844bd5dbe0f

            SHA512

            9293631369835c65b0765e6fb04dc5285530320afc0d2e256af92f2bb5bed0d90d20eeab63f33af77a9334e47fc7d109f5b19bd2e9ac23a4d571d5c16e0d924f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1d5e4208a9977e4f493ae9c6fb4c76da

            SHA1

            c0b373d4f78f79c74c175a251161e07f0a22dff3

            SHA256

            0f4dc929edcbb35a5037154a07a10bc4399f8754a44a844d34e31844bd5dbe0f

            SHA512

            9293631369835c65b0765e6fb04dc5285530320afc0d2e256af92f2bb5bed0d90d20eeab63f33af77a9334e47fc7d109f5b19bd2e9ac23a4d571d5c16e0d924f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            05e02f9908d0aa7bbb6421dddf60e341

            SHA1

            e10ed2b781e95a6ccc8da5b7cdc92be8b64310ef

            SHA256

            4d3ccc2809dfb3a1815c4304232cb8f3a732ade7b4b13d418ef33c46e2bf2419

            SHA512

            d6793112517783d006e36fba4a5d4f22643151f546811a7c10dc4742dca5f9df5822a5a7c18dfcc5565576941aea928998cc457d8a74f086f3c8c140fe2eec5f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            05e02f9908d0aa7bbb6421dddf60e341

            SHA1

            e10ed2b781e95a6ccc8da5b7cdc92be8b64310ef

            SHA256

            4d3ccc2809dfb3a1815c4304232cb8f3a732ade7b4b13d418ef33c46e2bf2419

            SHA512

            d6793112517783d006e36fba4a5d4f22643151f546811a7c10dc4742dca5f9df5822a5a7c18dfcc5565576941aea928998cc457d8a74f086f3c8c140fe2eec5f

          • \Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            c3ed13c834dcff40e42fbf8d71de91ed

            SHA1

            de01adce48c1eba4c4a65d18d78beebd32eb44ea

            SHA256

            0288d566cc9bc9219a29dd0f5310f1493f1aa1847a6bf05c44a3e99e6bfa449b

            SHA512

            eed194bc4444fd0ad7976c29cc096841f36b72e21667c2b5dd914b1a4e4bbb36f0391b74b3f3265beaaa84084dabd2c0b186fd15f819bf23a854355ca3fe8973

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            f9db4d451b2d165b66238ee4b0fdec13

            SHA1

            3c403b495eedb80b653fe99b588968331c310a69

            SHA256

            149c889fea1f259070abff03c75615353277afe08f3d42abb86df4a73a55fd16

            SHA512

            811aab510c155893ef6352c92292323b175324485d5e542677ebfcbacc9052eeed2b4c1c3c1b824219752723163ea049d095004f29ae8c8b4be9da68b4f8b8f3

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            dba019ff51a8bf6fe6803aaf9c5abf6c

            SHA1

            2314151be43fdb53c86567e4c7973eba41d084e2

            SHA256

            795f59f5df6727ea8bc54a1c2fd14ba7d4fdcf5b485369039488314a594a44c5

            SHA512

            b8d1c887400e3c27d3a9c56a44d079bc2539a4f05884f6b083b7ea0261075149f69274c4c7d4eb3c9bd62fd4b8786da90d418aa9ee3df76227315a34ad96e0e2

          • memory/944-54-0x0000000075B61000-0x0000000075B63000-memory.dmp

            Filesize

            8KB

          • memory/944-69-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/944-91-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/944-55-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB