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Analysis

  • max time kernel
    30s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    22/11/2022, 00:10

General

  • Target

    d8521fd8cb6907d7901bad1675542969e11d3f637a335134970ae74e9fb682b2.exe

  • Size

    557KB

  • MD5

    0c591c92332b4030957823e02f79b06e

  • SHA1

    fe96c2b9767e64ff337774ae907412df060d442c

  • SHA256

    d8521fd8cb6907d7901bad1675542969e11d3f637a335134970ae74e9fb682b2

  • SHA512

    f20c57b038732e649f858470bbe05e3cd1e6bcd985165b45c6f17a7a84aa28beb3cb067f3220bff8f35ce11ccca423c6080e12f138b90729900a7e35a218434a

  • SSDEEP

    12288:a2hB6D/bfzx8EM0ESWA1pXAaBKyu/olWp7qfdxG1VEjM4LV1UZxfGhUlh:mDjf2EMk1/BhuwlW1qlg1VEjhqYqH

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\d8521fd8cb6907d7901bad1675542969e11d3f637a335134970ae74e9fb682b2.exe
    "C:\Users\Admin\AppData\Local\Temp\d8521fd8cb6907d7901bad1675542969e11d3f637a335134970ae74e9fb682b2.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:1728
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1348
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1052
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:564
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1480
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1344
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1648
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:824
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1828
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1684
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1564
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:828
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:280

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b8abb570ab9c7361b1b50d2f683b340b

            SHA1

            f5dd4d76dbc78a36f0d3c8ee518fc86bc600bcf8

            SHA256

            9dd8510df153911611e5bbd80c3d717bea94cfaa35819d729889ff56c9202628

            SHA512

            350b601b08b62ec24f1df4810c660ca845a6168079f419ed0a7ed06e27dad9c8a3b8aa9c30b99a31e960349cf2e88c8c60325418d8b3a8070bf559aad7310f55

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            66858d33ceb7eba6730a9440a4847c58

            SHA1

            a3d999fd84189956716c964d05b8ec6e4fbe1e67

            SHA256

            5d604ec8d4f142010a13adca3d8b7c1bcd0c0c07a8377b8a084bf3a56c9da70e

            SHA512

            f8468da72f13fb96b6f34eb4be2e690e75d4aeb0347e514a8f49a9e1d6599cab8ef6e1fa4510d036839edc6b0f884710343424f298ff9d0e58215b9ca9f47afe

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            48b3345e54c82d51fd8a256487d80518

            SHA1

            2d8c5caf4b9666a1f25d2a9d72ed3ed402fa05ff

            SHA256

            df6d891eea24f8c0349530d891a94d0efd5273f5afb5974ee343dd6352f3f7ab

            SHA512

            296b6343574846d2bd4602968e181aec968c9ba1e99e6356744521a8167a3ea0a658be6bcd478834779569b279067299a6bb325087bc46b9f61c98b3673c02b0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            15994de0e50b71d80ce3541839dedb95

            SHA1

            aea4d207183c4a7430c1ac103159021087e5e50b

            SHA256

            5537642f1b5aeaa8b49aa93e61e7d74a09305e93a9758670ff4ffea55a862769

            SHA512

            a966d150c4bfac30f61768b5a342b24e49ad8b45687ca423cb222c54ab101ce08dc638afaf909a20328eab4dd5a450625c411a3fd36c550cff0569589f3bad8b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            15994de0e50b71d80ce3541839dedb95

            SHA1

            aea4d207183c4a7430c1ac103159021087e5e50b

            SHA256

            5537642f1b5aeaa8b49aa93e61e7d74a09305e93a9758670ff4ffea55a862769

            SHA512

            a966d150c4bfac30f61768b5a342b24e49ad8b45687ca423cb222c54ab101ce08dc638afaf909a20328eab4dd5a450625c411a3fd36c550cff0569589f3bad8b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3172d3979ee011ca5c0c9266b449a2d1

            SHA1

            fcc72d815a9476fe0f623857aa6e1f9614be915f

            SHA256

            8a900319c8ad64c7c3f391e97f001984c7b819b562e3ea81a4b1715ef17681c0

            SHA512

            63be0c09e0b76a44c799e266c89e0eef92e65350b5dff9e973b6e47660ff8488ee95dc2f512ec7753194ce60b4355a6f35879818a0ad0284ee874b4030352951

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3172d3979ee011ca5c0c9266b449a2d1

            SHA1

            fcc72d815a9476fe0f623857aa6e1f9614be915f

            SHA256

            8a900319c8ad64c7c3f391e97f001984c7b819b562e3ea81a4b1715ef17681c0

            SHA512

            63be0c09e0b76a44c799e266c89e0eef92e65350b5dff9e973b6e47660ff8488ee95dc2f512ec7753194ce60b4355a6f35879818a0ad0284ee874b4030352951

          • \Users\Admin\AppData\Local\Temp\nsi254.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsi254.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi254.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi254.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsi254.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b8abb570ab9c7361b1b50d2f683b340b

            SHA1

            f5dd4d76dbc78a36f0d3c8ee518fc86bc600bcf8

            SHA256

            9dd8510df153911611e5bbd80c3d717bea94cfaa35819d729889ff56c9202628

            SHA512

            350b601b08b62ec24f1df4810c660ca845a6168079f419ed0a7ed06e27dad9c8a3b8aa9c30b99a31e960349cf2e88c8c60325418d8b3a8070bf559aad7310f55

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b8abb570ab9c7361b1b50d2f683b340b

            SHA1

            f5dd4d76dbc78a36f0d3c8ee518fc86bc600bcf8

            SHA256

            9dd8510df153911611e5bbd80c3d717bea94cfaa35819d729889ff56c9202628

            SHA512

            350b601b08b62ec24f1df4810c660ca845a6168079f419ed0a7ed06e27dad9c8a3b8aa9c30b99a31e960349cf2e88c8c60325418d8b3a8070bf559aad7310f55

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b8abb570ab9c7361b1b50d2f683b340b

            SHA1

            f5dd4d76dbc78a36f0d3c8ee518fc86bc600bcf8

            SHA256

            9dd8510df153911611e5bbd80c3d717bea94cfaa35819d729889ff56c9202628

            SHA512

            350b601b08b62ec24f1df4810c660ca845a6168079f419ed0a7ed06e27dad9c8a3b8aa9c30b99a31e960349cf2e88c8c60325418d8b3a8070bf559aad7310f55

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            66858d33ceb7eba6730a9440a4847c58

            SHA1

            a3d999fd84189956716c964d05b8ec6e4fbe1e67

            SHA256

            5d604ec8d4f142010a13adca3d8b7c1bcd0c0c07a8377b8a084bf3a56c9da70e

            SHA512

            f8468da72f13fb96b6f34eb4be2e690e75d4aeb0347e514a8f49a9e1d6599cab8ef6e1fa4510d036839edc6b0f884710343424f298ff9d0e58215b9ca9f47afe

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            66858d33ceb7eba6730a9440a4847c58

            SHA1

            a3d999fd84189956716c964d05b8ec6e4fbe1e67

            SHA256

            5d604ec8d4f142010a13adca3d8b7c1bcd0c0c07a8377b8a084bf3a56c9da70e

            SHA512

            f8468da72f13fb96b6f34eb4be2e690e75d4aeb0347e514a8f49a9e1d6599cab8ef6e1fa4510d036839edc6b0f884710343424f298ff9d0e58215b9ca9f47afe

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            48b3345e54c82d51fd8a256487d80518

            SHA1

            2d8c5caf4b9666a1f25d2a9d72ed3ed402fa05ff

            SHA256

            df6d891eea24f8c0349530d891a94d0efd5273f5afb5974ee343dd6352f3f7ab

            SHA512

            296b6343574846d2bd4602968e181aec968c9ba1e99e6356744521a8167a3ea0a658be6bcd478834779569b279067299a6bb325087bc46b9f61c98b3673c02b0

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            15994de0e50b71d80ce3541839dedb95

            SHA1

            aea4d207183c4a7430c1ac103159021087e5e50b

            SHA256

            5537642f1b5aeaa8b49aa93e61e7d74a09305e93a9758670ff4ffea55a862769

            SHA512

            a966d150c4bfac30f61768b5a342b24e49ad8b45687ca423cb222c54ab101ce08dc638afaf909a20328eab4dd5a450625c411a3fd36c550cff0569589f3bad8b

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3172d3979ee011ca5c0c9266b449a2d1

            SHA1

            fcc72d815a9476fe0f623857aa6e1f9614be915f

            SHA256

            8a900319c8ad64c7c3f391e97f001984c7b819b562e3ea81a4b1715ef17681c0

            SHA512

            63be0c09e0b76a44c799e266c89e0eef92e65350b5dff9e973b6e47660ff8488ee95dc2f512ec7753194ce60b4355a6f35879818a0ad0284ee874b4030352951

          • memory/1728-54-0x0000000076221000-0x0000000076223000-memory.dmp

            Filesize

            8KB

          • memory/1728-59-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB

          • memory/1728-90-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB