Analysis

  • max time kernel
    117s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:56

General

  • Target

    556b3b9938a5b7ec50ad5b9868e42047d0f29a80a4f21f5d3b29de0429e5d487.exe

  • Size

    446KB

  • MD5

    46c1d9a34a5edc1263f36f0ab4095b9d

  • SHA1

    6115bf04bffe9017005241d71f5d58cad30ed51b

  • SHA256

    556b3b9938a5b7ec50ad5b9868e42047d0f29a80a4f21f5d3b29de0429e5d487

  • SHA512

    e8d57d938a1ff4008e8fb1a01dd94d7e2ff0d4b7059158dfea51190f0b60102c13d24138ad3f6acffa22306b0967594cf60daaa0dfcbdbad35dbb1a5bbad3e38

  • SSDEEP

    12288:5fKzW7QejZA6SSaxs1ZQV4PVYGCmBdOiEJrgB:5fKzmNSRxy0L6OfgB

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\556b3b9938a5b7ec50ad5b9868e42047d0f29a80a4f21f5d3b29de0429e5d487.exe
    "C:\Users\Admin\AppData\Local\Temp\556b3b9938a5b7ec50ad5b9868e42047d0f29a80a4f21f5d3b29de0429e5d487.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:692
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1000
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:668
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1188
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1416
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1488
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1604
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1452
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:796
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:876
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:632
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:860
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1916
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1356

          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

            4fe9e092e152682ab70061186988fcc2

            SHA1

            36f346866503b9aaf6a22f5074e19fcb7308c9c2

            SHA256

            0df8cfa3d00bb191a23b628bc057ad8914e365a903e64d83eadb74e3c934819c

            SHA512

            131678dad59e18614e50ffd56667d2414d6029112a31d33a8c7a55d5fb0d94f803d647db3236439321a0bcde662c0dec9302b010035eb5b0262beda16e6fddca

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

            241KB

            MD5

            c885bdbbd58972c476dce31883bf7e98

            SHA1

            6a7dd682cb8b046a6e383f5faf5102782d0a18fd

            SHA256

            171660730479df77a4c95634f46ef56185a9361b72dcb420ed1cbd3e8326004c

            SHA512

            9939299a42d960f4e3029b64146a09aca1d528c0f8503eae38a28e227ab652df849d48a853ca994ada4004d8d32c92bca4b6ab7d7d23d03b2ea718b0692b02b7

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

            108KB

            MD5

            2f4cee1c752459af1576ae10447eb025

            SHA1

            04e3bebe9f19da66014169fef8f28085b8c73ce3

            SHA256

            6c996f850ec23cf0b69b91c7031610ef5ee9583d215f1dfb2f8bc7f1e7be42a3

            SHA512

            7ce2cd22fc94604a34781e59b9d7a473379e37ea87962eb112015d65aea0579f9d137723a0d47c2bbb87c3c6e500c8b13baf377e1d6add2f65ad96406efd46a2

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

            176KB

            MD5

            2d87323f78999d61211298f96f61a569

            SHA1

            0edcc1a51ce77d1522dc2584c05e6dab6dc03e0a

            SHA256

            a38593bed8eb607cafe835cd34c7b29ec37ea6977cd2ba86852c7ce673166ff2

            SHA512

            7b8c3f979696567f5ed05562434a9c09d5ebfe69843067046ab5847a3a575ae3f29634b7a8bf7d848d947d2e5b2d295153fd18691b03940871d5576bbeaff094

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

            176KB

            MD5

            2d87323f78999d61211298f96f61a569

            SHA1

            0edcc1a51ce77d1522dc2584c05e6dab6dc03e0a

            SHA256

            a38593bed8eb607cafe835cd34c7b29ec37ea6977cd2ba86852c7ce673166ff2

            SHA512

            7b8c3f979696567f5ed05562434a9c09d5ebfe69843067046ab5847a3a575ae3f29634b7a8bf7d848d947d2e5b2d295153fd18691b03940871d5576bbeaff094

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

            158KB

            MD5

            bc70b7c7c9199ca3034ca06ab8ce6361

            SHA1

            d606946430b8757816a841cfc30977d442e72d23

            SHA256

            a044d3796f120492de2fc70e47d203c2f934e6a9959171ec938f3e2f5f7528ed

            SHA512

            d9d93dd899efa9eadbdaebbfc607b29407392f1e389e8be9a649933c1d1af44d394806236199ca306ee0e3b7a5bfcfc13efb2a79bfc8f04e294cebf9c19966b1

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

            158KB

            MD5

            bc70b7c7c9199ca3034ca06ab8ce6361

            SHA1

            d606946430b8757816a841cfc30977d442e72d23

            SHA256

            a044d3796f120492de2fc70e47d203c2f934e6a9959171ec938f3e2f5f7528ed

            SHA512

            d9d93dd899efa9eadbdaebbfc607b29407392f1e389e8be9a649933c1d1af44d394806236199ca306ee0e3b7a5bfcfc13efb2a79bfc8f04e294cebf9c19966b1

          • \Users\Admin\AppData\Local\Temp\nst4F3.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst4F3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4F3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4F3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst4F3.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            4fe9e092e152682ab70061186988fcc2

            SHA1

            36f346866503b9aaf6a22f5074e19fcb7308c9c2

            SHA256

            0df8cfa3d00bb191a23b628bc057ad8914e365a903e64d83eadb74e3c934819c

            SHA512

            131678dad59e18614e50ffd56667d2414d6029112a31d33a8c7a55d5fb0d94f803d647db3236439321a0bcde662c0dec9302b010035eb5b0262beda16e6fddca

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            4fe9e092e152682ab70061186988fcc2

            SHA1

            36f346866503b9aaf6a22f5074e19fcb7308c9c2

            SHA256

            0df8cfa3d00bb191a23b628bc057ad8914e365a903e64d83eadb74e3c934819c

            SHA512

            131678dad59e18614e50ffd56667d2414d6029112a31d33a8c7a55d5fb0d94f803d647db3236439321a0bcde662c0dec9302b010035eb5b0262beda16e6fddca

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            4fe9e092e152682ab70061186988fcc2

            SHA1

            36f346866503b9aaf6a22f5074e19fcb7308c9c2

            SHA256

            0df8cfa3d00bb191a23b628bc057ad8914e365a903e64d83eadb74e3c934819c

            SHA512

            131678dad59e18614e50ffd56667d2414d6029112a31d33a8c7a55d5fb0d94f803d647db3236439321a0bcde662c0dec9302b010035eb5b0262beda16e6fddca

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c885bdbbd58972c476dce31883bf7e98

            SHA1

            6a7dd682cb8b046a6e383f5faf5102782d0a18fd

            SHA256

            171660730479df77a4c95634f46ef56185a9361b72dcb420ed1cbd3e8326004c

            SHA512

            9939299a42d960f4e3029b64146a09aca1d528c0f8503eae38a28e227ab652df849d48a853ca994ada4004d8d32c92bca4b6ab7d7d23d03b2ea718b0692b02b7

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c885bdbbd58972c476dce31883bf7e98

            SHA1

            6a7dd682cb8b046a6e383f5faf5102782d0a18fd

            SHA256

            171660730479df77a4c95634f46ef56185a9361b72dcb420ed1cbd3e8326004c

            SHA512

            9939299a42d960f4e3029b64146a09aca1d528c0f8503eae38a28e227ab652df849d48a853ca994ada4004d8d32c92bca4b6ab7d7d23d03b2ea718b0692b02b7

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            2f4cee1c752459af1576ae10447eb025

            SHA1

            04e3bebe9f19da66014169fef8f28085b8c73ce3

            SHA256

            6c996f850ec23cf0b69b91c7031610ef5ee9583d215f1dfb2f8bc7f1e7be42a3

            SHA512

            7ce2cd22fc94604a34781e59b9d7a473379e37ea87962eb112015d65aea0579f9d137723a0d47c2bbb87c3c6e500c8b13baf377e1d6add2f65ad96406efd46a2

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            2d87323f78999d61211298f96f61a569

            SHA1

            0edcc1a51ce77d1522dc2584c05e6dab6dc03e0a

            SHA256

            a38593bed8eb607cafe835cd34c7b29ec37ea6977cd2ba86852c7ce673166ff2

            SHA512

            7b8c3f979696567f5ed05562434a9c09d5ebfe69843067046ab5847a3a575ae3f29634b7a8bf7d848d947d2e5b2d295153fd18691b03940871d5576bbeaff094

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            bc70b7c7c9199ca3034ca06ab8ce6361

            SHA1

            d606946430b8757816a841cfc30977d442e72d23

            SHA256

            a044d3796f120492de2fc70e47d203c2f934e6a9959171ec938f3e2f5f7528ed

            SHA512

            d9d93dd899efa9eadbdaebbfc607b29407392f1e389e8be9a649933c1d1af44d394806236199ca306ee0e3b7a5bfcfc13efb2a79bfc8f04e294cebf9c19966b1

          • memory/632-85-0x0000000000000000-mapping.dmp
          • memory/668-58-0x0000000000000000-mapping.dmp
          • memory/692-54-0x0000000076691000-0x0000000076693000-memory.dmp
            Filesize

            8KB

          • memory/796-79-0x0000000000000000-mapping.dmp
          • memory/860-86-0x0000000000000000-mapping.dmp
          • memory/876-80-0x0000000000000000-mapping.dmp
          • memory/1000-57-0x0000000000000000-mapping.dmp
          • memory/1188-60-0x0000000000000000-mapping.dmp
          • memory/1416-61-0x0000000000000000-mapping.dmp
          • memory/1452-75-0x0000000000000000-mapping.dmp
          • memory/1488-63-0x0000000000000000-mapping.dmp
          • memory/1604-69-0x0000000000000000-mapping.dmp