Analysis

  • max time kernel
    45s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 23:50

General

  • Target

    f96d86842f6fe5f6a526b0c5df59bbb8cd10918905d8e585a2262afeea00231e.exe

  • Size

    602KB

  • MD5

    b26b1572a0c71bc7e07526321ab9c2f0

  • SHA1

    6b06a12bcdaad62ab56d823c6fc9685fe108d4e0

  • SHA256

    f96d86842f6fe5f6a526b0c5df59bbb8cd10918905d8e585a2262afeea00231e

  • SHA512

    3dba02f935cad546108b1f64de374db7cb6e63e4b439ff9783cd26b8afdb7790fdf4364ea65639fcf002981d595ded69574318a9b2a2fa14fa246b10cc012c03

  • SSDEEP

    12288:8Iny5DYTSIgh+AsOXY3ZvhFHt0nkyPunr/tKeopgBVY:aUTSXh+ao3ZvhhmnVmr1KfpgBy

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\f96d86842f6fe5f6a526b0c5df59bbb8cd10918905d8e585a2262afeea00231e.exe
    "C:\Users\Admin\AppData\Local\Temp\f96d86842f6fe5f6a526b0c5df59bbb8cd10918905d8e585a2262afeea00231e.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:1456
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1472
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:824
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:916
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1372
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:580
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1664
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1840
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:756
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1888
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:700
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1672
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1720
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:276

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b651b1fa1f00d0dbf3a22c04f90432c

            SHA1

            6d8300850706244c7593369e972128dc2f2af5a7

            SHA256

            24e2be1f5c77c4c48aed1a29fba75b662bace63433222f01a33d574830be2079

            SHA512

            146b4c80f9b56c06bd3b7fff945697ead78d71152a5180ba059fd7308ddb95a3cc8686c6a1bca4550a392f77b07432a1f229a07fc319b1f17fa161d800b8327e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            24143b5f144b07ded9327045aeb9857a

            SHA1

            7f93c2d6ab1727dba66ac6b0713b89b75f4a504e

            SHA256

            13b4d673f72cba8cc7391ee6758fb0595f51bd128f4f08c238a5ddf4aeb4004e

            SHA512

            3cd9a746ba34afedfd3c8a030755c149e1bb8d6b3049a0a8962ec0f160755fdc2d60e7fd33ea861f3793207aa4050856cc90b15fe61ec369cca185b518a60947

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f85f7392d13ceb25352285d51e03adaa

            SHA1

            ec0ff779ace24b7bae9e351ec7b89e22f8b11fc7

            SHA256

            17ccb9b4ec47639138fafdeadc09221fe092372129034d27e4ed3f118eefad9a

            SHA512

            34d9202edb645295f3fe69f72db8414d8f3caebffbf5ce210d2411b4248efef7c32cb82146d01cac5d8a70a6fe0614ca45d5f8c3e7016ed1a72776941bab3591

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2b236045ea7643b705ded661a4e79ce4

            SHA1

            208c1025b7d476e615a04ab0ef17a67fb2f7ee6a

            SHA256

            43578aea0b6e1dd3d2b4a1af469fadb02cd515c19d227f1335fae3114fb57068

            SHA512

            8b7a8e68ee9329b485d8ef65425bd49aa4fa6a2990482d806bcbdba9c01f8ba315e5142e7d3902a323a68932497dc0f210cbd33a97350115b7120f1f53fa07e9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2b236045ea7643b705ded661a4e79ce4

            SHA1

            208c1025b7d476e615a04ab0ef17a67fb2f7ee6a

            SHA256

            43578aea0b6e1dd3d2b4a1af469fadb02cd515c19d227f1335fae3114fb57068

            SHA512

            8b7a8e68ee9329b485d8ef65425bd49aa4fa6a2990482d806bcbdba9c01f8ba315e5142e7d3902a323a68932497dc0f210cbd33a97350115b7120f1f53fa07e9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0b5d46ec0a2a8e2b74cf7dcbae2f8fe9

            SHA1

            10c8b19e295792b988a47520b5244ff75e624f7a

            SHA256

            6d4658b164be81346f0f20df8fb39aa4400751f1f34780ef7e46be362a7ea9cc

            SHA512

            47895ad53e9a63172960e574a2cc077fc299255e32601125ab69aad51e66bb4fd9354e132a43e680014c2128c44baa0fd6282c098988ae74761d6bfb92191bb9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0b5d46ec0a2a8e2b74cf7dcbae2f8fe9

            SHA1

            10c8b19e295792b988a47520b5244ff75e624f7a

            SHA256

            6d4658b164be81346f0f20df8fb39aa4400751f1f34780ef7e46be362a7ea9cc

            SHA512

            47895ad53e9a63172960e574a2cc077fc299255e32601125ab69aad51e66bb4fd9354e132a43e680014c2128c44baa0fd6282c098988ae74761d6bfb92191bb9

          • \Users\Admin\AppData\Local\Temp\nst3749.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst3749.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3749.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3749.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3749.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b651b1fa1f00d0dbf3a22c04f90432c

            SHA1

            6d8300850706244c7593369e972128dc2f2af5a7

            SHA256

            24e2be1f5c77c4c48aed1a29fba75b662bace63433222f01a33d574830be2079

            SHA512

            146b4c80f9b56c06bd3b7fff945697ead78d71152a5180ba059fd7308ddb95a3cc8686c6a1bca4550a392f77b07432a1f229a07fc319b1f17fa161d800b8327e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b651b1fa1f00d0dbf3a22c04f90432c

            SHA1

            6d8300850706244c7593369e972128dc2f2af5a7

            SHA256

            24e2be1f5c77c4c48aed1a29fba75b662bace63433222f01a33d574830be2079

            SHA512

            146b4c80f9b56c06bd3b7fff945697ead78d71152a5180ba059fd7308ddb95a3cc8686c6a1bca4550a392f77b07432a1f229a07fc319b1f17fa161d800b8327e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b651b1fa1f00d0dbf3a22c04f90432c

            SHA1

            6d8300850706244c7593369e972128dc2f2af5a7

            SHA256

            24e2be1f5c77c4c48aed1a29fba75b662bace63433222f01a33d574830be2079

            SHA512

            146b4c80f9b56c06bd3b7fff945697ead78d71152a5180ba059fd7308ddb95a3cc8686c6a1bca4550a392f77b07432a1f229a07fc319b1f17fa161d800b8327e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            24143b5f144b07ded9327045aeb9857a

            SHA1

            7f93c2d6ab1727dba66ac6b0713b89b75f4a504e

            SHA256

            13b4d673f72cba8cc7391ee6758fb0595f51bd128f4f08c238a5ddf4aeb4004e

            SHA512

            3cd9a746ba34afedfd3c8a030755c149e1bb8d6b3049a0a8962ec0f160755fdc2d60e7fd33ea861f3793207aa4050856cc90b15fe61ec369cca185b518a60947

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            24143b5f144b07ded9327045aeb9857a

            SHA1

            7f93c2d6ab1727dba66ac6b0713b89b75f4a504e

            SHA256

            13b4d673f72cba8cc7391ee6758fb0595f51bd128f4f08c238a5ddf4aeb4004e

            SHA512

            3cd9a746ba34afedfd3c8a030755c149e1bb8d6b3049a0a8962ec0f160755fdc2d60e7fd33ea861f3793207aa4050856cc90b15fe61ec369cca185b518a60947

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f85f7392d13ceb25352285d51e03adaa

            SHA1

            ec0ff779ace24b7bae9e351ec7b89e22f8b11fc7

            SHA256

            17ccb9b4ec47639138fafdeadc09221fe092372129034d27e4ed3f118eefad9a

            SHA512

            34d9202edb645295f3fe69f72db8414d8f3caebffbf5ce210d2411b4248efef7c32cb82146d01cac5d8a70a6fe0614ca45d5f8c3e7016ed1a72776941bab3591

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2b236045ea7643b705ded661a4e79ce4

            SHA1

            208c1025b7d476e615a04ab0ef17a67fb2f7ee6a

            SHA256

            43578aea0b6e1dd3d2b4a1af469fadb02cd515c19d227f1335fae3114fb57068

            SHA512

            8b7a8e68ee9329b485d8ef65425bd49aa4fa6a2990482d806bcbdba9c01f8ba315e5142e7d3902a323a68932497dc0f210cbd33a97350115b7120f1f53fa07e9

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0b5d46ec0a2a8e2b74cf7dcbae2f8fe9

            SHA1

            10c8b19e295792b988a47520b5244ff75e624f7a

            SHA256

            6d4658b164be81346f0f20df8fb39aa4400751f1f34780ef7e46be362a7ea9cc

            SHA512

            47895ad53e9a63172960e574a2cc077fc299255e32601125ab69aad51e66bb4fd9354e132a43e680014c2128c44baa0fd6282c098988ae74761d6bfb92191bb9

          • memory/1456-54-0x0000000075B51000-0x0000000075B53000-memory.dmp

            Filesize

            8KB

          • memory/1456-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1456-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB