Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:26

General

  • Target

    4ff5f377a8cf9657e02865bcbc6de68be65da18839973108806d55c8655d326d.exe

  • Size

    602KB

  • MD5

    9649e85af63dfd87036517131fff1eb3

  • SHA1

    7bc309946cf0ed1f19bd7d4137029304a05bd6db

  • SHA256

    4ff5f377a8cf9657e02865bcbc6de68be65da18839973108806d55c8655d326d

  • SHA512

    f999608a61cc87f5eef4f013ce6c85049480eac567ec3c7c8ebd4d0f7816f9aa1807317b4d5aa7de4f7cf6434c4d76bca569fdeda94ef393f0b0a29caa041c6c

  • SSDEEP

    12288:YIny5DYTKGi5YbacAf8+qGCBp6qa7Pk/xuKLMrv+4wc:2UTKQbJQ8+BPkQxv2c

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4ff5f377a8cf9657e02865bcbc6de68be65da18839973108806d55c8655d326d.exe
    "C:\Users\Admin\AppData\Local\Temp\4ff5f377a8cf9657e02865bcbc6de68be65da18839973108806d55c8655d326d.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:984
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3928
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:372
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4052
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:5064
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1792
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4912
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2076
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3680
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:112
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1964
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3172
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:320
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1876

          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:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsd9D31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            106KB

            MD5

            e4007ea905a889b67704b6b986e76143

            SHA1

            6a426b6f8736cb7f325a6f412ba854c0b89e0c54

            SHA256

            4696cea552230e427b3e1e6b29d2a4a7cf7e9fd0627481baf545f8242d4d4c6a

            SHA512

            ccd70826b4fff71574ef85194db8391a5ee9c3e2f82f59a7c079560b34071da0cab4441e4ea3c6a7ad011fc9febfdcabc18469cfa4900d66c9f88a5b407d8f00

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

            106KB

            MD5

            e4007ea905a889b67704b6b986e76143

            SHA1

            6a426b6f8736cb7f325a6f412ba854c0b89e0c54

            SHA256

            4696cea552230e427b3e1e6b29d2a4a7cf7e9fd0627481baf545f8242d4d4c6a

            SHA512

            ccd70826b4fff71574ef85194db8391a5ee9c3e2f82f59a7c079560b34071da0cab4441e4ea3c6a7ad011fc9febfdcabc18469cfa4900d66c9f88a5b407d8f00

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

            106KB

            MD5

            e4007ea905a889b67704b6b986e76143

            SHA1

            6a426b6f8736cb7f325a6f412ba854c0b89e0c54

            SHA256

            4696cea552230e427b3e1e6b29d2a4a7cf7e9fd0627481baf545f8242d4d4c6a

            SHA512

            ccd70826b4fff71574ef85194db8391a5ee9c3e2f82f59a7c079560b34071da0cab4441e4ea3c6a7ad011fc9febfdcabc18469cfa4900d66c9f88a5b407d8f00

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

            106KB

            MD5

            e4007ea905a889b67704b6b986e76143

            SHA1

            6a426b6f8736cb7f325a6f412ba854c0b89e0c54

            SHA256

            4696cea552230e427b3e1e6b29d2a4a7cf7e9fd0627481baf545f8242d4d4c6a

            SHA512

            ccd70826b4fff71574ef85194db8391a5ee9c3e2f82f59a7c079560b34071da0cab4441e4ea3c6a7ad011fc9febfdcabc18469cfa4900d66c9f88a5b407d8f00

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

            241KB

            MD5

            eb8076366cb7d24e6b3ff81c027310cc

            SHA1

            c2491637ca7f79a341fb35c756bfee19196cd22b

            SHA256

            760b9a6119001e6dbdb8ee473776b468f3f41d660eb93b4ee6eec83e85c1239d

            SHA512

            8f933cfeb7b99cdc3ba40580a12538a7b7eeec5995af1af85aa99c960423fd4d7b5b168af4ef855bb7e2a8cc507c38ec48399e8d42ab318d83889e94360556b2

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

            241KB

            MD5

            eb8076366cb7d24e6b3ff81c027310cc

            SHA1

            c2491637ca7f79a341fb35c756bfee19196cd22b

            SHA256

            760b9a6119001e6dbdb8ee473776b468f3f41d660eb93b4ee6eec83e85c1239d

            SHA512

            8f933cfeb7b99cdc3ba40580a12538a7b7eeec5995af1af85aa99c960423fd4d7b5b168af4ef855bb7e2a8cc507c38ec48399e8d42ab318d83889e94360556b2

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

            241KB

            MD5

            eb8076366cb7d24e6b3ff81c027310cc

            SHA1

            c2491637ca7f79a341fb35c756bfee19196cd22b

            SHA256

            760b9a6119001e6dbdb8ee473776b468f3f41d660eb93b4ee6eec83e85c1239d

            SHA512

            8f933cfeb7b99cdc3ba40580a12538a7b7eeec5995af1af85aa99c960423fd4d7b5b168af4ef855bb7e2a8cc507c38ec48399e8d42ab318d83889e94360556b2

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

            108KB

            MD5

            e710eae28a6f15a9aedd92f3e3cf48a7

            SHA1

            45adf4a4539aea0b0da563a2b244dc7eddf18995

            SHA256

            9bc847a5ca9babd2add9b23fdaf42682ecda70f27b6213a451b27e2c2acb5716

            SHA512

            7fb8054152febbbc5f6c1f225918befabd0720f3fbd481091267628f6fc86a02c8d5068423928f8886b62fde98e9efb7194e106458a2be8be6f723e54ca451f7

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

            108KB

            MD5

            e710eae28a6f15a9aedd92f3e3cf48a7

            SHA1

            45adf4a4539aea0b0da563a2b244dc7eddf18995

            SHA256

            9bc847a5ca9babd2add9b23fdaf42682ecda70f27b6213a451b27e2c2acb5716

            SHA512

            7fb8054152febbbc5f6c1f225918befabd0720f3fbd481091267628f6fc86a02c8d5068423928f8886b62fde98e9efb7194e106458a2be8be6f723e54ca451f7

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

            176KB

            MD5

            2d1521b74ec5237857c72b4319786972

            SHA1

            a07379c6f626cfd4270eeba4bcf8207adf30336f

            SHA256

            7ce4738612447916b81e543f281cb2cf5080880dcd00566389b51779a2feda33

            SHA512

            2d34ca0ecb079bbd5ef3dca74abcd5aec79bd95455c923a2b7db8e3ef12e08dc91e0c7bc884c5cc5dd2fb9022e754dfbdedd865cab790e0a2dbf10e95cfb5def

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

            176KB

            MD5

            2d1521b74ec5237857c72b4319786972

            SHA1

            a07379c6f626cfd4270eeba4bcf8207adf30336f

            SHA256

            7ce4738612447916b81e543f281cb2cf5080880dcd00566389b51779a2feda33

            SHA512

            2d34ca0ecb079bbd5ef3dca74abcd5aec79bd95455c923a2b7db8e3ef12e08dc91e0c7bc884c5cc5dd2fb9022e754dfbdedd865cab790e0a2dbf10e95cfb5def

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

            176KB

            MD5

            2d1521b74ec5237857c72b4319786972

            SHA1

            a07379c6f626cfd4270eeba4bcf8207adf30336f

            SHA256

            7ce4738612447916b81e543f281cb2cf5080880dcd00566389b51779a2feda33

            SHA512

            2d34ca0ecb079bbd5ef3dca74abcd5aec79bd95455c923a2b7db8e3ef12e08dc91e0c7bc884c5cc5dd2fb9022e754dfbdedd865cab790e0a2dbf10e95cfb5def

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

            158KB

            MD5

            082a63bf2245a0253a0ffc51acd0f30b

            SHA1

            e565b987ea44a5840d67b22e15215b9e76ac4b5b

            SHA256

            1664a6848e31f1b7307c29d2f3343ead3af68cd417dfc1e1d962e1b96bcc05d7

            SHA512

            df85e04d75302168447297b75c87b9cec41e7db4d10ebe567762c432b508badc00fba2bf00f6356b86188a6f4961f3b75360bab0c66748e92910584c5bfd00fe

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

            158KB

            MD5

            082a63bf2245a0253a0ffc51acd0f30b

            SHA1

            e565b987ea44a5840d67b22e15215b9e76ac4b5b

            SHA256

            1664a6848e31f1b7307c29d2f3343ead3af68cd417dfc1e1d962e1b96bcc05d7

            SHA512

            df85e04d75302168447297b75c87b9cec41e7db4d10ebe567762c432b508badc00fba2bf00f6356b86188a6f4961f3b75360bab0c66748e92910584c5bfd00fe

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

            158KB

            MD5

            082a63bf2245a0253a0ffc51acd0f30b

            SHA1

            e565b987ea44a5840d67b22e15215b9e76ac4b5b

            SHA256

            1664a6848e31f1b7307c29d2f3343ead3af68cd417dfc1e1d962e1b96bcc05d7

            SHA512

            df85e04d75302168447297b75c87b9cec41e7db4d10ebe567762c432b508badc00fba2bf00f6356b86188a6f4961f3b75360bab0c66748e92910584c5bfd00fe

          • memory/112-163-0x0000000000000000-mapping.dmp
          • memory/372-140-0x0000000000000000-mapping.dmp
          • memory/984-156-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/984-135-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/984-172-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1792-145-0x0000000000000000-mapping.dmp
          • memory/1964-169-0x0000000000000000-mapping.dmp
          • memory/2076-157-0x0000000000000000-mapping.dmp
          • memory/3172-170-0x0000000000000000-mapping.dmp
          • memory/3680-162-0x0000000000000000-mapping.dmp
          • memory/3928-139-0x0000000000000000-mapping.dmp
          • memory/4052-143-0x0000000000000000-mapping.dmp
          • memory/4912-150-0x0000000000000000-mapping.dmp
          • memory/5064-144-0x0000000000000000-mapping.dmp