Analysis

  • max time kernel
    153s
  • max time network
    169s
  • 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 10:27

General

  • Target

    4555a9a74b1804c9b928d2dcade35afd8a8ac255b1fc62f906d1b7eb109714f5.exe

  • Size

    601KB

  • MD5

    55a0f19076ffe4337b3e93359e54b94e

  • SHA1

    32f8c6e12ee731a54af88e4cd1bf50140fdb4f7f

  • SHA256

    4555a9a74b1804c9b928d2dcade35afd8a8ac255b1fc62f906d1b7eb109714f5

  • SHA512

    fdd29337e09cdc69b06eabc7d95cbb6bce41c8ddb1222443ad5e2620c580e442a7df0fb3c9d6b4fbcaedbae3d08c4d4eaa016c5845de6f522f53d9ebdad47881

  • SSDEEP

    12288:9Iny5DYTgC+gnhqMLSoeo3fKqXznxjFP/CiTns7kB02:pUTgroMMGof56iLU

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\4555a9a74b1804c9b928d2dcade35afd8a8ac255b1fc62f906d1b7eb109714f5.exe
    "C:\Users\Admin\AppData\Local\Temp\4555a9a74b1804c9b928d2dcade35afd8a8ac255b1fc62f906d1b7eb109714f5.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:1492
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4488
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3908
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1504
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2704
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:392
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4264
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3828
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3480
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2892
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4884
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1968
          • 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:4016
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:5072

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nslAFCF.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3648859bc1e3e53d1d6fb9fd2e05234e

            SHA1

            4b533876d4869aca781ea81cc75560202e25b76a

            SHA256

            914b0885a891884461f59c9f1e03873ba69b4e357ac3e4b62f2d6959d149a338

            SHA512

            4c4cd386ed84e88e1bba19fad8c926900db642f60121868edc3a36f80207aebe3c93a89f0af97a8488c06439146d19cdce487702e1777373dce0d30cc552da47

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3648859bc1e3e53d1d6fb9fd2e05234e

            SHA1

            4b533876d4869aca781ea81cc75560202e25b76a

            SHA256

            914b0885a891884461f59c9f1e03873ba69b4e357ac3e4b62f2d6959d149a338

            SHA512

            4c4cd386ed84e88e1bba19fad8c926900db642f60121868edc3a36f80207aebe3c93a89f0af97a8488c06439146d19cdce487702e1777373dce0d30cc552da47

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3648859bc1e3e53d1d6fb9fd2e05234e

            SHA1

            4b533876d4869aca781ea81cc75560202e25b76a

            SHA256

            914b0885a891884461f59c9f1e03873ba69b4e357ac3e4b62f2d6959d149a338

            SHA512

            4c4cd386ed84e88e1bba19fad8c926900db642f60121868edc3a36f80207aebe3c93a89f0af97a8488c06439146d19cdce487702e1777373dce0d30cc552da47

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3648859bc1e3e53d1d6fb9fd2e05234e

            SHA1

            4b533876d4869aca781ea81cc75560202e25b76a

            SHA256

            914b0885a891884461f59c9f1e03873ba69b4e357ac3e4b62f2d6959d149a338

            SHA512

            4c4cd386ed84e88e1bba19fad8c926900db642f60121868edc3a36f80207aebe3c93a89f0af97a8488c06439146d19cdce487702e1777373dce0d30cc552da47

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            abf6b563cacc2343d8df276f8486e782

            SHA1

            05cbd49ea53e5e0e4d7f57aefc6c24a3f8450eaa

            SHA256

            481fafa63b5f53cabc17867ab08683b18f13ad42a1fc537d470c11a4b71f68dc

            SHA512

            9cc9fd05e2a8b2bee5ad6ecc3a19faa92d18a60ac0e8932cdf670efce3ac5db7487a3081336992ce44123134133006d8a38531ef0c9f379b95e74a4736182093

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            abf6b563cacc2343d8df276f8486e782

            SHA1

            05cbd49ea53e5e0e4d7f57aefc6c24a3f8450eaa

            SHA256

            481fafa63b5f53cabc17867ab08683b18f13ad42a1fc537d470c11a4b71f68dc

            SHA512

            9cc9fd05e2a8b2bee5ad6ecc3a19faa92d18a60ac0e8932cdf670efce3ac5db7487a3081336992ce44123134133006d8a38531ef0c9f379b95e74a4736182093

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            abf6b563cacc2343d8df276f8486e782

            SHA1

            05cbd49ea53e5e0e4d7f57aefc6c24a3f8450eaa

            SHA256

            481fafa63b5f53cabc17867ab08683b18f13ad42a1fc537d470c11a4b71f68dc

            SHA512

            9cc9fd05e2a8b2bee5ad6ecc3a19faa92d18a60ac0e8932cdf670efce3ac5db7487a3081336992ce44123134133006d8a38531ef0c9f379b95e74a4736182093

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            911d0d9dded3ef4060ed665f52b7c5fd

            SHA1

            10872fafcbd97a32a7f2a625260a0a0eaa6767d2

            SHA256

            4dd54688cd4d4655b96d1d4dd15f434a2a688ee0a10165923bfde87004e787cc

            SHA512

            134bbddeaa29efae9298b9bd90c8d59d02f2ce34fd72c1596db41a3f398919e7a138c82fbe472be57e2f10ccf569442508bcf04a3cd7eb8d6bfb55200caeae70

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            911d0d9dded3ef4060ed665f52b7c5fd

            SHA1

            10872fafcbd97a32a7f2a625260a0a0eaa6767d2

            SHA256

            4dd54688cd4d4655b96d1d4dd15f434a2a688ee0a10165923bfde87004e787cc

            SHA512

            134bbddeaa29efae9298b9bd90c8d59d02f2ce34fd72c1596db41a3f398919e7a138c82fbe472be57e2f10ccf569442508bcf04a3cd7eb8d6bfb55200caeae70

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c670c8823562ee0114c3ae6943dfe371

            SHA1

            5b01bfb6dbbaaa0be67c17a4be933bcab94e0ce8

            SHA256

            d811687eb5e1979144c084328580ee9fc29fc0944228fdf39cdcec32f273e12e

            SHA512

            410740a3af32be95d053bff15617ee3046be94574c5e4c2ea24aa848102ab845d88a11e704339ef219ccf8ceaeb92ed315878bb2682b384216960ee12bcf1a7f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c670c8823562ee0114c3ae6943dfe371

            SHA1

            5b01bfb6dbbaaa0be67c17a4be933bcab94e0ce8

            SHA256

            d811687eb5e1979144c084328580ee9fc29fc0944228fdf39cdcec32f273e12e

            SHA512

            410740a3af32be95d053bff15617ee3046be94574c5e4c2ea24aa848102ab845d88a11e704339ef219ccf8ceaeb92ed315878bb2682b384216960ee12bcf1a7f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c670c8823562ee0114c3ae6943dfe371

            SHA1

            5b01bfb6dbbaaa0be67c17a4be933bcab94e0ce8

            SHA256

            d811687eb5e1979144c084328580ee9fc29fc0944228fdf39cdcec32f273e12e

            SHA512

            410740a3af32be95d053bff15617ee3046be94574c5e4c2ea24aa848102ab845d88a11e704339ef219ccf8ceaeb92ed315878bb2682b384216960ee12bcf1a7f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            07bfa762b087e5bbd0ef62698c18de8d

            SHA1

            f227cc648b978b8a0ca8d13110937a05551f969e

            SHA256

            358d04e4e445f90dcb3372073af01ce8fc5fa26f279bfa25dd4e620634753997

            SHA512

            65ad5e385c9d2a93ffc991047f4424144a8c06841dfeb59d66fd1f3f64d6d2b7e655e4451c2a7bf5380f37bcae2647e4abc010e676ff2c2e0322d98dd6c87ef1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            07bfa762b087e5bbd0ef62698c18de8d

            SHA1

            f227cc648b978b8a0ca8d13110937a05551f969e

            SHA256

            358d04e4e445f90dcb3372073af01ce8fc5fa26f279bfa25dd4e620634753997

            SHA512

            65ad5e385c9d2a93ffc991047f4424144a8c06841dfeb59d66fd1f3f64d6d2b7e655e4451c2a7bf5380f37bcae2647e4abc010e676ff2c2e0322d98dd6c87ef1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            07bfa762b087e5bbd0ef62698c18de8d

            SHA1

            f227cc648b978b8a0ca8d13110937a05551f969e

            SHA256

            358d04e4e445f90dcb3372073af01ce8fc5fa26f279bfa25dd4e620634753997

            SHA512

            65ad5e385c9d2a93ffc991047f4424144a8c06841dfeb59d66fd1f3f64d6d2b7e655e4451c2a7bf5380f37bcae2647e4abc010e676ff2c2e0322d98dd6c87ef1

          • memory/392-142-0x0000000000000000-mapping.dmp

          • memory/1492-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1492-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1504-140-0x0000000000000000-mapping.dmp

          • memory/1968-166-0x0000000000000000-mapping.dmp

          • memory/2704-141-0x0000000000000000-mapping.dmp

          • memory/2892-159-0x0000000000000000-mapping.dmp

          • memory/3480-158-0x0000000000000000-mapping.dmp

          • memory/3828-153-0x0000000000000000-mapping.dmp

          • memory/3908-136-0x0000000000000000-mapping.dmp

          • memory/4264-147-0x0000000000000000-mapping.dmp

          • memory/4488-135-0x0000000000000000-mapping.dmp

          • memory/4884-165-0x0000000000000000-mapping.dmp