Analysis

  • max time kernel
    150s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 06:01

General

  • Target

    b3176b58c3103c0cf53857e94945f74bfc4e988dfa7770837c2beb276be8a344.exe

  • Size

    694KB

  • MD5

    e3412e8b231384002f79953e87fcc7d6

  • SHA1

    bfd490952c36222d027971ef8f1d5c0f7cb5cb60

  • SHA256

    b3176b58c3103c0cf53857e94945f74bfc4e988dfa7770837c2beb276be8a344

  • SHA512

    5d066537c5ccf249b327beb76bdf8f841e5ec2fd49d6b2d5451b7d2df8e0c4ea2f7c4f015f6760efd2f0236de6ebb89672d830dacc5f99839549e0b49068d54f

  • SSDEEP

    12288:0Abu3fQ+thk6Ez4bfFOOqAphWKCxFN/plQmHPPGZ2BWx3upMZdLOTgsy:0AbuPPEzMfwXpKCV/p6Zv3upMZdCgp

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\b3176b58c3103c0cf53857e94945f74bfc4e988dfa7770837c2beb276be8a344.exe
    "C:\Users\Admin\AppData\Local\Temp\b3176b58c3103c0cf53857e94945f74bfc4e988dfa7770837c2beb276be8a344.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:5096
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3236
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2000
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4120
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4920
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4844
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4596
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3384
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2500
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4732
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2360
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2148
          • 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:3076
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2932

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsfA2FD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            82e1b1a47d3c55325c61b83c87a5fd94

            SHA1

            60d0422fdbaf39c314174143e8fc0d358f03d030

            SHA256

            37f5555363ee918ffd00c9f14ee50e1c46c82a532b9c23ba3bfb995040e1a8a2

            SHA512

            2b365623603ab35e17314b55d80296626b10b07b39d019e66b05a530b69031d750300e94c9b88e61e20fd395d93c19a0bc1be0000b40d446d890bdeb91898a7d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            82e1b1a47d3c55325c61b83c87a5fd94

            SHA1

            60d0422fdbaf39c314174143e8fc0d358f03d030

            SHA256

            37f5555363ee918ffd00c9f14ee50e1c46c82a532b9c23ba3bfb995040e1a8a2

            SHA512

            2b365623603ab35e17314b55d80296626b10b07b39d019e66b05a530b69031d750300e94c9b88e61e20fd395d93c19a0bc1be0000b40d446d890bdeb91898a7d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            82e1b1a47d3c55325c61b83c87a5fd94

            SHA1

            60d0422fdbaf39c314174143e8fc0d358f03d030

            SHA256

            37f5555363ee918ffd00c9f14ee50e1c46c82a532b9c23ba3bfb995040e1a8a2

            SHA512

            2b365623603ab35e17314b55d80296626b10b07b39d019e66b05a530b69031d750300e94c9b88e61e20fd395d93c19a0bc1be0000b40d446d890bdeb91898a7d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            82e1b1a47d3c55325c61b83c87a5fd94

            SHA1

            60d0422fdbaf39c314174143e8fc0d358f03d030

            SHA256

            37f5555363ee918ffd00c9f14ee50e1c46c82a532b9c23ba3bfb995040e1a8a2

            SHA512

            2b365623603ab35e17314b55d80296626b10b07b39d019e66b05a530b69031d750300e94c9b88e61e20fd395d93c19a0bc1be0000b40d446d890bdeb91898a7d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5a7776f26bd73df188d747933746c2ee

            SHA1

            91325bfcc5a6ba2124cd55e6e1ef063de08eac2d

            SHA256

            8ca847f13b9fbcc279f465f7437928c923e51ec2b394eb70d7a4d1c8d029b235

            SHA512

            7e9ca95ec10d3c0a054f5bde1969f595d1a484fbf3c05ae9a395b273bd5f0de24faebe244f8c53c556cd657f4a928e06ba309ec83c0f0eebe3fa8458cf036778

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5a7776f26bd73df188d747933746c2ee

            SHA1

            91325bfcc5a6ba2124cd55e6e1ef063de08eac2d

            SHA256

            8ca847f13b9fbcc279f465f7437928c923e51ec2b394eb70d7a4d1c8d029b235

            SHA512

            7e9ca95ec10d3c0a054f5bde1969f595d1a484fbf3c05ae9a395b273bd5f0de24faebe244f8c53c556cd657f4a928e06ba309ec83c0f0eebe3fa8458cf036778

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5a7776f26bd73df188d747933746c2ee

            SHA1

            91325bfcc5a6ba2124cd55e6e1ef063de08eac2d

            SHA256

            8ca847f13b9fbcc279f465f7437928c923e51ec2b394eb70d7a4d1c8d029b235

            SHA512

            7e9ca95ec10d3c0a054f5bde1969f595d1a484fbf3c05ae9a395b273bd5f0de24faebe244f8c53c556cd657f4a928e06ba309ec83c0f0eebe3fa8458cf036778

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4d74a82bab553ded8d8962578749ed9f

            SHA1

            58cdf387ff920d5ab007312b3bcd0d67c88eff48

            SHA256

            b50505b38b1c7b52e2e4fc54cb6d57fa054a1dfe7311635b5163ecfa3a2b1ad6

            SHA512

            6e518e1e88024c94ea9461dcf68be749cf10d89adf72b84f9857e17a15cffe159cdda1fbf057f775a4efa19473123d7b08a1086957f15c2e6d0d3fbb030fe605

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4d74a82bab553ded8d8962578749ed9f

            SHA1

            58cdf387ff920d5ab007312b3bcd0d67c88eff48

            SHA256

            b50505b38b1c7b52e2e4fc54cb6d57fa054a1dfe7311635b5163ecfa3a2b1ad6

            SHA512

            6e518e1e88024c94ea9461dcf68be749cf10d89adf72b84f9857e17a15cffe159cdda1fbf057f775a4efa19473123d7b08a1086957f15c2e6d0d3fbb030fe605

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7214cd6830b8a2adf7b67f6323fe57de

            SHA1

            cb2763f384858d47dc84ab9950f742d7067a0c1e

            SHA256

            702301a92dfbd78d8af66d4ed00bafbf0afcc547b259e9e5de5fbc4e9c01d738

            SHA512

            a57076b79ef78676f4566e4a0bad91f90495b35a151cdff74c31aed37df4cfcb9e9662b6d7ffcdc5cca8c22b4304d7e943780d0fbe46e2a845f608599b715d25

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7214cd6830b8a2adf7b67f6323fe57de

            SHA1

            cb2763f384858d47dc84ab9950f742d7067a0c1e

            SHA256

            702301a92dfbd78d8af66d4ed00bafbf0afcc547b259e9e5de5fbc4e9c01d738

            SHA512

            a57076b79ef78676f4566e4a0bad91f90495b35a151cdff74c31aed37df4cfcb9e9662b6d7ffcdc5cca8c22b4304d7e943780d0fbe46e2a845f608599b715d25

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7214cd6830b8a2adf7b67f6323fe57de

            SHA1

            cb2763f384858d47dc84ab9950f742d7067a0c1e

            SHA256

            702301a92dfbd78d8af66d4ed00bafbf0afcc547b259e9e5de5fbc4e9c01d738

            SHA512

            a57076b79ef78676f4566e4a0bad91f90495b35a151cdff74c31aed37df4cfcb9e9662b6d7ffcdc5cca8c22b4304d7e943780d0fbe46e2a845f608599b715d25

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e9dd8cd43f17cc2e2863498a7083bfb3

            SHA1

            bec69dab0f6c54e1d2af6e65e770e6d3c62887e3

            SHA256

            ef9bef64da6c7943b5056dfcf6f93bbfa1cdac8443e1b0529009fbb4e7a74d48

            SHA512

            9db432fed79a2caaf534bb5108a4db9a827be2885b5a90452a06632bbeff44bf275e57db10c8f98212f1872d345c7c345ea3d9017644bb44a7118af308646803

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e9dd8cd43f17cc2e2863498a7083bfb3

            SHA1

            bec69dab0f6c54e1d2af6e65e770e6d3c62887e3

            SHA256

            ef9bef64da6c7943b5056dfcf6f93bbfa1cdac8443e1b0529009fbb4e7a74d48

            SHA512

            9db432fed79a2caaf534bb5108a4db9a827be2885b5a90452a06632bbeff44bf275e57db10c8f98212f1872d345c7c345ea3d9017644bb44a7118af308646803

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e9dd8cd43f17cc2e2863498a7083bfb3

            SHA1

            bec69dab0f6c54e1d2af6e65e770e6d3c62887e3

            SHA256

            ef9bef64da6c7943b5056dfcf6f93bbfa1cdac8443e1b0529009fbb4e7a74d48

            SHA512

            9db432fed79a2caaf534bb5108a4db9a827be2885b5a90452a06632bbeff44bf275e57db10c8f98212f1872d345c7c345ea3d9017644bb44a7118af308646803

          • memory/2000-136-0x0000000000000000-mapping.dmp

          • memory/2148-167-0x0000000000000000-mapping.dmp

          • memory/2360-166-0x0000000000000000-mapping.dmp

          • memory/2500-159-0x0000000000000000-mapping.dmp

          • memory/3236-135-0x0000000000000000-mapping.dmp

          • memory/3384-153-0x0000000000000000-mapping.dmp

          • memory/4120-139-0x0000000000000000-mapping.dmp

          • memory/4596-147-0x0000000000000000-mapping.dmp

          • memory/4732-160-0x0000000000000000-mapping.dmp

          • memory/4844-142-0x0000000000000000-mapping.dmp

          • memory/4920-140-0x0000000000000000-mapping.dmp

          • memory/5096-158-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/5096-141-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/5096-169-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB