Analysis

  • max time kernel
    91s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:10

General

  • Target

    dc57b9873c074becb118790c88c8024a245c4f07b316f2bec160da7bc57d99c0.exe

  • Size

    602KB

  • MD5

    9fc1aaf1506621c9ba7a8a8bdc594334

  • SHA1

    1a286d2a1f7b8713bc3ae88d10ebf6a923eee083

  • SHA256

    dc57b9873c074becb118790c88c8024a245c4f07b316f2bec160da7bc57d99c0

  • SHA512

    c7afce2baab1bef57a16bc67af8cbf283e5d544a70d17973f4546fc0ea71b71a38c6ecfdb8b25ef5e2cf83a125ad1ba5d602eea4425b9444aa4f8ccfa38873da

  • SSDEEP

    12288:XIny5DYTcIlDHrLJcBxDwltcDfKQRISl3ZpJ+lrT:/UTcGDLLJ7cDffRIaZpJ+lr

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\dc57b9873c074becb118790c88c8024a245c4f07b316f2bec160da7bc57d99c0.exe
    "C:\Users\Admin\AppData\Local\Temp\dc57b9873c074becb118790c88c8024a245c4f07b316f2bec160da7bc57d99c0.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:2232
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4112
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3256
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2784
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:5108
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2824
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4988
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1200
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3872
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2440
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4620
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3460
          • 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:2244
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:5020

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5cba9499d886c8b1cd5a11ae76662304

            SHA1

            0c5061c76a3f6c3b8e672d2e26ecbbede22f21a0

            SHA256

            97bebf539f39016bd3bb4c0788091c1fa67862d9cb69322ce03c791f9a8f3037

            SHA512

            2c2dcf7e8a524ff7c1b88796f6d9d307c38cfca94bb6e7dbe6a1ec942e7d99665b405d77cb3095c7f1d644b8ce0828b8cea180eb828b2e575b0d9cf6b3878ccd

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5cba9499d886c8b1cd5a11ae76662304

            SHA1

            0c5061c76a3f6c3b8e672d2e26ecbbede22f21a0

            SHA256

            97bebf539f39016bd3bb4c0788091c1fa67862d9cb69322ce03c791f9a8f3037

            SHA512

            2c2dcf7e8a524ff7c1b88796f6d9d307c38cfca94bb6e7dbe6a1ec942e7d99665b405d77cb3095c7f1d644b8ce0828b8cea180eb828b2e575b0d9cf6b3878ccd

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5cba9499d886c8b1cd5a11ae76662304

            SHA1

            0c5061c76a3f6c3b8e672d2e26ecbbede22f21a0

            SHA256

            97bebf539f39016bd3bb4c0788091c1fa67862d9cb69322ce03c791f9a8f3037

            SHA512

            2c2dcf7e8a524ff7c1b88796f6d9d307c38cfca94bb6e7dbe6a1ec942e7d99665b405d77cb3095c7f1d644b8ce0828b8cea180eb828b2e575b0d9cf6b3878ccd

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            5cba9499d886c8b1cd5a11ae76662304

            SHA1

            0c5061c76a3f6c3b8e672d2e26ecbbede22f21a0

            SHA256

            97bebf539f39016bd3bb4c0788091c1fa67862d9cb69322ce03c791f9a8f3037

            SHA512

            2c2dcf7e8a524ff7c1b88796f6d9d307c38cfca94bb6e7dbe6a1ec942e7d99665b405d77cb3095c7f1d644b8ce0828b8cea180eb828b2e575b0d9cf6b3878ccd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            30b1856776749d5c5e92788412957c87

            SHA1

            7892b0196bb9a60958e90cec362b97843f5b5c04

            SHA256

            88df9fa64971a34814e0494732d7c844e08f07843b829112359fbb005626a947

            SHA512

            9804fb1f45614c4b4f770d9f4b153adbab8c1d56f54e018102236a8c84174f6f8c073ae4930457454808552a3cfceeccf6b2b52788ac73314d8fcced2391bdcd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            30b1856776749d5c5e92788412957c87

            SHA1

            7892b0196bb9a60958e90cec362b97843f5b5c04

            SHA256

            88df9fa64971a34814e0494732d7c844e08f07843b829112359fbb005626a947

            SHA512

            9804fb1f45614c4b4f770d9f4b153adbab8c1d56f54e018102236a8c84174f6f8c073ae4930457454808552a3cfceeccf6b2b52788ac73314d8fcced2391bdcd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            30b1856776749d5c5e92788412957c87

            SHA1

            7892b0196bb9a60958e90cec362b97843f5b5c04

            SHA256

            88df9fa64971a34814e0494732d7c844e08f07843b829112359fbb005626a947

            SHA512

            9804fb1f45614c4b4f770d9f4b153adbab8c1d56f54e018102236a8c84174f6f8c073ae4930457454808552a3cfceeccf6b2b52788ac73314d8fcced2391bdcd

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8643b944ec591112195a7a69c744ccf8

            SHA1

            145b3ac3ba89dca2f6d17751477bccabc14f1048

            SHA256

            0dce16b394346d0811fd3d3df49ca29bcdfe3f76575fb5f9c2c96fe3e677d713

            SHA512

            f79ea4616ace5a4b8652f1e5a4ae6a8200a19b23f6a109d5fc03d7b98b40207d23d396aa587c8e091522293eff7bc7b4640bf588d0ff8308d41751e7ed883ece

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8643b944ec591112195a7a69c744ccf8

            SHA1

            145b3ac3ba89dca2f6d17751477bccabc14f1048

            SHA256

            0dce16b394346d0811fd3d3df49ca29bcdfe3f76575fb5f9c2c96fe3e677d713

            SHA512

            f79ea4616ace5a4b8652f1e5a4ae6a8200a19b23f6a109d5fc03d7b98b40207d23d396aa587c8e091522293eff7bc7b4640bf588d0ff8308d41751e7ed883ece

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            28165d55db6a9eab0178e435c27bac3d

            SHA1

            351940f8eb2334c257fab65b1c8be8b2ad18c977

            SHA256

            1d0bafe1bf98ef7a837ccf0bc33e0db60f150fc35922fe4bf75a1a52f990be50

            SHA512

            fd8b934a7b7336cdce0fe9bc7e7d21ca48549ea8a0bed5e63306e7cd4d7f15346892e704218ba4b476193331de2e8c77326d4e9cdf61ebeb1e922c481b72b3e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            28165d55db6a9eab0178e435c27bac3d

            SHA1

            351940f8eb2334c257fab65b1c8be8b2ad18c977

            SHA256

            1d0bafe1bf98ef7a837ccf0bc33e0db60f150fc35922fe4bf75a1a52f990be50

            SHA512

            fd8b934a7b7336cdce0fe9bc7e7d21ca48549ea8a0bed5e63306e7cd4d7f15346892e704218ba4b476193331de2e8c77326d4e9cdf61ebeb1e922c481b72b3e2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            28165d55db6a9eab0178e435c27bac3d

            SHA1

            351940f8eb2334c257fab65b1c8be8b2ad18c977

            SHA256

            1d0bafe1bf98ef7a837ccf0bc33e0db60f150fc35922fe4bf75a1a52f990be50

            SHA512

            fd8b934a7b7336cdce0fe9bc7e7d21ca48549ea8a0bed5e63306e7cd4d7f15346892e704218ba4b476193331de2e8c77326d4e9cdf61ebeb1e922c481b72b3e2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4d259f2855d47090bf29bf44e24c1248

            SHA1

            20e23c084875dbc7ea0a03095266131be1e931ab

            SHA256

            1b39bbc27182015993ee127a232e5fe7c3d052cddd8292d47c77f328ece4fdf2

            SHA512

            4c681c8b1b90bf2f39a03c9977707c1740436bdfb5ea143bd3e8b3737b8fa3885909471e95e1583e0607269cb382b3a043b89f79b25965467ab855592a51a22d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4d259f2855d47090bf29bf44e24c1248

            SHA1

            20e23c084875dbc7ea0a03095266131be1e931ab

            SHA256

            1b39bbc27182015993ee127a232e5fe7c3d052cddd8292d47c77f328ece4fdf2

            SHA512

            4c681c8b1b90bf2f39a03c9977707c1740436bdfb5ea143bd3e8b3737b8fa3885909471e95e1583e0607269cb382b3a043b89f79b25965467ab855592a51a22d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            4d259f2855d47090bf29bf44e24c1248

            SHA1

            20e23c084875dbc7ea0a03095266131be1e931ab

            SHA256

            1b39bbc27182015993ee127a232e5fe7c3d052cddd8292d47c77f328ece4fdf2

            SHA512

            4c681c8b1b90bf2f39a03c9977707c1740436bdfb5ea143bd3e8b3737b8fa3885909471e95e1583e0607269cb382b3a043b89f79b25965467ab855592a51a22d

          • memory/1200-153-0x0000000000000000-mapping.dmp

          • memory/2232-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2232-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2440-159-0x0000000000000000-mapping.dmp

          • memory/2784-140-0x0000000000000000-mapping.dmp

          • memory/2824-142-0x0000000000000000-mapping.dmp

          • memory/3256-136-0x0000000000000000-mapping.dmp

          • memory/3460-166-0x0000000000000000-mapping.dmp

          • memory/3872-158-0x0000000000000000-mapping.dmp

          • memory/4112-135-0x0000000000000000-mapping.dmp

          • memory/4620-165-0x0000000000000000-mapping.dmp

          • memory/4988-147-0x0000000000000000-mapping.dmp

          • memory/5108-141-0x0000000000000000-mapping.dmp