Analysis

  • max time kernel
    42s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:24

General

  • Target

    67bb825361c9b4b089bae921dd8196feda2ca0a380eb1d2e53e9a5b01673e3d7.exe

  • Size

    601KB

  • MD5

    0238b861a1200b2e5ae4133be0428aaa

  • SHA1

    e631695c3539b6b5b4078c40d8e5dae72891ae9a

  • SHA256

    67bb825361c9b4b089bae921dd8196feda2ca0a380eb1d2e53e9a5b01673e3d7

  • SHA512

    c19648d2a837dae48d6cdfeecf4956661aa61615a65dd03ceeeda6e488c11971b4a43fc3907209d5a208bdc855fa1c2e1a0d3613dc09584aaf47a25d2c69c6d2

  • SSDEEP

    12288:FIny5DYTfZ9OAIDyQiCWKQuX5DsgLEAfHg0l5RDaGAmeqjx7zxq:xUTfrOAI9NW/WvEcHbzDaExB

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\67bb825361c9b4b089bae921dd8196feda2ca0a380eb1d2e53e9a5b01673e3d7.exe
    "C:\Users\Admin\AppData\Local\Temp\67bb825361c9b4b089bae921dd8196feda2ca0a380eb1d2e53e9a5b01673e3d7.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:900
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:884
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1032
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1216
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1876
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:800
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:896
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:820
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1636
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1472
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1800
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1580
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:528
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1492

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            398f40f92813996f4c86842e452b7df7

            SHA1

            cba1806faa63eba92d6c6d172a5e0f596b61d10d

            SHA256

            286b5cc69c6d3037bfd81650ba9bd571db3a04bc19e7df309c93f0b87f05a9f8

            SHA512

            af19efbdb1543c364244f6f83e3df0029f5d08931632a10a8e349198d9e9c9f2cd7de5a18adf668384b93dc3613eb6523d8cfa529c8a97bfbd53dab06bcc80c7

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b8d7a18caf60ecaa6689368bc99bd113

            SHA1

            32619fd7af42acde7f6af26f668c20db0ae70060

            SHA256

            25d7d4d388bff3e92c920bb868e9dd1bba69fe59d041060f6e8c21ce4f599f61

            SHA512

            0cbfcbf676203b123ca3d49d02cc9b151f05c3ac49123b2d12431f653d3e0d689a0e3e48f9264814540e15a7aac241b50466a9b9a69b0ec537d0dc1c71eb4a7c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            acdd3743ab1e426c2021a9caa4bbfeeb

            SHA1

            9e9a52080bcb4d531518ebd47094f8033788a028

            SHA256

            a6990b7c1572357ca8c88609ae9b4dcd592e4a9abd9ffb40960a4d2a0c277652

            SHA512

            711b1c0707aa9c0a96d3d10b98c59524031e66d350786802e6b480ea9d0cf3dfc009d1405ba27f1cc9fdaa2b552df9c73e044dc618bc10e09e4d17adb4cdb0ba

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ef9b70af2d828b10c3ae21d46b6f33ed

            SHA1

            8a807cdb688b97670211e0442fc77e2888c9212a

            SHA256

            65159839a66ae88b43301a7e1a3daeeab3d59149554928a710933962a4335d95

            SHA512

            b37b948c6938b5e270cdb7efea9c610d19aa8a5fd314e6792137b38b777b02ce6991b582985ca4bd9126bf9024bf5b538339a0e20eaf89762ba6f07baace62c5

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ef9b70af2d828b10c3ae21d46b6f33ed

            SHA1

            8a807cdb688b97670211e0442fc77e2888c9212a

            SHA256

            65159839a66ae88b43301a7e1a3daeeab3d59149554928a710933962a4335d95

            SHA512

            b37b948c6938b5e270cdb7efea9c610d19aa8a5fd314e6792137b38b777b02ce6991b582985ca4bd9126bf9024bf5b538339a0e20eaf89762ba6f07baace62c5

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9fad180b00f9216e662547332d25d1e9

            SHA1

            c80cade1a036df9ac844f8ade9b353a2465e51fa

            SHA256

            df0891f2b2e61d64c17bfdc986f87f3a7ee7280641a90fbb7e339be99668bcab

            SHA512

            85dd7989c0961fcca053d5f05da362da2cedfa3d363f43708381542792bb28cd736058b7ef2f29341acce21bcfcdf2f983589b6e72751878750501e52ba8c521

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9fad180b00f9216e662547332d25d1e9

            SHA1

            c80cade1a036df9ac844f8ade9b353a2465e51fa

            SHA256

            df0891f2b2e61d64c17bfdc986f87f3a7ee7280641a90fbb7e339be99668bcab

            SHA512

            85dd7989c0961fcca053d5f05da362da2cedfa3d363f43708381542792bb28cd736058b7ef2f29341acce21bcfcdf2f983589b6e72751878750501e52ba8c521

          • \Users\Admin\AppData\Local\Temp\nsd125B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd125B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd125B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd125B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd125B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            398f40f92813996f4c86842e452b7df7

            SHA1

            cba1806faa63eba92d6c6d172a5e0f596b61d10d

            SHA256

            286b5cc69c6d3037bfd81650ba9bd571db3a04bc19e7df309c93f0b87f05a9f8

            SHA512

            af19efbdb1543c364244f6f83e3df0029f5d08931632a10a8e349198d9e9c9f2cd7de5a18adf668384b93dc3613eb6523d8cfa529c8a97bfbd53dab06bcc80c7

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            398f40f92813996f4c86842e452b7df7

            SHA1

            cba1806faa63eba92d6c6d172a5e0f596b61d10d

            SHA256

            286b5cc69c6d3037bfd81650ba9bd571db3a04bc19e7df309c93f0b87f05a9f8

            SHA512

            af19efbdb1543c364244f6f83e3df0029f5d08931632a10a8e349198d9e9c9f2cd7de5a18adf668384b93dc3613eb6523d8cfa529c8a97bfbd53dab06bcc80c7

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            398f40f92813996f4c86842e452b7df7

            SHA1

            cba1806faa63eba92d6c6d172a5e0f596b61d10d

            SHA256

            286b5cc69c6d3037bfd81650ba9bd571db3a04bc19e7df309c93f0b87f05a9f8

            SHA512

            af19efbdb1543c364244f6f83e3df0029f5d08931632a10a8e349198d9e9c9f2cd7de5a18adf668384b93dc3613eb6523d8cfa529c8a97bfbd53dab06bcc80c7

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b8d7a18caf60ecaa6689368bc99bd113

            SHA1

            32619fd7af42acde7f6af26f668c20db0ae70060

            SHA256

            25d7d4d388bff3e92c920bb868e9dd1bba69fe59d041060f6e8c21ce4f599f61

            SHA512

            0cbfcbf676203b123ca3d49d02cc9b151f05c3ac49123b2d12431f653d3e0d689a0e3e48f9264814540e15a7aac241b50466a9b9a69b0ec537d0dc1c71eb4a7c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            b8d7a18caf60ecaa6689368bc99bd113

            SHA1

            32619fd7af42acde7f6af26f668c20db0ae70060

            SHA256

            25d7d4d388bff3e92c920bb868e9dd1bba69fe59d041060f6e8c21ce4f599f61

            SHA512

            0cbfcbf676203b123ca3d49d02cc9b151f05c3ac49123b2d12431f653d3e0d689a0e3e48f9264814540e15a7aac241b50466a9b9a69b0ec537d0dc1c71eb4a7c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            acdd3743ab1e426c2021a9caa4bbfeeb

            SHA1

            9e9a52080bcb4d531518ebd47094f8033788a028

            SHA256

            a6990b7c1572357ca8c88609ae9b4dcd592e4a9abd9ffb40960a4d2a0c277652

            SHA512

            711b1c0707aa9c0a96d3d10b98c59524031e66d350786802e6b480ea9d0cf3dfc009d1405ba27f1cc9fdaa2b552df9c73e044dc618bc10e09e4d17adb4cdb0ba

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ef9b70af2d828b10c3ae21d46b6f33ed

            SHA1

            8a807cdb688b97670211e0442fc77e2888c9212a

            SHA256

            65159839a66ae88b43301a7e1a3daeeab3d59149554928a710933962a4335d95

            SHA512

            b37b948c6938b5e270cdb7efea9c610d19aa8a5fd314e6792137b38b777b02ce6991b582985ca4bd9126bf9024bf5b538339a0e20eaf89762ba6f07baace62c5

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9fad180b00f9216e662547332d25d1e9

            SHA1

            c80cade1a036df9ac844f8ade9b353a2465e51fa

            SHA256

            df0891f2b2e61d64c17bfdc986f87f3a7ee7280641a90fbb7e339be99668bcab

            SHA512

            85dd7989c0961fcca053d5f05da362da2cedfa3d363f43708381542792bb28cd736058b7ef2f29341acce21bcfcdf2f983589b6e72751878750501e52ba8c521

          • memory/800-64-0x0000000000000000-mapping.dmp

          • memory/820-76-0x0000000000000000-mapping.dmp

          • memory/884-57-0x0000000000000000-mapping.dmp

          • memory/896-70-0x0000000000000000-mapping.dmp

          • memory/900-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/900-54-0x00000000762D1000-0x00000000762D3000-memory.dmp

            Filesize

            8KB

          • memory/900-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1032-58-0x0000000000000000-mapping.dmp

          • memory/1216-61-0x0000000000000000-mapping.dmp

          • memory/1472-81-0x0000000000000000-mapping.dmp

          • memory/1580-87-0x0000000000000000-mapping.dmp

          • memory/1636-80-0x0000000000000000-mapping.dmp

          • memory/1800-86-0x0000000000000000-mapping.dmp

          • memory/1876-62-0x0000000000000000-mapping.dmp