Analysis

  • max time kernel
    172s
  • max time network
    186s
  • 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 10:12

General

  • Target

    c9fc9bb0e45891df41ab686499995540c638ef114fb85647847c193629aec6c0.exe

  • Size

    601KB

  • MD5

    cc4f0798367dccf42c90961c74f682bc

  • SHA1

    c7470c888b0379c35f8ed21acf83c10ce35a4cf0

  • SHA256

    c9fc9bb0e45891df41ab686499995540c638ef114fb85647847c193629aec6c0

  • SHA512

    4b3aa3813c1c4f13c255b749f7476c0b9db6d97529d40a1c63a1567f3fe2dcf004e940ae3b148f87209b56cec1357468ad4124f3b33d81337265eb74f32a3da9

  • SSDEEP

    12288:vIny5DYT9Z35JaanvWCWe9XdSzTHbRz+Wm2Wb:3UT955UantWe9ETx+Wm2

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\c9fc9bb0e45891df41ab686499995540c638ef114fb85647847c193629aec6c0.exe
    "C:\Users\Admin\AppData\Local\Temp\c9fc9bb0e45891df41ab686499995540c638ef114fb85647847c193629aec6c0.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:3468
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3760
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4680
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:752
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4536
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4812
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4748
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1596
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:428
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1660
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4060
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1672
          • 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:3640
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:212

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrE6AD.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            421355e4f8d947af5debe8abbcb81cd7

            SHA1

            f43ee7aa5f72b468941f86667cb4c547be052321

            SHA256

            0eb38391421f28b8a3f8a35ed7853236d3b51677d2ec5d5f70343f36a29b99b6

            SHA512

            c74a4d62608acb7c6b7ed17085f4fce680bdbf25a6530d82554a4cbe608d1f1453fa2f4c35d7e90dff9fd1585e5f545dce7d425a03b816583916393f10331e98

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            421355e4f8d947af5debe8abbcb81cd7

            SHA1

            f43ee7aa5f72b468941f86667cb4c547be052321

            SHA256

            0eb38391421f28b8a3f8a35ed7853236d3b51677d2ec5d5f70343f36a29b99b6

            SHA512

            c74a4d62608acb7c6b7ed17085f4fce680bdbf25a6530d82554a4cbe608d1f1453fa2f4c35d7e90dff9fd1585e5f545dce7d425a03b816583916393f10331e98

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            421355e4f8d947af5debe8abbcb81cd7

            SHA1

            f43ee7aa5f72b468941f86667cb4c547be052321

            SHA256

            0eb38391421f28b8a3f8a35ed7853236d3b51677d2ec5d5f70343f36a29b99b6

            SHA512

            c74a4d62608acb7c6b7ed17085f4fce680bdbf25a6530d82554a4cbe608d1f1453fa2f4c35d7e90dff9fd1585e5f545dce7d425a03b816583916393f10331e98

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            421355e4f8d947af5debe8abbcb81cd7

            SHA1

            f43ee7aa5f72b468941f86667cb4c547be052321

            SHA256

            0eb38391421f28b8a3f8a35ed7853236d3b51677d2ec5d5f70343f36a29b99b6

            SHA512

            c74a4d62608acb7c6b7ed17085f4fce680bdbf25a6530d82554a4cbe608d1f1453fa2f4c35d7e90dff9fd1585e5f545dce7d425a03b816583916393f10331e98

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            31c9ee5287d3554aa43386c81a8f5d86

            SHA1

            271f202aec7d2814e84eb83aa1aaabcc6d79b6b6

            SHA256

            96fec6a6a486be7defe7a120d8313ad277c1841756d7d7481fa33b6f45b9ad61

            SHA512

            cb0c9d3f1036fa0a69797510452cee3acd0a69a5f1b7637acb335036541ddd00333045cff4ceaf09d45845d2b8d2d931286faed80574e7947c10fc8d8a92766e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            31c9ee5287d3554aa43386c81a8f5d86

            SHA1

            271f202aec7d2814e84eb83aa1aaabcc6d79b6b6

            SHA256

            96fec6a6a486be7defe7a120d8313ad277c1841756d7d7481fa33b6f45b9ad61

            SHA512

            cb0c9d3f1036fa0a69797510452cee3acd0a69a5f1b7637acb335036541ddd00333045cff4ceaf09d45845d2b8d2d931286faed80574e7947c10fc8d8a92766e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            31c9ee5287d3554aa43386c81a8f5d86

            SHA1

            271f202aec7d2814e84eb83aa1aaabcc6d79b6b6

            SHA256

            96fec6a6a486be7defe7a120d8313ad277c1841756d7d7481fa33b6f45b9ad61

            SHA512

            cb0c9d3f1036fa0a69797510452cee3acd0a69a5f1b7637acb335036541ddd00333045cff4ceaf09d45845d2b8d2d931286faed80574e7947c10fc8d8a92766e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d3c58916228d79ca1f296c40f1709309

            SHA1

            74408dae7ae26fb363300503987951ca1ac67ba8

            SHA256

            7fb27db4efe1045e196ec4f726f360daf51233769f5b0a923f9dde585286f30d

            SHA512

            f4ef71c6a26670a3245be3c80f52bc33ddd2afc778ae1129798044d32d6ce85ad01db0a0d90a922657d6950ab4700707544ce68ae1b2cfaf5717dd80eaf68d3c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d3c58916228d79ca1f296c40f1709309

            SHA1

            74408dae7ae26fb363300503987951ca1ac67ba8

            SHA256

            7fb27db4efe1045e196ec4f726f360daf51233769f5b0a923f9dde585286f30d

            SHA512

            f4ef71c6a26670a3245be3c80f52bc33ddd2afc778ae1129798044d32d6ce85ad01db0a0d90a922657d6950ab4700707544ce68ae1b2cfaf5717dd80eaf68d3c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9827ac154496db2ce8db6a1e2cbb731b

            SHA1

            1a34bfcf269d66e63e4c7a437e28230642e3f042

            SHA256

            f7c59e1ecd3376d5585b8aa5403fb50a3b2d0be783a4141b2563d1b7fcd74327

            SHA512

            69a6989873f74b5763e4440fb655185ed55012db86056864fe81ed5ae73cfe1406dcd9145ae61139920d6b50ff3888528bf71588c61d9aa5ffc41461bb04d931

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9827ac154496db2ce8db6a1e2cbb731b

            SHA1

            1a34bfcf269d66e63e4c7a437e28230642e3f042

            SHA256

            f7c59e1ecd3376d5585b8aa5403fb50a3b2d0be783a4141b2563d1b7fcd74327

            SHA512

            69a6989873f74b5763e4440fb655185ed55012db86056864fe81ed5ae73cfe1406dcd9145ae61139920d6b50ff3888528bf71588c61d9aa5ffc41461bb04d931

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9827ac154496db2ce8db6a1e2cbb731b

            SHA1

            1a34bfcf269d66e63e4c7a437e28230642e3f042

            SHA256

            f7c59e1ecd3376d5585b8aa5403fb50a3b2d0be783a4141b2563d1b7fcd74327

            SHA512

            69a6989873f74b5763e4440fb655185ed55012db86056864fe81ed5ae73cfe1406dcd9145ae61139920d6b50ff3888528bf71588c61d9aa5ffc41461bb04d931

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            340794dd3815d377817efb970928871f

            SHA1

            2f429d3937a3164a7401254a133859b28bf7f899

            SHA256

            ad7ec17f46f60e6cc35ad253f31f07327d54b2bd2b8e9be52d775c81af36d75a

            SHA512

            1e08411fb0724bcbcb05dbb4b12c673cac2556288a727edf858f68bbad0bacb9a09d10a08f773a02ca5b9b2157d4ec3535acc32bdfc3f4d000b466b09433b268

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            340794dd3815d377817efb970928871f

            SHA1

            2f429d3937a3164a7401254a133859b28bf7f899

            SHA256

            ad7ec17f46f60e6cc35ad253f31f07327d54b2bd2b8e9be52d775c81af36d75a

            SHA512

            1e08411fb0724bcbcb05dbb4b12c673cac2556288a727edf858f68bbad0bacb9a09d10a08f773a02ca5b9b2157d4ec3535acc32bdfc3f4d000b466b09433b268

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            340794dd3815d377817efb970928871f

            SHA1

            2f429d3937a3164a7401254a133859b28bf7f899

            SHA256

            ad7ec17f46f60e6cc35ad253f31f07327d54b2bd2b8e9be52d775c81af36d75a

            SHA512

            1e08411fb0724bcbcb05dbb4b12c673cac2556288a727edf858f68bbad0bacb9a09d10a08f773a02ca5b9b2157d4ec3535acc32bdfc3f4d000b466b09433b268

          • memory/428-158-0x0000000000000000-mapping.dmp

          • memory/752-139-0x0000000000000000-mapping.dmp

          • memory/1596-153-0x0000000000000000-mapping.dmp

          • memory/1660-159-0x0000000000000000-mapping.dmp

          • memory/1672-166-0x0000000000000000-mapping.dmp

          • memory/3468-146-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3468-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3760-135-0x0000000000000000-mapping.dmp

          • memory/4060-165-0x0000000000000000-mapping.dmp

          • memory/4536-140-0x0000000000000000-mapping.dmp

          • memory/4680-136-0x0000000000000000-mapping.dmp

          • memory/4748-147-0x0000000000000000-mapping.dmp

          • memory/4812-141-0x0000000000000000-mapping.dmp