Analysis

  • max time kernel
    130s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 02:59

General

  • Target

    55df5179a90de41691dd26553b8264c0_NEAS.exe

  • Size

    287KB

  • MD5

    55df5179a90de41691dd26553b8264c0

  • SHA1

    86093a79408544dedfcb510eca0ec6fd27ff9aaf

  • SHA256

    406443462ef7c000ded1f4d0286e69be56cf48988f1d7f614b456f9037182612

  • SHA512

    4ec163485adc8bdb9416cffa91b3bd3ff3450f0b3835eefeec2585681c4a286a5581ecbf14b4711b2c0517c00726a688c58235ef9d0324e05205f9ae17c299e3

  • SSDEEP

    6144:p2wA/HQR9mgC74LtlgTvoRRcWd6V2NeTKDEeW3JHMRzfSAv:nA/QR9mb4Lt7cWd6VgeTKDEp3JifSo

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 4 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55df5179a90de41691dd26553b8264c0_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\55df5179a90de41691dd26553b8264c0_NEAS.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3664
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\uqezluo.exe "C:\Users\Admin\AppData\Local\Temp\55df5179a90de41691dd26553b8264c0_NEAS.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3700
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:1040
      • C:\Users\Admin\AppData\Local\Temp\uqezluo.exe
        C:\Users\Admin\AppData\Local\Temp\\uqezluo.exe "C:\Users\Admin\AppData\Local\Temp\55df5179a90de41691dd26553b8264c0_NEAS.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1612
        • \??\c:\Program Files\cftsxig\jbnuj.exe
          "c:\Program Files\cftsxig\jbnuj.exe" "c:\Program Files\cftsxig\jbnuj.dll",ClassObject C:\Users\Admin\AppData\Local\Temp\uqezluo.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3916

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\cftsxig\jbnuj.exe

          Filesize

          60KB

          MD5

          889b99c52a60dd49227c5e485a016679

          SHA1

          8fa889e456aa646a4d0a4349977430ce5fa5e2d7

          SHA256

          6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

          SHA512

          08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

        • C:\Users\Admin\AppData\Local\Temp\uqezluo.exe

          Filesize

          287KB

          MD5

          f59cffd900e19158ce2bc2bcbd227179

          SHA1

          ef4c0feace972f70bb95cdf76df551e18e170a2b

          SHA256

          a27463c953b577360e8ffee0271f27b9579d2f8a91dd2673e3fb21e3a2001ede

          SHA512

          ba9696cf058bc49308b66d1064db618d1e3cdf0f1b92d8d9608b882b3201e920d068e9820a73d0c17320f8e92f69af14cd386c167c2e404e4145e43701aa13d0

        • \??\c:\Program Files\cftsxig\jbnuj.dll

          Filesize

          200KB

          MD5

          8c444e8a00905affa39434ccc858c4da

          SHA1

          1a822ce25df124ebaec8c2b5472ce6d9effaddbe

          SHA256

          9d3a85922b60d20db6e700730482ed2bc528c7ff8793437e0f8d01280c350e0d

          SHA512

          505a5f8194c1a73d277a24559f5260164dbe1f94d05ba66033e23b51f75f93d2188726e2b7373a4bf909553dae31cdff06a5290955c871de913ce7d2b161f0c4

        • memory/1612-9-0x0000000000400000-0x00000000004BEBC6-memory.dmp

          Filesize

          762KB

        • memory/1612-17-0x0000000000400000-0x00000000004BEBC6-memory.dmp

          Filesize

          762KB

        • memory/1612-8-0x0000000000400000-0x00000000004BEBC6-memory.dmp

          Filesize

          762KB

        • memory/3664-4-0x0000000000401000-0x0000000000475000-memory.dmp

          Filesize

          464KB

        • memory/3664-0-0x0000000000400000-0x00000000004BEBC6-memory.dmp

          Filesize

          762KB

        • memory/3664-3-0x0000000000400000-0x00000000004BEBC6-memory.dmp

          Filesize

          762KB

        • memory/3664-1-0x0000000000401000-0x0000000000475000-memory.dmp

          Filesize

          464KB

        • memory/3916-18-0x0000000010000000-0x0000000010070000-memory.dmp

          Filesize

          448KB

        • memory/3916-19-0x0000000010000000-0x0000000010070000-memory.dmp

          Filesize

          448KB

        • memory/3916-21-0x0000000010000000-0x0000000010070000-memory.dmp

          Filesize

          448KB