Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    12-08-2024 22:22

General

  • Target

    WaveCracked.exe

  • Size

    233KB

  • MD5

    54e2d75d45916e3ef7626b295a46fe5e

  • SHA1

    31d13380d5770f71bce90d7d9dfed53e521bec69

  • SHA256

    d2d5b60e6c8c766465f2423b8ce7b5ec80037ec3d074963be092619ae5351e51

  • SHA512

    5bac07a43a48fc50f23ab62e930b2ae762b13679aba771af76919e84f07d19de508198b41a7a6dbb54816948422b5a95e5f537020b9d386b0035c221960ad1c0

  • SSDEEP

    6144:9RLoVADCdeGx+T9mu2umTe7QBm+ip7BG:9VWzQT9DmTaQBPid

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

software-julia.gl.at.ply.gg:17106

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Windows.exe

  • copy_folder

    Windows

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %WinDir%\System32

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-YXDVYL

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • UAC bypass 3 TTPs 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 34 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WaveCracked.exe
    "C:\Users\Admin\AppData\Local\Temp\WaveCracked.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Windows\SysWOW64\cmd.exe
      /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2384
      • C:\Windows\SysWOW64\reg.exe
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        3⤵
        • UAC bypass
        • System Location Discovery: System Language Discovery
        • Modifies registry key
        PID:2528
    • C:\Windows\SysWOW64\Windows\Windows.exe
      "C:\Windows\SysWOW64\Windows\Windows.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1744
      • C:\Windows\SysWOW64\cmd.exe
        /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2760
        • C:\Windows\SysWOW64\reg.exe
          C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
          4⤵
          • UAC bypass
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:2848
      • \??\c:\program files (x86)\internet explorer\iexplore.exe
        "c:\program files (x86)\internet explorer\iexplore.exe"
        3⤵
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1980
        • C:\Windows\SysWOW64\cmd.exe
          /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1028
          • C:\Windows\SysWOW64\reg.exe
            C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
            5⤵
            • UAC bypass
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:836
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          4⤵
            PID:2780
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe
            4⤵
              PID:2728

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        0cca0a4049fd4880fda6fb3ed4a1be1e

        SHA1

        15ef78b06b825c6e6d62bed4e4ded7130378e255

        SHA256

        a67d4a842a69130c40035d7383ffd9813bbcb9d715531e72cd6f52d30f8a071b

        SHA512

        3b690e4bbb90781fbfa0c48aa915aab78b31202d14da7a9fb48e5af3c56f71c413d1c355bb1edddb2108d93b690ec0365609970c3f028b9b580600b97ef1f110

      • \Windows\SysWOW64\Windows\Windows.exe

        Filesize

        233KB

        MD5

        54e2d75d45916e3ef7626b295a46fe5e

        SHA1

        31d13380d5770f71bce90d7d9dfed53e521bec69

        SHA256

        d2d5b60e6c8c766465f2423b8ce7b5ec80037ec3d074963be092619ae5351e51

        SHA512

        5bac07a43a48fc50f23ab62e930b2ae762b13679aba771af76919e84f07d19de508198b41a7a6dbb54816948422b5a95e5f537020b9d386b0035c221960ad1c0

      • memory/1744-15-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1744-20-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-40-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-44-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-78-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-23-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-22-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-29-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-27-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-79-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-21-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-18-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1980-35-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-37-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-38-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-76-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-41-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-43-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-75-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-73-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-47-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-48-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-50-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-51-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-64-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-65-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-68-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-67-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-69-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/1980-74-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/2092-10-0x00000000034B0000-0x000000000353A000-memory.dmp

        Filesize

        552KB

      • memory/2092-11-0x00000000034B0000-0x000000000353A000-memory.dmp

        Filesize

        552KB

      • memory/2092-0-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/2092-14-0x0000000000400000-0x000000000048A000-memory.dmp

        Filesize

        552KB

      • memory/2728-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB