Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 48 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 class 1 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WaveCracked.exe
    "C:\Users\Admin\AppData\Local\Temp\WaveCracked.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3424
    • 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:4584
      • 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:2080
    • 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:920
      • 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:324
        • 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:556
      • \??\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: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2952
        • 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:4484
          • 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:3196
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          4⤵
            PID:2612

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      14cd6b47ebdee42e81ee66f9e3f7ec7f

      SHA1

      d22a2a150fafe8acc0fd0d5bd7b457008a01487b

      SHA256

      93b1878282493d9d08edc3cb4774d07884f4d6e8e728a10284649baadb01b599

      SHA512

      8246f8c47329024286c810c3a781656a8a5cb144e2aa07db00fe325788133b65fabecc60a08688f4540df5c77ee057ec79a7d1d2095fc0ee58e4c0963ae4ea98

    • C:\Windows\SysWOW64\Windows\Windows.exe

      Filesize

      233KB

      MD5

      54e2d75d45916e3ef7626b295a46fe5e

      SHA1

      31d13380d5770f71bce90d7d9dfed53e521bec69

      SHA256

      d2d5b60e6c8c766465f2423b8ce7b5ec80037ec3d074963be092619ae5351e51

      SHA512

      5bac07a43a48fc50f23ab62e930b2ae762b13679aba771af76919e84f07d19de508198b41a7a6dbb54816948422b5a95e5f537020b9d386b0035c221960ad1c0

    • memory/920-39-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/920-34-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-70-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-117-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-40-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-73-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-47-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-43-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-52-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-42-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-36-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-55-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-57-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-58-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-60-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-61-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-63-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-65-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-66-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-77-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-118-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-69-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-76-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-72-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-41-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-37-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-67-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-79-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-80-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-82-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-83-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-96-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-97-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-99-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-100-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-101-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-103-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-104-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-105-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-107-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-108-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-109-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-112-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-113-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/2952-115-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/3424-0-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB

    • memory/3424-35-0x0000000000400000-0x000000000048A000-memory.dmp

      Filesize

      552KB