Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-09-2024 22:08

General

  • Target

    a5f81a6aab1ec4f11a07c8f5c1a981363017341eddcd7f8a7569acb3856ce78d.exe

  • Size

    469KB

  • MD5

    58c1d6a53fc99b39fda4a93d75d886f9

  • SHA1

    fa83cdf828a87aed7b25268d5e41e6e0fc2ef7f0

  • SHA256

    a5f81a6aab1ec4f11a07c8f5c1a981363017341eddcd7f8a7569acb3856ce78d

  • SHA512

    b3dee6eb5f5de7ba3925f7cd757faa739f84cda1765e8dd138a024fc6ab2cb4573aabc8cf612f7deca7f0a64df2291074028da99823b79cc985609335253d5b3

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSeDn9:uiLJbpI7I2WhQqZ7eD9

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

accessories-retrieve.gl.at.ply.gg:13970

192.168.1.56:13970

accessories-retrieve.gl.at.ply.gg:9999

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Solara2.exe

  • copy_folder

    Health

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %WinDir%\System32

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    filer32

  • keylog_path

    %WinDir%\System32

  • mouse_option

    false

  • mutex

    Rmc-7ARNVK

  • screenshot_crypt

    true

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %WinDir%\System32

  • screenshot_time

    10

  • startup_value

    WindowsHealth

  • 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
  • Adds policy Run key to start application 2 TTPs 6 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops file in System32 directory 6 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 11 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: MapViewOfSection 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a5f81a6aab1ec4f11a07c8f5c1a981363017341eddcd7f8a7569acb3856ce78d.exe
    "C:\Users\Admin\AppData\Local\Temp\a5f81a6aab1ec4f11a07c8f5c1a981363017341eddcd7f8a7569acb3856ce78d.exe"
    1⤵
    • Adds policy Run key to start application
    • Adds Run key to start application
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2128
    • 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:2552
      • 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:2392
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2344
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\Windows\SysWOW64\Health\Solara2.exe"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:544
        • C:\Windows\SysWOW64\Health\Solara2.exe
          C:\Windows\SysWOW64\Health\Solara2.exe
          4⤵
          • Adds policy Run key to start application
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2708
          • 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
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2348
            • 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
              6⤵
              • 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"
            5⤵
            • Adds policy Run key to start application
            • Adds Run key to start application
            • Drops file in System32 directory
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2276
            • 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
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2860
              • 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
                7⤵
                • UAC bypass
                • System Location Discovery: System Language Discovery
                • Modifies registry key
                PID:2876
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:2668

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\install.vbs

      Filesize

      638B

      MD5

      fa9d21bb5f1f6becce439f2a64155aba

      SHA1

      7acb9694231af658cf8d363873b3727a9d901b73

      SHA256

      a25eb332568fccab1714f38e9e2affe1b7902f224f106988cff335e45b51991c

      SHA512

      fe93d109b031dbc23c0a2a161a25fa2a80f3d3220fb6dbd72934367f46dc65f23d06fe543f8683b3b32adeb3a0789d32cf408a161a02e60be9c0e882bc4b4749

    • C:\Windows\SysWOW64\filer32\logs.dat

      Filesize

      260B

      MD5

      633fe3d7c2dc1bf8a9350ffa742e922e

      SHA1

      36028e8a994d32557d8d2df2bd8fa37c2b415212

      SHA256

      e9936c59a35bdb529fff7780a7a94cc6253fd2eff56e7950b0429fa5f6e790e9

      SHA512

      74b6800d9936152727488e964ad79a6216041130d734574370f42bce6fd39ea9c70d1b719bd628bdd657f0a846f1a1ac9ed0ce70654b9ba3dc93780217a66389

    • \Windows\SysWOW64\Health\Solara2.exe

      Filesize

      469KB

      MD5

      58c1d6a53fc99b39fda4a93d75d886f9

      SHA1

      fa83cdf828a87aed7b25268d5e41e6e0fc2ef7f0

      SHA256

      a5f81a6aab1ec4f11a07c8f5c1a981363017341eddcd7f8a7569acb3856ce78d

      SHA512

      b3dee6eb5f5de7ba3925f7cd757faa739f84cda1765e8dd138a024fc6ab2cb4573aabc8cf612f7deca7f0a64df2291074028da99823b79cc985609335253d5b3

    • memory/2276-44-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-31-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-14-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-69-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-20-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-18-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-13-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-68-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-63-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-25-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2276-12-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-37-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-38-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-43-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-11-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-50-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-55-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-56-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2276-62-0x0000000000080000-0x00000000000FF000-memory.dmp

      Filesize

      508KB

    • memory/2668-22-0x0000000000130000-0x00000000001AF000-memory.dmp

      Filesize

      508KB

    • memory/2668-23-0x0000000000130000-0x00000000001AF000-memory.dmp

      Filesize

      508KB

    • memory/2668-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB