Analysis

  • max time kernel
    148s
  • max time network
    150s
  • 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 21:05

General

  • Target

    new.exe

  • Size

    483KB

  • MD5

    ef2d8a16de6f9ecc5c53fd1fb3f5156a

  • SHA1

    2646722bb3cff01dfd3276ef94be73ab0c065e4d

  • SHA256

    c0655fbc9631b46f22ca1e61594e98e4ce4061e51a63ccae5d112ac74fa3ff6c

  • SHA512

    8a4f6bd37d1e0161b11d8161c1f564f6cd7a1931beb74727a905eb408379189fecff1334201174eca7c422d32777f1baf169c45d8d90ab4cd11040d396b22446

  • SSDEEP

    12288:QTlrYw1RUh3NFn+N5WfIQIjbs/ZBc/T4:gpRUh3NDfIQIjeZS

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

k-peterson.gl.at.ply.gg:64076

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-3IZME9

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • 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
  • 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 WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\new.exe
    "C:\Users\Admin\AppData\Local\Temp\new.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:1828
    • 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:3604
      • 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:456
    • 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:4888
      • 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:4692
        • 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:2640
      • \??\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 WriteProcessMemory
        PID:872
        • 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:2252
          • 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:3848
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          4⤵
            PID:4824

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      483KB

      MD5

      ef2d8a16de6f9ecc5c53fd1fb3f5156a

      SHA1

      2646722bb3cff01dfd3276ef94be73ab0c065e4d

      SHA256

      c0655fbc9631b46f22ca1e61594e98e4ce4061e51a63ccae5d112ac74fa3ff6c

      SHA512

      8a4f6bd37d1e0161b11d8161c1f564f6cd7a1931beb74727a905eb408379189fecff1334201174eca7c422d32777f1baf169c45d8d90ab4cd11040d396b22446

    • memory/872-44-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-51-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-46-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-39-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-36-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-45-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-55-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-42-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-47-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-33-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-56-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-35-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-43-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-48-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-49-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-50-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-34-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-52-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-53-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/872-54-0x0000000000500000-0x0000000000582000-memory.dmp

      Filesize

      520KB

    • memory/4824-41-0x00000000012F0000-0x0000000001372000-memory.dmp

      Filesize

      520KB

    • memory/4824-40-0x00000000012F0000-0x0000000001372000-memory.dmp

      Filesize

      520KB