Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/06/2024, 01:01

General

  • Target
    0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe
  • Size 95KB
  • Sample240629-bdawnaxard
  • SHA256 0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 107.173.62.181:17120

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-F9ZGZ8

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe
    "C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:836
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd" /t REG_SZ /F /D "C:\Users\Admin\Documents\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.pif"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5112
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd" /t REG_SZ /F /D "C:\Users\Admin\Documents\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.pif"
        3⤵
        • Adds Run key to start application
        PID:3060
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c Copy "C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe" "C:\Users\Admin\Documents\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.pif"
      2⤵
        PID:3252
      • C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe
        "C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3504
        • C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe
          C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe /stext "C:\Users\Admin\AppData\Local\Temp\cwtbtaqeegba"
          3⤵
            PID:468
          • C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe
            C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe /stext "C:\Users\Admin\AppData\Local\Temp\cwtbtaqeegba"
            3⤵
              PID:1260
            • C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe
              C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe /stext "C:\Users\Admin\AppData\Local\Temp\cwtbtaqeegba"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:4512
            • C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe
              C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe /stext "C:\Users\Admin\AppData\Local\Temp\nqgmutbxsoteodaw"
              3⤵
              • Accesses Microsoft Outlook accounts
              PID:2600
            • C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe
              C:\Users\Admin\AppData\Local\Temp\0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd.exe /stext "C:\Users\Admin\AppData\Local\Temp\pslfvllzowljqroanyy"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2392

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              logs.dat

              • Path C:\ProgramData\remcos\logs.dat
              • Size 144B
              • SHA256 d72d51155bc6b5b9b5b955188b8b386ea7c444a57686ae56068e413546105686
              • MD5 SHA1 SHA512

              cwtbtaqeegba

              • Path C:\Users\Admin\AppData\Local\Temp\cwtbtaqeegba
              • Size 4KB
              • SHA256 3e57870283553f2a55d674391c0f2d04f3324b916553c5fe05ea391dab4be00e
              • MD5 SHA1 SHA512 SSDEEP

              memory/836-8-0x0000000006D30000-0x0000000006D96000-memory.dmp

              memory/836-20-0x0000000074840000-0x0000000074FF0000-memory.dmp

              memory/836-4-0x0000000005680000-0x000000000568A000-memory.dmp

              memory/836-5-0x0000000074840000-0x0000000074FF0000-memory.dmp

              memory/836-6-0x0000000006A70000-0x0000000006AF2000-memory.dmp

              memory/836-7-0x0000000006C90000-0x0000000006D2C000-memory.dmp

              memory/836-0-0x000000007484E000-0x000000007484F000-memory.dmp

              memory/836-2-0x0000000005C80000-0x0000000006224000-memory.dmp

              memory/836-1-0x0000000000BC0000-0x0000000000BDE000-memory.dmp

              memory/836-3-0x00000000055C0000-0x0000000005652000-memory.dmp

              memory/2392-42-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/2392-43-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/2392-41-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/2600-46-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/2600-52-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/2600-47-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/2600-39-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/3504-35-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-63-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-27-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-28-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-30-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-31-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-33-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-24-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-91-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-25-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-23-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-22-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-90-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-21-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-18-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-76-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-15-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-75-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-14-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-68-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-12-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-56-0x0000000010000000-0x0000000010019000-memory.dmp

              memory/3504-60-0x0000000010000000-0x0000000010019000-memory.dmp

              memory/3504-59-0x0000000010000000-0x0000000010019000-memory.dmp

              memory/3504-61-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-26-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-11-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/3504-67-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/4512-54-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/4512-44-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/4512-51-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/4512-40-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/4512-37-0x0000000000400000-0x0000000000478000-memory.dmp