Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-08-2024 19:12

General

  • Target

    FTE98767800000.exe

  • Size

    1.4MB

  • MD5

    e418c8ddea38739c5fa4e6ee469ffd47

  • SHA1

    52ee59d5c7d3768056ac7809aea362e8adbeaa74

  • SHA256

    8fcca28a02a116ed9c02bfdcbe3bfb47206592110805aaeda4ad5c55aba82a74

  • SHA512

    3879b2ff0821511222cd9de8dc369037df52f655c2be937c4499cd9006049ed3a671c6ccd33f0adfa499aec935e14e388449574b5f282e6f5a230993b9192128

  • SSDEEP

    12288:0EOm/U97V194bWub1V5jdJislsmq/aWPNUEFkWsnFvM1XcCDB6iCuIgWPm3A5kIo:m9B19g5V5nxsmqaWPaEXsnfCPu6BH

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.210.150.26:8787

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-Q4NYK2

  • 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 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Windows security modification 2 TTPs 3 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Runs regedit.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FTE98767800000.exe
    "C:\Users\Admin\AppData\Local\Temp\FTE98767800000.exe"
    1⤵
    • UAC bypass
    • Windows security bypass
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3864
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\FTE98767800000.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4956
    • C:\Windows\regedit.exe
      "C:\Windows\regedit.exe"
      2⤵
      • Runs regedit.exe
      PID:2396
    • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
      "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
      2⤵
        PID:4432
      • C:\Windows\System32\notepad.exe
        "C:\Windows\System32\notepad.exe"
        2⤵
          PID:2696
        • C:\Windows\System32\svchost.exe
          "C:\Windows\System32\svchost.exe"
          2⤵
            PID:2932
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
            2⤵
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:428
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe /stext "C:\Users\Admin\AppData\Local\Temp\kgdjgbupvgfg"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:4208
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe /stext "C:\Users\Admin\AppData\Local\Temp\najbhuerroxloha"
              3⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:2888
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe /stext "C:\Users\Admin\AppData\Local\Temp\xcouimpkfwpyznouxxj"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2644
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
            2⤵
              PID:3536

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\remcos\logs.dat

            Filesize

            144B

            MD5

            3753dc57e77f6484f527057d02195cb5

            SHA1

            42b4c1f3b84677a870ed448607f01b771649faf4

            SHA256

            1c9aebcb6d3e9c93c39a8ef074719e253b43a96ad212ca4fd4bf1184ae44a8a7

            SHA512

            fb7e26f81cccd61f9579d792616362ffa81fde4b81b13cb2da6f4bd86a57d198479b42f21197ad79d65fc5cea75bc7b856c258af63a87ec7086c89138a0e2042

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iv3tr5ec.jy5.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • C:\Users\Admin\AppData\Local\Temp\kgdjgbupvgfg

            Filesize

            4KB

            MD5

            1891919175c888ce82e9bd8a047b01ad

            SHA1

            502a6892a5d27ecb791ac5aa6d8586944f540453

            SHA256

            a6c43b4e4b8681cf0ef56c49c730fa77e34dc82db0260253a3ba75039030b9ec

            SHA512

            8bb940050b1abf6c27db133ed446f41e108f670f361ed5102408832ce33d9b87cd0880723441f1632292eeeb0a319c4e0fac0ea659eb55ebe1130cc3e6c776a3

          • memory/428-55-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-89-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-90-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-82-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-81-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-74-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-73-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-20-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-21-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-22-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-23-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-24-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-27-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-28-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-66-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-31-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-65-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-33-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-32-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-35-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-59-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-57-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-56-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-54-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/428-30-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/428-53-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/428-50-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/2644-39-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2644-44-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2644-43-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2888-42-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/2888-37-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/2888-40-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/3864-29-0x00007FFA830C0000-0x00007FFA83B81000-memory.dmp

            Filesize

            10.8MB

          • memory/3864-0-0x00007FFA830C3000-0x00007FFA830C5000-memory.dmp

            Filesize

            8KB

          • memory/3864-1-0x0000023832CA0000-0x0000023832CAC000-memory.dmp

            Filesize

            48KB

          • memory/3864-3-0x000002384D100000-0x000002384D1D0000-memory.dmp

            Filesize

            832KB

          • memory/3864-2-0x00007FFA830C0000-0x00007FFA83B81000-memory.dmp

            Filesize

            10.8MB

          • memory/4208-36-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4208-41-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4208-38-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4956-5-0x00000205F9020000-0x00000205F9042000-memory.dmp

            Filesize

            136KB

          • memory/4956-6-0x00007FFA830C0000-0x00007FFA83B81000-memory.dmp

            Filesize

            10.8MB

          • memory/4956-4-0x00007FFA830C0000-0x00007FFA83B81000-memory.dmp

            Filesize

            10.8MB

          • memory/4956-19-0x00007FFA830C0000-0x00007FFA83B81000-memory.dmp

            Filesize

            10.8MB

          • memory/4956-7-0x00007FFA830C0000-0x00007FFA83B81000-memory.dmp

            Filesize

            10.8MB