Analysis

  • max time kernel
    147s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/11/2024, 02:59

General

  • Target

    6e2e6d5f67b4bd2df522de36e957e5d0b3f97eb8b3a6a5460cc3aa32cf112cdc.exe

  • Size

    3.5MB

  • MD5

    7b9e3156025bcfaad0f0f61777fed384

  • SHA1

    2b025c4502f2b08485d9ee8b223455f31c7d3735

  • SHA256

    6e2e6d5f67b4bd2df522de36e957e5d0b3f97eb8b3a6a5460cc3aa32cf112cdc

  • SHA512

    be32a02a3417efcd08327e20524970d1bcb7deeaf0ccb8f7382185ac33734a7c70274bd766c44ade77f4b7eaa65ad8ad015e4d6ced69a39f9143bdf7a55c5b38

  • SSDEEP

    24576:1PdHrM3P9qf8Ww0wqHgbmsTVp7w/9+xXvR38apwpymoha9t:1PtrMf9qOqH9sBpaAxXpMuw4fh0

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

198.46.178.148:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-PND88E

  • 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.

  • Remcos family
  • UAC bypass 3 TTPs 1 IoCs
  • 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.

  • Uses the VBS compiler for execution 1 TTPs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e2e6d5f67b4bd2df522de36e957e5d0b3f97eb8b3a6a5460cc3aa32cf112cdc.exe
    "C:\Users\Admin\AppData\Local\Temp\6e2e6d5f67b4bd2df522de36e957e5d0b3f97eb8b3a6a5460cc3aa32cf112cdc.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2484
    • 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\6e2e6d5f67b4bd2df522de36e957e5d0b3f97eb8b3a6a5460cc3aa32cf112cdc.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2728
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
      2⤵
        PID:3024
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
        2⤵
          PID:2736
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
          2⤵
            PID:2648
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
            2⤵
              PID:1852
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              PID:2404
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
              2⤵
                PID:2560

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • memory/2404-59-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2484-1-0x0000000000230000-0x0000000000266000-memory.dmp

                    Filesize

                    216KB

                  • memory/2484-2-0x000000001B4B0000-0x000000001B580000-memory.dmp

                    Filesize

                    832KB

                  • memory/2484-3-0x000007FEF5440000-0x000007FEF5E2C000-memory.dmp

                    Filesize

                    9.9MB

                  • memory/2484-60-0x000007FEF5440000-0x000007FEF5E2C000-memory.dmp

                    Filesize

                    9.9MB

                  • memory/2484-0-0x000007FEF5443000-0x000007FEF5444000-memory.dmp

                    Filesize

                    4KB

                  • memory/2728-8-0x0000000002A20000-0x0000000002AA0000-memory.dmp

                    Filesize

                    512KB

                  • memory/2728-9-0x000000001B790000-0x000000001BA72000-memory.dmp

                    Filesize

                    2.9MB

                  • memory/2728-10-0x00000000027E0000-0x00000000027E8000-memory.dmp

                    Filesize

                    32KB

                  • memory/2736-11-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2736-23-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2736-21-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2736-19-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2736-15-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2736-14-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2736-25-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2736-17-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB