Analysis

  • max time kernel
    148s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-11-2024 10:39

General

  • Target

    a62483d750894703fef38a93f05ed625a25aba89fe80f79318d1193b39cdc198.exe

  • Size

    3.4MB

  • MD5

    2a3fffe85434fb8cc6a49f3778fc018e

  • SHA1

    fc02539e02aeead5dcb46748c8ba92972b2ebbe4

  • SHA256

    a62483d750894703fef38a93f05ed625a25aba89fe80f79318d1193b39cdc198

  • SHA512

    89e8dda82c126f4a5b05c40bcd7cbbbd961c03822aaf4cef09d8a66b02973bb8d0340ffee64ed4aeb18b113cdf4f1aba7464dd290d02edadbd94dea3408496f0

  • SSDEEP

    12288:bezvK8hN5Ei531csIOMRn0ubNDLGgzfRRig8Bl7b76bwpXdcHe+8RpqZUJ9AR:bGS8hwi5RIN0ubJSgOPlUz8RIs9AR

Malware Config

Extracted

Family

remcos

Botnet

WEgood

C2

198.46.178.152:2025

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-BQ3GSA

  • 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).

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a62483d750894703fef38a93f05ed625a25aba89fe80f79318d1193b39cdc198.exe
    "C:\Users\Admin\AppData\Local\Temp\a62483d750894703fef38a93f05ed625a25aba89fe80f79318d1193b39cdc198.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2980
    • 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\a62483d750894703fef38a93f05ed625a25aba89fe80f79318d1193b39cdc198.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2692
    • C:\Windows\System32\svchost.exe
      "C:\Windows\System32\svchost.exe"
      2⤵
        PID:2824
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        2⤵
          PID:2552
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
          2⤵
            PID:2588
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
            2⤵
              PID:1932
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
              2⤵
                PID:2540

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • memory/1932-30-0x0000000000400000-0x000000000047F000-memory.dmp

              Filesize

              508KB

            • memory/2692-15-0x0000000002870000-0x00000000028F0000-memory.dmp

              Filesize

              512KB

            • memory/2692-17-0x00000000027E0000-0x00000000027E8000-memory.dmp

              Filesize

              32KB

            • memory/2692-16-0x000000001B530000-0x000000001B812000-memory.dmp

              Filesize

              2.9MB

            • memory/2824-4-0x0000000000400000-0x000000000047F000-memory.dmp

              Filesize

              508KB

            • memory/2824-10-0x0000000000400000-0x000000000047F000-memory.dmp

              Filesize

              508KB

            • memory/2824-7-0x0000000000400000-0x000000000047F000-memory.dmp

              Filesize

              508KB

            • memory/2824-6-0x0000000000400000-0x000000000047F000-memory.dmp

              Filesize

              508KB

            • memory/2824-5-0x0000000000400000-0x000000000047F000-memory.dmp

              Filesize

              508KB

            • memory/2824-9-0x0000000000400000-0x000000000047F000-memory.dmp

              Filesize

              508KB

            • memory/2980-0-0x000007FEF4E53000-0x000007FEF4E54000-memory.dmp

              Filesize

              4KB

            • memory/2980-3-0x000000001B540000-0x000000001B610000-memory.dmp

              Filesize

              832KB

            • memory/2980-2-0x000007FEF4E50000-0x000007FEF583C000-memory.dmp

              Filesize

              9.9MB

            • memory/2980-1-0x00000000003A0000-0x00000000003A8000-memory.dmp

              Filesize

              32KB

            • memory/2980-31-0x000007FEF4E50000-0x000007FEF583C000-memory.dmp

              Filesize

              9.9MB