Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    09-05-2024 10:57

General

  • Target

    3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe

  • Size

    1.0MB

  • MD5

    1b968f62b9672831c42e1cc776473a4b

  • SHA1

    14634650057f53408c9da09215bed0b08eb1f287

  • SHA256

    3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772

  • SHA512

    53e58d80069bfa0159c88598d544ff009c6823150b886e606b8ce00bc3d1c8619c8ce495fc564e5fc6d397a0c461d707c30684ee2d622970230a84b40401ab59

  • SSDEEP

    24576:mF1lOimK6SfT7rEu/hXpOfTi0kIU4y41sYBpJ312Zq:IZfou/hXYf3Lt11TJl2U

Malware Config

Extracted

Family

remcos

Botnet

STHost

C2

89.249.73.162:2479

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-TH3UQH

  • 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.

  • 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.

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
    "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\siRiSxOKgeg.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2632
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\siRiSxOKgeg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCF21.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2540
    • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
      "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
      2⤵
        PID:2568
      • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
        "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
        2⤵
          PID:2584
        • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
          "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
          2⤵
          • Suspicious use of SetWindowsHookEx
          PID:2588

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        7faee86bcca70c8e12b73b08ecefa626

        SHA1

        d05b76f8240eff36bdc647b6d1f4a42baf92e9f8

        SHA256

        9b7e8b790123c1c0915c7ea0506a9d1acc46250f7c10ec28a75f991cb9c9b1e0

        SHA512

        6374a8a7fe7046f81bb710fe4b37249f5c595507649491160693b8adc2639d279b7b4bb3f4162016f13851aa0b9f5abb8138ac745ddcffde6f315bcf56c12332

      • C:\Users\Admin\AppData\Local\Temp\tmpCF21.tmp

        Filesize

        1KB

        MD5

        40da0e35842f475f5a5ab277fcbb7e2a

        SHA1

        2fdc04b65599e8ac6fd28ed40c389b03c138ffc8

        SHA256

        d24c9a2d5f89912cadd98be67b37b52b13de4f27a1da62a58a20c21cc03904e4

        SHA512

        b4b91c9359f90db5d572e05f4907b1ec74acc6297c15548326ce5f1089390908362b7b0fc4d336fae57dd7e206b53e4bf9217087a76e4d829b9d497119f193f1

      • memory/1084-36-0x0000000074700000-0x0000000074DEE000-memory.dmp

        Filesize

        6.9MB

      • memory/1084-1-0x00000000002A0000-0x00000000003A6000-memory.dmp

        Filesize

        1.0MB

      • memory/1084-2-0x0000000074700000-0x0000000074DEE000-memory.dmp

        Filesize

        6.9MB

      • memory/1084-3-0x0000000001E20000-0x0000000001E40000-memory.dmp

        Filesize

        128KB

      • memory/1084-4-0x0000000001E50000-0x0000000001E64000-memory.dmp

        Filesize

        80KB

      • memory/1084-5-0x0000000005D60000-0x0000000005E20000-memory.dmp

        Filesize

        768KB

      • memory/1084-0-0x000000007470E000-0x000000007470F000-memory.dmp

        Filesize

        4KB

      • memory/2588-28-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-42-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-23-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-21-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-17-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-16-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-29-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-13-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-19-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-35-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-32-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2588-37-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-25-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-43-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-11-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-48-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-49-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-55-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-56-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-61-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-62-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-67-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-69-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-74-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2588-75-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB