Analysis

  • max time kernel
    153s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-05-2024 10:59

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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
    "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4656
    • 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:2920
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\siRiSxOKgeg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7EA1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3688
    • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
      "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
      2⤵
        PID:3152
      • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
        "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
        2⤵
        • Suspicious use of SetWindowsHookEx
        PID:3572
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3776 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:4340

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        e69190ee41892729ca1117cd221e3c87

        SHA1

        baedfa5f87f4156d68f6a6070591755dc055e3df

        SHA256

        488456f0708bd00766cde8545c9ba6d353063d0a86fe5c66af5ab15d4eeac26a

        SHA512

        2dd9526dca4b2351f82ce92a0c7c26c5f477deef945506f3006504f079b50e020134601b8016f3482876419877cf20d92987c3492a769dedf2605629f5adae0f

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4ovw5gge.v0l.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\tmp7EA1.tmp

        Filesize

        1KB

        MD5

        37487cb02e325024c1b37a1aee05e457

        SHA1

        d9ce40abd54ab958ba2b48e22e6228d8f77e95e8

        SHA256

        2f33599469bdf5108b4d66ddb516120791168c19f5902198205bc4f25afedad4

        SHA512

        16252b4c98c47fedcbd71321a9b3a18f7e147b182fedb9ea5f1f4c36f070e7c9ff088da6e2b035d980ae13dc73c3edf31e8f79e7e38b49b9e90f7e7801b73cec

      • memory/2920-44-0x0000000005AF0000-0x0000000005E44000-memory.dmp

        Filesize

        3.3MB

      • memory/2920-48-0x0000000071340000-0x000000007138C000-memory.dmp

        Filesize

        304KB

      • memory/2920-45-0x0000000006100000-0x000000000611E000-memory.dmp

        Filesize

        120KB

      • memory/2920-46-0x0000000006190000-0x00000000061DC000-memory.dmp

        Filesize

        304KB

      • memory/2920-73-0x0000000074B80000-0x0000000075330000-memory.dmp

        Filesize

        7.7MB

      • memory/2920-69-0x0000000007740000-0x0000000007748000-memory.dmp

        Filesize

        32KB

      • memory/2920-68-0x0000000007750000-0x000000000776A000-memory.dmp

        Filesize

        104KB

      • memory/2920-67-0x0000000007660000-0x0000000007674000-memory.dmp

        Filesize

        80KB

      • memory/2920-15-0x0000000074B80000-0x0000000075330000-memory.dmp

        Filesize

        7.7MB

      • memory/2920-16-0x00000000027B0000-0x00000000027E6000-memory.dmp

        Filesize

        216KB

      • memory/2920-66-0x0000000007650000-0x000000000765E000-memory.dmp

        Filesize

        56KB

      • memory/2920-18-0x0000000074B80000-0x0000000075330000-memory.dmp

        Filesize

        7.7MB

      • memory/2920-20-0x0000000005230000-0x0000000005858000-memory.dmp

        Filesize

        6.2MB

      • memory/2920-65-0x0000000007620000-0x0000000007631000-memory.dmp

        Filesize

        68KB

      • memory/2920-64-0x0000000007680000-0x0000000007716000-memory.dmp

        Filesize

        600KB

      • memory/2920-62-0x0000000007470000-0x000000000747A000-memory.dmp

        Filesize

        40KB

      • memory/2920-61-0x0000000007400000-0x000000000741A000-memory.dmp

        Filesize

        104KB

      • memory/2920-25-0x0000000005030000-0x0000000005052000-memory.dmp

        Filesize

        136KB

      • memory/2920-26-0x0000000005860000-0x00000000058C6000-memory.dmp

        Filesize

        408KB

      • memory/2920-60-0x0000000007A50000-0x00000000080CA000-memory.dmp

        Filesize

        6.5MB

      • memory/2920-59-0x00000000070E0000-0x0000000007183000-memory.dmp

        Filesize

        652KB

      • memory/2920-29-0x0000000005A80000-0x0000000005AE6000-memory.dmp

        Filesize

        408KB

      • memory/2920-47-0x00000000066F0000-0x0000000006722000-memory.dmp

        Filesize

        200KB

      • memory/2920-58-0x00000000066B0000-0x00000000066CE000-memory.dmp

        Filesize

        120KB

      • memory/3572-22-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-82-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-103-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-90-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-77-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-36-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-30-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-33-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-28-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-101-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-23-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-96-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-21-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-95-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-89-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-83-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/3572-76-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4656-10-0x000000000C910000-0x000000000C9AC000-memory.dmp

        Filesize

        624KB

      • memory/4656-7-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

        Filesize

        4KB

      • memory/4656-9-0x00000000097B0000-0x0000000009870000-memory.dmp

        Filesize

        768KB

      • memory/4656-6-0x00000000055F0000-0x0000000005610000-memory.dmp

        Filesize

        128KB

      • memory/4656-1-0x0000000000950000-0x0000000000A56000-memory.dmp

        Filesize

        1.0MB

      • memory/4656-2-0x00000000059D0000-0x0000000005F74000-memory.dmp

        Filesize

        5.6MB

      • memory/4656-8-0x0000000005610000-0x0000000005624000-memory.dmp

        Filesize

        80KB

      • memory/4656-17-0x0000000074B80000-0x0000000075330000-memory.dmp

        Filesize

        7.7MB

      • memory/4656-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

        Filesize

        4KB

      • memory/4656-3-0x00000000054C0000-0x0000000005552000-memory.dmp

        Filesize

        584KB

      • memory/4656-4-0x0000000074B80000-0x0000000075330000-memory.dmp

        Filesize

        7.7MB

      • memory/4656-27-0x0000000074B80000-0x0000000075330000-memory.dmp

        Filesize

        7.7MB

      • memory/4656-5-0x0000000005460000-0x000000000546A000-memory.dmp

        Filesize

        40KB