Analysis

  • max time kernel
    147s
  • 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
    10-12-2024 02:54

General

  • Target

    3B84DCE82113710E5AE3F379EBD9FA13.exe

  • Size

    1.1MB

  • MD5

    3b84dce82113710e5ae3f379ebd9fa13

  • SHA1

    26df2f5f9ba223ce4848586582172c9c20516416

  • SHA256

    b25e19cd5dc45047c4ad68fbe940dd1f923800201666adf9164ec5fe5d74f6e4

  • SHA512

    299ed1e965189ff3d25bd6e12790d93648c0d69959eeab8d5d7c4563c3488764eadf968855782d50d68c98d67a6a63be80828367ec704a102c407ebd7a2fa871

  • SSDEEP

    24576:wHeZDOyc0wCqMXY1nhtFUSU6xNP1cQYY:wHbLm4ftFzx7c

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.149.241.204:435

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-DX92V7

  • 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 2 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 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.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
    "C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2460
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OZIxXQGIP.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3688
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OZIxXQGIP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1B15.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3576
    • C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
      "C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:3580
      • C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
        C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe /stext "C:\Users\Admin\AppData\Local\Temp\uuvwmoegmkxjorqbxdrtpkwvtmjoorkqv"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:872
      • C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
        C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe /stext "C:\Users\Admin\AppData\Local\Temp\woign"
        3⤵
          PID:5084
        • C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
          C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe /stext "C:\Users\Admin\AppData\Local\Temp\woign"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:2664
        • C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
          C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe /stext "C:\Users\Admin\AppData\Local\Temp\hqoznzzb"
          3⤵
          • Suspicious use of UnmapMainImage
          PID:1620
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1620 -s 12
            4⤵
            • Program crash
            PID:2396
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1620 -ip 1620
      1⤵
        PID:2176

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h4op3gqm.21p.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\tmp1B15.tmp

        Filesize

        1KB

        MD5

        a4a0cc1c04e421366d1112430eee8c2c

        SHA1

        be8c73ea261f7d83c5dd3c1ae33604d2f5e9c85c

        SHA256

        fc2c652560811c161d37bb0aa861e956dce2a9ac45900cd8f9eab28cc63cc5ae

        SHA512

        c3418fe5b8caaafdaa3a99b9118658f59c797cc11b39c0fe3bab19af2bb491905c752836a4cd8350e6d07ab02f1a62dd05b6aa52f8c76b2d8b046557dcd7c0db

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

        Filesize

        4KB

        MD5

        c3c5f2de99b7486f697634681e21bab0

        SHA1

        00f90d495c0b2b63fde6532e033fdd2ade25633d

        SHA256

        76296dc29f718988107d35d0e0b835c2bf3fc7405e79e5121aa4738f82b51582

        SHA512

        7c60ffdc093de30e793d20768877f2f586bee3e948767871f9a1139252d5d2f593ba6f88ce0ed5f72c79faddb26186792df0581e4b6c84d405c44d9d12f951b8

      • memory/872-39-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/872-40-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/872-41-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1620-53-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2460-10-0x00000000093A0000-0x000000000943C000-memory.dmp

        Filesize

        624KB

      • memory/2460-4-0x00000000747C0000-0x0000000074F70000-memory.dmp

        Filesize

        7.7MB

      • memory/2460-9-0x0000000009240000-0x0000000009302000-memory.dmp

        Filesize

        776KB

      • memory/2460-34-0x00000000747C0000-0x0000000074F70000-memory.dmp

        Filesize

        7.7MB

      • memory/2460-7-0x00000000747CE000-0x00000000747CF000-memory.dmp

        Filesize

        4KB

      • memory/2460-6-0x00000000084F0000-0x0000000008508000-memory.dmp

        Filesize

        96KB

      • memory/2460-5-0x0000000002ED0000-0x0000000002EDA000-memory.dmp

        Filesize

        40KB

      • memory/2460-8-0x00000000747C0000-0x0000000074F70000-memory.dmp

        Filesize

        7.7MB

      • memory/2460-1-0x0000000000AC0000-0x0000000000BD4000-memory.dmp

        Filesize

        1.1MB

      • memory/2460-3-0x0000000007A70000-0x0000000007B02000-memory.dmp

        Filesize

        584KB

      • memory/2460-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

        Filesize

        4KB

      • memory/2460-2-0x0000000007F40000-0x00000000084E4000-memory.dmp

        Filesize

        5.6MB

      • memory/2664-48-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2664-54-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2664-47-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/3580-24-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-32-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-35-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-101-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-33-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-100-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-99-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-21-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-98-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-38-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-97-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-29-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-25-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-27-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-22-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-96-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-95-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-94-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-93-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-92-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/3580-91-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/3580-90-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/3580-87-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/3688-63-0x000000006FF70000-0x000000006FFBC000-memory.dmp

        Filesize

        304KB

      • memory/3688-62-0x0000000006BF0000-0x0000000006C22000-memory.dmp

        Filesize

        200KB

      • memory/3688-75-0x00000000075E0000-0x0000000007C5A000-memory.dmp

        Filesize

        6.5MB

      • memory/3688-76-0x0000000006F90000-0x0000000006FAA000-memory.dmp

        Filesize

        104KB

      • memory/3688-77-0x0000000007000000-0x000000000700A000-memory.dmp

        Filesize

        40KB

      • memory/3688-78-0x0000000007210000-0x00000000072A6000-memory.dmp

        Filesize

        600KB

      • memory/3688-79-0x0000000007190000-0x00000000071A1000-memory.dmp

        Filesize

        68KB

      • memory/3688-80-0x00000000071C0000-0x00000000071CE000-memory.dmp

        Filesize

        56KB

      • memory/3688-81-0x00000000071D0000-0x00000000071E4000-memory.dmp

        Filesize

        80KB

      • memory/3688-82-0x00000000072D0000-0x00000000072EA000-memory.dmp

        Filesize

        104KB

      • memory/3688-83-0x00000000072B0000-0x00000000072B8000-memory.dmp

        Filesize

        32KB

      • memory/3688-86-0x00000000747C0000-0x0000000074F70000-memory.dmp

        Filesize

        7.7MB

      • memory/3688-73-0x0000000006220000-0x000000000623E000-memory.dmp

        Filesize

        120KB

      • memory/3688-74-0x0000000006C40000-0x0000000006CE3000-memory.dmp

        Filesize

        652KB

      • memory/3688-15-0x0000000002350000-0x0000000002386000-memory.dmp

        Filesize

        216KB

      • memory/3688-59-0x0000000005D00000-0x0000000005D4C000-memory.dmp

        Filesize

        304KB

      • memory/3688-58-0x0000000005C70000-0x0000000005C8E000-memory.dmp

        Filesize

        120KB

      • memory/3688-16-0x00000000747C0000-0x0000000074F70000-memory.dmp

        Filesize

        7.7MB

      • memory/3688-19-0x00000000747C0000-0x0000000074F70000-memory.dmp

        Filesize

        7.7MB

      • memory/3688-18-0x0000000004EE0000-0x0000000005508000-memory.dmp

        Filesize

        6.2MB

      • memory/3688-28-0x0000000004BB0000-0x0000000004BD2000-memory.dmp

        Filesize

        136KB

      • memory/3688-20-0x00000000747C0000-0x0000000074F70000-memory.dmp

        Filesize

        7.7MB

      • memory/3688-30-0x0000000005510000-0x0000000005576000-memory.dmp

        Filesize

        408KB

      • memory/3688-31-0x00000000055F0000-0x0000000005656000-memory.dmp

        Filesize

        408KB

      • memory/3688-36-0x0000000005670000-0x00000000059C4000-memory.dmp

        Filesize

        3.3MB