Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/08/2024, 10:35

General

  • Target

    81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe

  • Size

    1023KB

  • MD5

    7b3227d251b8705a239fa50ca8070e9c

  • SHA1

    651a7aeec8cbc13f226377ad187d5fc420b22633

  • SHA256

    81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96

  • SHA512

    c6f77c480860002447ff0c252501afc750255f89fad805c39cd036b3f582ff6a2c5e14a5477d2af5014bec84d315e9e66d51a3d329f0bc3cf1608e4a9f85a141

  • SSDEEP

    24576:XHH6h1OnUfbU8QQgV/1hilQgu4FEYTZJr1nzZV8zBVdoGJb84:38Zoj/Vgu4W0pzf8loi

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.243.155:7643

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-C9YEJ8

  • 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 2 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
    "C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4544
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2172
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\IpoUfzz.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3496
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IpoUfzz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCB10.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4328
    • C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
      "C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
      2⤵
        PID:4776
      • C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
        "C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
        2⤵
          PID:1780
        • C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
          "C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
          2⤵
            PID:4392
          • C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
            "C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:1676

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          53ed69071a4376d66462df2c152c01fe

          SHA1

          2d81ebada2f5ca8468dc2adb4ede01a9e06e9cbd

          SHA256

          109adc4fb83dc1d3f2e44a2d292379654016decc0796bcbdbd3cd34e75cd6fa2

          SHA512

          e06af032bb7e370fd7515b0f0f58a121d6208fbb4bee7e94b6000d352258866e18119a06795e37aaffa3b728bf357f419fc553ad0dceee4db898fb8fb99f3418

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

          Filesize

          2KB

          MD5

          968cb9309758126772781b83adb8a28f

          SHA1

          8da30e71accf186b2ba11da1797cf67f8f78b47c

          SHA256

          92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

          SHA512

          4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          18KB

          MD5

          c72bb44adea329da734b94c50d07d3a9

          SHA1

          5ca94e1b6a9307f492c50270df317ceab8533ef7

          SHA256

          40f72f94eb7b18c34382a8b2b87552b3bfa4eea70d653d4864b000395fdda8f7

          SHA512

          295ee3006b1b50a803769e5a65c2210c072991504b0ddf5230d13bdcf0458748afd092890df15fea8d7f7faa3a434823183e1b3b25ed05afd7290a7c06d660f0

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bfw1xt3x.ws2.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmpCB10.tmp

          Filesize

          1KB

          MD5

          89b8b99ec3c9eec243baeab539f7b0ef

          SHA1

          e14c1f855a33d3ec179a0a5b386795506ac6204f

          SHA256

          0f983eeddf4775da86a925e214bf2c6580d3c396be8d2aae40a6de054027653d

          SHA512

          27c5d688b6370412b85b2ceb422796db1b2d15c29c3b51449afae053de8b300895006bb911d89c66a14c2fd50dd7e1cb11779fafb98b0ad1ecb50aa49a7f6bc9

        • memory/1676-56-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-48-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-106-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-105-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-122-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-129-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-57-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-46-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-114-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-51-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-60-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-130-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-121-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-113-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-45-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-52-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1676-58-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2172-98-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/2172-89-0x0000000007CD0000-0x0000000007CDE000-memory.dmp

          Filesize

          56KB

        • memory/2172-23-0x00000000059A0000-0x00000000059C2000-memory.dmp

          Filesize

          136KB

        • memory/2172-86-0x0000000007B10000-0x0000000007B1A000-memory.dmp

          Filesize

          40KB

        • memory/2172-90-0x0000000007CE0000-0x0000000007CF4000-memory.dmp

          Filesize

          80KB

        • memory/2172-19-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/2172-18-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/2172-84-0x00000000080E0000-0x000000000875A000-memory.dmp

          Filesize

          6.5MB

        • memory/2172-73-0x0000000074CE0000-0x0000000074D2C000-memory.dmp

          Filesize

          304KB

        • memory/2172-17-0x0000000005A20000-0x0000000006048000-memory.dmp

          Filesize

          6.2MB

        • memory/2172-16-0x0000000002E40000-0x0000000002E76000-memory.dmp

          Filesize

          216KB

        • memory/2172-91-0x0000000007DE0000-0x0000000007DFA000-memory.dmp

          Filesize

          104KB

        • memory/3496-55-0x0000000006D30000-0x0000000006D7C000-memory.dmp

          Filesize

          304KB

        • memory/3496-92-0x0000000007E00000-0x0000000007E08000-memory.dmp

          Filesize

          32KB

        • memory/3496-61-0x0000000007990000-0x00000000079C2000-memory.dmp

          Filesize

          200KB

        • memory/3496-62-0x0000000074CE0000-0x0000000074D2C000-memory.dmp

          Filesize

          304KB

        • memory/3496-54-0x0000000006790000-0x00000000067AE000-memory.dmp

          Filesize

          120KB

        • memory/3496-72-0x0000000006D80000-0x0000000006D9E000-memory.dmp

          Filesize

          120KB

        • memory/3496-83-0x00000000079D0000-0x0000000007A73000-memory.dmp

          Filesize

          652KB

        • memory/3496-99-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/3496-85-0x0000000007AE0000-0x0000000007AFA000-memory.dmp

          Filesize

          104KB

        • memory/3496-24-0x0000000006130000-0x0000000006196000-memory.dmp

          Filesize

          408KB

        • memory/3496-87-0x0000000007D60000-0x0000000007DF6000-memory.dmp

          Filesize

          600KB

        • memory/3496-88-0x0000000007CE0000-0x0000000007CF1000-memory.dmp

          Filesize

          68KB

        • memory/3496-44-0x0000000006310000-0x0000000006664000-memory.dmp

          Filesize

          3.3MB

        • memory/3496-25-0x00000000061A0000-0x0000000006206000-memory.dmp

          Filesize

          408KB

        • memory/3496-21-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/3496-20-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/4544-0-0x000000007443E000-0x000000007443F000-memory.dmp

          Filesize

          4KB

        • memory/4544-11-0x0000000009060000-0x00000000090FC000-memory.dmp

          Filesize

          624KB

        • memory/4544-53-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/4544-10-0x00000000068A0000-0x0000000006960000-memory.dmp

          Filesize

          768KB

        • memory/4544-9-0x0000000006850000-0x0000000006860000-memory.dmp

          Filesize

          64KB

        • memory/4544-8-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/4544-7-0x000000007443E000-0x000000007443F000-memory.dmp

          Filesize

          4KB

        • memory/4544-6-0x0000000005890000-0x00000000058A2000-memory.dmp

          Filesize

          72KB

        • memory/4544-4-0x00000000055D0000-0x00000000055DA000-memory.dmp

          Filesize

          40KB

        • memory/4544-5-0x0000000074430000-0x0000000074BE0000-memory.dmp

          Filesize

          7.7MB

        • memory/4544-3-0x00000000055F0000-0x0000000005682000-memory.dmp

          Filesize

          584KB

        • memory/4544-2-0x0000000005BA0000-0x0000000006144000-memory.dmp

          Filesize

          5.6MB

        • memory/4544-1-0x0000000000AC0000-0x0000000000BC6000-memory.dmp

          Filesize

          1.0MB