Analysis

  • max time kernel
    118s
  • max time network
    117s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2024 09:54

General

  • Target

    bc43851a4132b4bd01e72b3da4f97460N.exe

  • Size

    4.2MB

  • MD5

    bc43851a4132b4bd01e72b3da4f97460

  • SHA1

    73dde316598b208e1ed2e9d8d342744969090760

  • SHA256

    dc87017ebc4e4ca2d7f65e4d3ede241c3c1bd5908cf5fca24c3faadecce54705

  • SHA512

    b27db04034bbc4616e18ac42c3ae3cdbb3f993a785413c5d5dbe5c61b7e621e657d835ad7a31dbfc930474b114ac6720bf0ddee13bbfef62608dd546a138d091

  • SSDEEP

    24576:ocSRiKAoeMxDa6JtXtSGv7MOfmOh/epNPGi3XxV73LacYLNdK+UwqJ5ji5eB+VyR:

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

horsesnje.net:3343

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-TW2LKP

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 3 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc43851a4132b4bd01e72b3da4f97460N.exe
    "C:\Users\Admin\AppData\Local\Temp\bc43851a4132b4bd01e72b3da4f97460N.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:2840
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c timeout 21 & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3060
      • C:\Windows\SysWOW64\timeout.exe
        timeout 21
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4832
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAYgBjADQAMwA4ADUAMQBhADQAMQAzADIAYgA0AGIAZAAwADEAZQA3ADIAYgAzAGQAYQA0AGYAOQA3ADQANgAwAE4ALgBlAHgAZQA7ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUAByAG8AYwBlAHMAcwAgAGIAYwA0ADMAOAA1ADEAYQA0ADEAMwAyAGIANABiAGQAMAAxAGUANwAyAGIAMwBkAGEANABmADkANwA0ADYAMABOAC4AZQB4AGUAOwA=
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1628
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      2⤵
        PID:4488
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
        2⤵
          PID:444
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:4336

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        bdeea34156bd84000c835d8ff677730d

        SHA1

        f8781b70219f20a68123b9d47689a4b021642519

        SHA256

        a803cfc16c85e5c8c1b4192324cf44d30c6235737f0354583cea2d3b29e4e1ab

        SHA512

        97903c32470aa8c27061c05d25e3d5b8de640e0cb90eccac685f5b404b620f5b0df8884661e39dd52c9687457e838643ed899e91d0cf2faa609bc9cb18599738

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pdczczgy.d5f.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/1628-4920-0x0000000006A60000-0x0000000006A7E000-memory.dmp

        Filesize

        120KB

      • memory/1628-4891-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/1628-4890-0x0000000002F20000-0x0000000002F56000-memory.dmp

        Filesize

        216KB

      • memory/1628-4931-0x0000000007A10000-0x0000000007A24000-memory.dmp

        Filesize

        80KB

      • memory/1628-4930-0x0000000007A00000-0x0000000007A0E000-memory.dmp

        Filesize

        56KB

      • memory/1628-4929-0x00000000079D0000-0x00000000079E1000-memory.dmp

        Filesize

        68KB

      • memory/1628-4928-0x0000000007A50000-0x0000000007AE6000-memory.dmp

        Filesize

        600KB

      • memory/1628-4927-0x0000000007840000-0x000000000784A000-memory.dmp

        Filesize

        40KB

      • memory/1628-4926-0x00000000077D0000-0x00000000077EA000-memory.dmp

        Filesize

        104KB

      • memory/1628-4925-0x0000000007E10000-0x000000000848A000-memory.dmp

        Filesize

        6.5MB

      • memory/1628-4924-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/1628-4922-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/1628-4932-0x0000000007B10000-0x0000000007B2A000-memory.dmp

        Filesize

        104KB

      • memory/1628-4933-0x0000000007AF0000-0x0000000007AF8000-memory.dmp

        Filesize

        32KB

      • memory/1628-4896-0x0000000005C20000-0x0000000005C86000-memory.dmp

        Filesize

        408KB

      • memory/1628-4909-0x0000000007440000-0x0000000007472000-memory.dmp

        Filesize

        200KB

      • memory/1628-4910-0x000000006FF20000-0x000000006FF6C000-memory.dmp

        Filesize

        304KB

      • memory/1628-4908-0x00000000064B0000-0x00000000064FC000-memory.dmp

        Filesize

        304KB

      • memory/1628-4907-0x0000000006480000-0x000000000649E000-memory.dmp

        Filesize

        120KB

      • memory/1628-4906-0x0000000005C90000-0x0000000005FE4000-memory.dmp

        Filesize

        3.3MB

      • memory/1628-4936-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/1628-4921-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/1628-4895-0x0000000005580000-0x00000000055E6000-memory.dmp

        Filesize

        408KB

      • memory/1628-4894-0x00000000054E0000-0x0000000005502000-memory.dmp

        Filesize

        136KB

      • memory/1628-4893-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/1628-4892-0x00000000055F0000-0x0000000005C18000-memory.dmp

        Filesize

        6.2MB

      • memory/1628-4923-0x0000000007490000-0x0000000007533000-memory.dmp

        Filesize

        652KB

      • memory/2840-59-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-0-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

        Filesize

        4KB

      • memory/2840-31-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-27-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-25-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-23-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-29-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-17-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-21-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-11-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-8-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-4886-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/2840-4887-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/2840-4888-0x00000000057B0000-0x000000000584A000-memory.dmp

        Filesize

        616KB

      • memory/2840-4889-0x00000000050C0000-0x000000000510C000-memory.dmp

        Filesize

        304KB

      • memory/2840-55-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-35-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-37-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-39-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-41-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-43-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-45-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-47-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-51-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-57-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-53-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-61-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-63-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-65-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-69-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-67-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-49-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-33-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-19-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-15-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-9-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-13-0x0000000005C90000-0x0000000005F01000-memory.dmp

        Filesize

        2.4MB

      • memory/2840-7-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/2840-6-0x0000000005C90000-0x0000000005F06000-memory.dmp

        Filesize

        2.5MB

      • memory/2840-5-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/2840-4-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

        Filesize

        4KB

      • memory/2840-3-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/2840-2-0x0000000006270000-0x0000000006482000-memory.dmp

        Filesize

        2.1MB

      • memory/2840-4937-0x0000000007BF0000-0x0000000008194000-memory.dmp

        Filesize

        5.6MB

      • memory/2840-4938-0x0000000006500000-0x0000000006554000-memory.dmp

        Filesize

        336KB

      • memory/2840-1-0x0000000000070000-0x00000000004A0000-memory.dmp

        Filesize

        4.2MB

      • memory/2840-4950-0x0000000074DC0000-0x0000000075570000-memory.dmp

        Filesize

        7.7MB

      • memory/4336-4963-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4336-4949-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB