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Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    25/06/2024, 01:23

General

  • Target

    4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe

  • Size

    927KB

  • MD5

    18416919737cea3ac328aa30560e3be4

  • SHA1

    c446f65f62326e534c1627af9d836e58d28d88d5

  • SHA256

    4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2

  • SHA512

    f53d846d4507541113feb3244acd9c66e1649d29f3c1331c30d8bd7cd5f478482a7313882b5d191e037d1592d695c3d85522272a6d0f816ca8f63e177ce870a8

  • SSDEEP

    24576:W0HPaXjcpYXYrq05AuW7FzuT8udqrPvVmiN0nL:BaTi/xksbdq3Ei0n

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

185.29.9.102:7711

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-4EOZOA

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 19 IoCs
  • Detects executables packed with SmartAssembly 1 IoCs
  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe
    "C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2156
    • 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\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2644
    • C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe
      "C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe"
      2⤵
        PID:2788

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2156-25-0x0000000074480000-0x0000000074B6E000-memory.dmp

      Filesize

      6.9MB

    • memory/2156-1-0x0000000000F00000-0x0000000000FEE000-memory.dmp

      Filesize

      952KB

    • memory/2156-2-0x0000000074480000-0x0000000074B6E000-memory.dmp

      Filesize

      6.9MB

    • memory/2156-3-0x0000000005CE0000-0x0000000005DBA000-memory.dmp

      Filesize

      872KB

    • memory/2156-4-0x00000000004D0000-0x00000000004E2000-memory.dmp

      Filesize

      72KB

    • memory/2156-5-0x0000000000770000-0x0000000000778000-memory.dmp

      Filesize

      32KB

    • memory/2156-6-0x0000000000920000-0x000000000092C000-memory.dmp

      Filesize

      48KB

    • memory/2156-7-0x0000000005E40000-0x0000000005F00000-memory.dmp

      Filesize

      768KB

    • memory/2156-0-0x000000007448E000-0x000000007448F000-memory.dmp

      Filesize

      4KB

    • memory/2788-14-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-30-0x0000000074480000-0x0000000074485000-memory.dmp

      Filesize

      20KB

    • memory/2788-17-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2788-24-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-18-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-16-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-22-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-12-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-10-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-8-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-19-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-29-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-28-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-31-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-32-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-33-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-34-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-35-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-36-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-37-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-38-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-39-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2788-40-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB