Analysis

  • max time kernel
    132s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    11-05-2024 01:36

General

  • Target

    869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe

  • Size

    604KB

  • MD5

    ffc880a6448b251eee7f03809bf0a1bf

  • SHA1

    09e75e38d588b0e99a3f6f85b2dc4a3eebe4ee08

  • SHA256

    869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d

  • SHA512

    21dbc92495d2afa76e2e0b7243586ce70889e6cf1240222f1c75aab217df9a0287f9b9b5f3c754011ecfec411c2677c3fd091bcb2b620205c2c97db564b7b180

  • SSDEEP

    12288:O+DbgZB778Qed59T3C6g9XltKMYicJgTx5bx4OVEIHDe2RZQioKEAmD:3gZBS9TbgoMpcJ+Tbe7Ye2nOK

Score
10/10

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

NHS

C2

185.189.112.19:30311

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    nhs

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_lejjhxgdnt

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • detects Windows exceutables potentially bypassing UAC using eventvwr.exe 5 IoCs
  • 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.

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe
    "C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3056
    • 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\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2284
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RqlVhjJtK.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2796
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RqlVhjJtK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8FE1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2816
    • C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe
      "C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2668

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8FE1.tmp

    Filesize

    1KB

    MD5

    23fc2bcbdbc1f5cee8d1a4c63d3d9b4a

    SHA1

    9f2a7d44b5f06a949af0b3a447e5837c70aea61b

    SHA256

    69caa0815e11f395b6009f1f133346d7ac75131343befd69a16afbc41f7ebe15

    SHA512

    3ef742caab266c5788b93887d530bd6cdd6fe0f9023081b08a1aa610d0c0125adc75315352b967d6fb78271df8562447ce9301de7f85143cb14ecb25b2c3af25

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    b8f07ef835593dc0253ef70917b51054

    SHA1

    6cbeef29cb2b001c0c327d90543efcc87b3ee2bb

    SHA256

    d1043274b9713f2fca490d5f7408e0a10ed74f7a52fdd14e8eccb7af76551233

    SHA512

    8d084dfe4634ad6ec688fcfd5be8775b955cb3b91efdfe8f1566a978ede87f5e6b5827f3f81dc803d9c984d509d75f8ff199a246b14afd51e6ffe7d3483023e1

  • memory/2668-29-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2668-22-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2668-34-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2668-33-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2668-25-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2668-27-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2668-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2668-32-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2668-23-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/3056-7-0x000000007441E000-0x000000007441F000-memory.dmp

    Filesize

    4KB

  • memory/3056-1-0x0000000000DD0000-0x0000000000E6C000-memory.dmp

    Filesize

    624KB

  • memory/3056-2-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB

  • memory/3056-8-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB

  • memory/3056-0-0x000000007441E000-0x000000007441F000-memory.dmp

    Filesize

    4KB

  • memory/3056-3-0x00000000004D0000-0x00000000004E8000-memory.dmp

    Filesize

    96KB

  • memory/3056-6-0x00000000047D0000-0x0000000004830000-memory.dmp

    Filesize

    384KB

  • memory/3056-5-0x0000000000500000-0x0000000000516000-memory.dmp

    Filesize

    88KB

  • memory/3056-4-0x00000000004F0000-0x00000000004FE000-memory.dmp

    Filesize

    56KB

  • memory/3056-37-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB