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Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2025, 04:03

General

  • Target

    8a89b09e5ecd985408b3614a1092803957a6154b2925f43ad85fcb5bae6fb137.exe

  • Size

    1.1MB

  • MD5

    420860ae0fa3744fea3e12d60ec2e5b6

  • SHA1

    2cb2862dc0db52f0e061df82a3a6cb64c3e3d22b

  • SHA256

    8a89b09e5ecd985408b3614a1092803957a6154b2925f43ad85fcb5bae6fb137

  • SHA512

    570545e882e4fc42b76e5ee9886cd5ecd19a1f049436a8617228610d09b89ff321b302d63caedc5676d640e125e53b0d353a85197a755447af8b62626ce20155

  • SSDEEP

    24576:1u6J33O0c+JY5UZ+XC0kGso6FakCsU4yYhK3x9uZ3WYd:Xu0c++OCvkGs9Fak4BYd

Malware Config

Extracted

Family

remcos

Version

2.2.0 Pro

Botnet

RemoteHost

C2

185.217.1.142:3337

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    3

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    true

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-VBI2IL

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • Remcos

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

  • Remcos family
  • Checks computer location settings 2 TTPs 6 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Modifies WinLogon 2 TTPs 3 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • 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 12 IoCs

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

  • Modifies registry class 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8a89b09e5ecd985408b3614a1092803957a6154b2925f43ad85fcb5bae6fb137.exe
    "C:\Users\Admin\AppData\Local\Temp\8a89b09e5ecd985408b3614a1092803957a6154b2925f43ad85fcb5bae6fb137.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3672
    • C:\Users\Admin\AppData\Local\Temp\8a89b09e5ecd985408b3614a1092803957a6154b2925f43ad85fcb5bae6fb137.exe
      "C:\Users\Admin\AppData\Local\Temp\8a89b09e5ecd985408b3614a1092803957a6154b2925f43ad85fcb5bae6fb137.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3796
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1596
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\SysWOW64\schtasks.exe" /create /tn cttunesvr /tr "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe" /sc minute /mo 1 /F
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4844
  • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
    C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
      "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4884
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1004
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\SysWOW64\schtasks.exe" /create /tn cttunesvr /tr "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe" /sc minute /mo 1 /F
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:220
  • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
    C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
      "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1552
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4732
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\SysWOW64\schtasks.exe" /create /tn cttunesvr /tr "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe" /sc minute /mo 1 /F
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4024

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    658B

    MD5

    83f285f53e210eaf466f8800e687d1a0

    SHA1

    8cc4c6b76665f7f2507ce8e0b1c69868c6ae2b71

    SHA256

    b5b3c11abadc4813f22d41ecdeb41c9cfb45ac82e831c6d208f738a182a20f0f

    SHA512

    606366db0c505cfc56885881f1fae4ade3014b40248a969100b4fffa5b2cd1f0207da9e4ee185eedf5852b1fa6222d1a7157a7c45b8d00787c5064c8fa483650

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    564B

    MD5

    e221e7bd7e33aef4a5264f798818142e

    SHA1

    3545dbcc35de80c8f15da0daceab80acd0f1ae22

    SHA256

    f37e43a3504c163fa4a82bacc92ceb8cccd37d1020fbba95cc954f316ce49516

    SHA512

    04775d0fa21526bbbaa2deea13af1d5fab6183ea3a2809073539293da78e20f1cf4b9a4afdeafb1b4e8ce17a5be40f44364808ab73c174c98bce53ad8a1807d8

  • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe

    Filesize

    1.1MB

    MD5

    31cfaf3231a0ff4cfd54feb659c80aff

    SHA1

    b0c7b249012e82af4e79f345c4af2f5562e5205f

    SHA256

    10a9214dd694a5cbfcf45dade0f32da90224549b5c3b890bae04dfb99998faef

    SHA512

    cb1610ec21875cba3cf3858118498963aa8cebfef98236a7848e1e2c72c58a1fb8e5f6c58bac5f39e5bcb7451729b75554c92763e7635f8e57ec211de88535fa

  • memory/1552-32-0x0000000000490000-0x00000000004B0000-memory.dmp

    Filesize

    128KB

  • memory/1552-39-0x0000000000490000-0x00000000004B0000-memory.dmp

    Filesize

    128KB

  • memory/3672-0-0x0000000001070000-0x0000000001071000-memory.dmp

    Filesize

    4KB

  • memory/3796-1-0x00000000000D0000-0x00000000000F0000-memory.dmp

    Filesize

    128KB

  • memory/3796-8-0x00000000000D0000-0x00000000000F0000-memory.dmp

    Filesize

    128KB

  • memory/4884-17-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/4884-24-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB