Analysis

  • max time kernel
    153s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-05-2024 04:53

General

  • Target

    28615260996f2ee3bf717734f6714014_JaffaCakes118.exe

  • Size

    344KB

  • MD5

    28615260996f2ee3bf717734f6714014

  • SHA1

    4d974c30ad0b91bbb81a3f4684d4c8216b602608

  • SHA256

    b312190adff333d7172e87d01dbb298ad7dbac987a6ad489fca561366161ee98

  • SHA512

    af93cc53e0b2299c63247e44c9ad25d065f23a7409657d40e2326f578c10022f58bc2344574c85caad1bfdf3fce65ac18742726b1ed0983a91898a2d30ee75af

  • SSDEEP

    3072:9iyYjwU1EjxKqX3Q+V1r851fKI9kG5yl+9nyiPPkD2Io9McfOOgPSCzHi8eklllL:jYrqXn1r8fK+/k+9nvki1Bj4

Malware Config

Extracted

Family

remcos

Version

2.1.0 Pro

Botnet

Rem5

C2

camglass.sytes.net:2445

camvips.ddns.net:2445

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    15

  • connect_interval

    5

  • copy_file

    Rem5.exe

  • copy_folder

    Rem5

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    Rem5

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    WpouHTy-7HE1NU

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    LKJhgtYGS

  • 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 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4452
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:3104
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4940
        • C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe
          C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4308
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\SysWOW64\svchost.exe
            5⤵
            • Drops file in Windows directory
            • Suspicious use of SetWindowsHookEx
            PID:540
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4160 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2400

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      410B

      MD5

      4b309959125fb954b68968bad5bed9ac

      SHA1

      b2b805fa81f1b82fa07b718031c9a89046731146

      SHA256

      109742373d7cca30b46ef4b05d9b86694e2a54f862afd891e7bba50cf0f18830

      SHA512

      9d90d6f5085ac7103aee6679272b677589afe3a50835152f3c1f799080e38b975f3c246d6649926a80a7ee3bbcabf755d6a20cf768083714a359bc9a5af9cf92

    • C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe

      Filesize

      344KB

      MD5

      28615260996f2ee3bf717734f6714014

      SHA1

      4d974c30ad0b91bbb81a3f4684d4c8216b602608

      SHA256

      b312190adff333d7172e87d01dbb298ad7dbac987a6ad489fca561366161ee98

      SHA512

      af93cc53e0b2299c63247e44c9ad25d065f23a7409657d40e2326f578c10022f58bc2344574c85caad1bfdf3fce65ac18742726b1ed0983a91898a2d30ee75af

    • C:\Users\Admin\AppData\Roaming\Rem5\logs.dat

      Filesize

      79B

      MD5

      e73f523f12c59e8f942d3bab6d2856f1

      SHA1

      3b6da83a2b6137714778ae13ee0d5cb68af1bdb1

      SHA256

      cf8af72752d55e70fbf56ab62915710fb0f1f3fdc75a163022cedf99cc9ecc59

      SHA512

      2154d2b502440da69a5688df3f7473371045caa3f1f0fc078a68ae7edeefab0fdd83c52a5f06f83dfb73f6e146fab9ffc37a1c1794623c24d6b319d19fdc0bc8

    • C:\Windows\win.ini

      Filesize

      120B

      MD5

      fe0c4d84684551dc6429860c8e769578

      SHA1

      f181d3731695af4873cb9ccd41098b0bd7e7a98d

      SHA256

      e5aeb321c075f20134653784a42065464384b29690205bb2333446ade115f690

      SHA512

      74781dbc7d17392e43679b3f138885fa38bd040d9abbe676994df785877011d7dc75a9066f00c06d5020cdae461b76fa562888484fc53ef79414c54e035971c2

    • memory/540-44-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/540-38-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/540-37-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4308-32-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4308-51-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4308-29-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4308-53-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4308-52-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4308-34-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4308-36-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4308-35-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4452-3-0x0000000000630000-0x0000000000730000-memory.dmp

      Filesize

      1024KB

    • memory/4452-9-0x0000000000401000-0x0000000000402000-memory.dmp

      Filesize

      4KB

    • memory/4452-7-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4452-6-0x0000000077751000-0x0000000077871000-memory.dmp

      Filesize

      1.1MB

    • memory/4452-13-0x0000000000630000-0x0000000000730000-memory.dmp

      Filesize

      1024KB

    • memory/4452-16-0x0000000077751000-0x0000000077871000-memory.dmp

      Filesize

      1.1MB

    • memory/4452-15-0x0000000002BF0000-0x0000000002CF0000-memory.dmp

      Filesize

      1024KB

    • memory/4452-5-0x0000000002BF0000-0x0000000002CF0000-memory.dmp

      Filesize

      1024KB