Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-01-2025 08:58

General

  • Target

    test1.exe

  • Size

    792KB

  • MD5

    f0882b09aebf9b37f740d9a42e3fa4bb

  • SHA1

    e1068da52875b055ec58d2c2b8110932e863f981

  • SHA256

    2a9b0ed40f1f0bc0c13ff35d304689e9cadd633781cbcad1c2d2b92ced3f1c85

  • SHA512

    a6788652b4123a3618ff79d379cc291623e9c3126ba18831fc7c574b5ac8b52309ca6b6d5497b645e5de0fa7e2bdcbd4410cc29a7a9ce87d86f8da50fbe6fadd

  • SSDEEP

    3072:675U501c5GWp1icKAArDZz4N9GhbkrNEk1yjBwpewrFT13tc1RnmImKZIy9lPx6x:1pp0yN90QEDmwmT1dctm+rjAiEDZ

Malware Config

Extracted

Family

remcos

Version

2.3.0 Pro

Botnet

RemoteHost

C2

toptoptop1.online:2404

toptoptop2.online:2404

toptoptop3.online:2404

toptoptop1.site:2404

toptoptop2.site:2404

toptoptop3.site:2404

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

    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

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-RKAPUX

  • 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

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

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

  • Remcos family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\test1.exe
    "C:\Users\Admin\AppData\Local\Temp\test1.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ADDSTA~2.EXE
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ADDSTA~2.EXE
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1364
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ADDSTA~2.EXE
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ADDSTA~2.EXE
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3708
        • C:\Users\Admin\AppData\Local\Temp\FYRINGSSEDDELEN.exe
          "C:\Users\Admin\AppData\Local\Temp\FYRINGSSEDDELEN.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:1016
          • C:\Users\Admin\AppData\Local\Temp\FYRINGSSEDDELEN.exe
            "C:\Users\Admin\AppData\Local\Temp\FYRINGSSEDDELEN.exe"
            5⤵
            • Executes dropped EXE
            • Drops file in Windows directory
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:3768
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x118,0x11c,0x120,0xf4,0x124,0x7ffffbafcc40,0x7ffffbafcc4c,0x7ffffbafcc58
      2⤵
        PID:4892
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1916,i,2109337798889011037,3672271703726386510,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=1912 /prefetch:2
        2⤵
          PID:1520
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=1980,i,2109337798889011037,3672271703726386510,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=2148 /prefetch:3
          2⤵
            PID:656
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=2268,i,2109337798889011037,3672271703726386510,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=2280 /prefetch:8
            2⤵
              PID:4980
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3156,i,2109337798889011037,3672271703726386510,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=3176 /prefetch:1
              2⤵
                PID:2472
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3208,i,2109337798889011037,3672271703726386510,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=3200 /prefetch:1
                2⤵
                  PID:516
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4580,i,2109337798889011037,3672271703726386510,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=4548 /prefetch:1
                  2⤵
                    PID:2184
                • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
                  "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
                  1⤵
                    PID:368

                  Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State

                    Filesize

                    1KB

                    MD5

                    8bc8ec59f6956d4d59909f5ab05b9d99

                    SHA1

                    92ad9b2c80decd839d468f99f65d8c6887aee1a7

                    SHA256

                    419635f6746ed71ec173b6d7eaddecfa0e3f7d639c06b814ed8d5b7314eca657

                    SHA512

                    7c610b16c22764134ba61bb2c836be280f82ee4686d4fc5fe644671575ed22e1fc5dac2ad1a357e3e7ee83c75f151049cff20de3ce9d8eb2a50f679bec69470f

                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                    Filesize

                    2B

                    MD5

                    d751713988987e9331980363e24189ce

                    SHA1

                    97d170e1550eee4afc0af065b78cda302a97674c

                    SHA256

                    4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                    SHA512

                    b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                    Filesize

                    356B

                    MD5

                    80621cd7f07adae258c824b8ac50ca8f

                    SHA1

                    5d68200adcc6dc3ea6daaf27564ee59d8e86257d

                    SHA256

                    7b0f90eba41ed7e6b3ee12a6a0a0167557c62795e388d65055f5862c6c25ff17

                    SHA512

                    83cf791db46a231da4ad612b3fbe9daf6e8b649bff10c470bcb02300aa84f5a5eed5984c138f71cfd9b7381acbe0534350b446d65973dbbffb6b16ecd6cef38f

                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                    Filesize

                    8KB

                    MD5

                    6278c138dc955a88832adaa48b7a2b18

                    SHA1

                    243a91cd26beca97ad410b8a34678048c818ad03

                    SHA256

                    95d25e548d33b65bfd4bdc761be0069bba353834d94d0facc2e5275370c7a0b0

                    SHA512

                    bd83bbf33660916622199192a7e3b6986696b61c5e3e7f4a00ce19adb76d41498fb44617d9e1239b007bf3b3f34cec51845f871a4066e937d36d4a19a7382116

                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                    Filesize

                    116KB

                    MD5

                    47ec964047132d2c4f3c87fb06cdd324

                    SHA1

                    9fc9f9b30377900bb585a9b0d8e266b9698eae58

                    SHA256

                    d12b77f772bc21306aa6d84f9e4e184ec83d7eb54d4d67eb31d45f00c47b75dc

                    SHA512

                    a1310a8e1c287e2d4ee02f64e4dcac21d1eea5def07a8eca1b1117b8daf0c6696e93d7789377cb613af1ec6449fc2ebbdcf2a6fab78d554e65e453db378e0d72

                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\ShaderCache\data_1

                    Filesize

                    264KB

                    MD5

                    f50f89a0a91564d0b8a211f8921aa7de

                    SHA1

                    112403a17dd69d5b9018b8cede023cb3b54eab7d

                    SHA256

                    b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                    SHA512

                    bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                  • C:\Windows\win.ini

                    Filesize

                    123B

                    MD5

                    6bf517432f65eb7f0d18d574bf14124c

                    SHA1

                    5b9f37c1dd1318ebbec3bd2f07c109eb9d22c727

                    SHA256

                    6e2b70dfccabf3cc651545676a3a566c9cfae03f15f772886646abce1da35b46

                    SHA512

                    7b0cb8c20034585ec8bf4b45eda5eda5993a56e24931a7426dc5a9f081ec1f82545f3e26a48a4df885c8691fc6e8026d0808aebe3cc3358ba85ddca08ac4cb06

                  • memory/1364-114-0x0000000076EF1000-0x0000000077011000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/1364-118-0x0000000076EF1000-0x0000000077011000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/3768-143-0x00000000020E0000-0x00000000020E7000-memory.dmp

                    Filesize

                    28KB

                  • memory/3768-142-0x0000000000400000-0x0000000000443000-memory.dmp

                    Filesize

                    268KB