Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    05/12/2023, 21:14

General

  • Target

    $R4S8Q5B.exe

  • Size

    911KB

  • MD5

    5313272fd87d44ac3b60e976db857d49

  • SHA1

    dbc5bdfa1b78d34fb4b3d3b9074ba449c7f29074

  • SHA256

    9103e2815438759a349705607f3be586c2129551e74cd2a875a04faab7ac43a9

  • SHA512

    271cfe471b50f340d36cb8b23be621883939a9ca85b1eb814bda8d65120eceaea139e159b32d2acf009e58e5df9aa709cebf0ffe0f638c14a577261c12ed3145

  • SSDEEP

    24576:ZzDp2LTL98NShdlTJzZWHyKmgev5/uWO/X4f:Fp2LSNEzTJgrmnUWku

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

167.114.189.33:2404

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-7ZDF66

  • 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.

  • 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 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe
    "C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1748
    • 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\$R4S8Q5B.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2720
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bIURQhWY.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2824
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bIURQhWY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp190C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3016
    • C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe
      "C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe"
      2⤵
        PID:2604
      • C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe
        "C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe"
        2⤵
          PID:2952
        • C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe
          "C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe"
          2⤵
            PID:2600
          • C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe
            "C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe"
            2⤵
              PID:2484
            • C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe
              "C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe"
              2⤵
              • Suspicious use of SetWindowsHookEx
              PID:2744

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\ProgramData\remcos\logs.dat

                  Filesize

                  144B

                  MD5

                  3902dde165b457e661e79d2f6898628e

                  SHA1

                  c5f874d789ce62111d83ab5133b839970df40b6b

                  SHA256

                  ce9f71eea8c92e459b277b2898fbf76cfaaf110a3eb659275430241a12fb0a44

                  SHA512

                  db6154b41f2e31302e46c9887412ffd0eade2ca8568fb849b64754c16bc89392f681925572c4534ea69a83da10236a9a808a5e52effdffcdea53b4088e3fa114

                • C:\Users\Admin\AppData\Local\Temp\tmp190C.tmp

                  Filesize

                  1KB

                  MD5

                  fd13d5ccfc46549ada5ead668d1c8375

                  SHA1

                  7c86cdf7e713cb4c0bbd0aff2a92f265eee374a3

                  SHA256

                  0971ba91e33f935e5af4ee511d39dc982553ac4adfdc7c4d3b5f8198b657a539

                  SHA512

                  d0ed472d1fa0bf9f056f56f5db6c49a5f9896f0bccb7811753892517bff2a113ec88ff8302574840ddf2234e4a381701dc1e4401b3c8c333ff0e80d408d246c6

                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\6YGBM0AC4FS179JVBNXG.temp

                  Filesize

                  7KB

                  MD5

                  925a753af19eb14d0c2918be7772a710

                  SHA1

                  43e041fdf4ba8fbd5dcf0217fb652fcade1fb655

                  SHA256

                  7deceffda0cdfb312a644659d1f203b1c240eb1aa2ee4056b6df86624c264c04

                  SHA512

                  1d47bb243aef01d98ed2b90d554b3641ed3b21a64904ddf3672b8fd294e6c2adc2cd96b5ef1d25861250476b66fccaba548707de3e7053abf066a8119ea415aa

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

                  Filesize

                  7KB

                  MD5

                  925a753af19eb14d0c2918be7772a710

                  SHA1

                  43e041fdf4ba8fbd5dcf0217fb652fcade1fb655

                  SHA256

                  7deceffda0cdfb312a644659d1f203b1c240eb1aa2ee4056b6df86624c264c04

                  SHA512

                  1d47bb243aef01d98ed2b90d554b3641ed3b21a64904ddf3672b8fd294e6c2adc2cd96b5ef1d25861250476b66fccaba548707de3e7053abf066a8119ea415aa

                • memory/1748-35-0x0000000074290000-0x000000007497E000-memory.dmp

                  Filesize

                  6.9MB

                • memory/1748-2-0x0000000004C40000-0x0000000004C80000-memory.dmp

                  Filesize

                  256KB

                • memory/1748-6-0x0000000000930000-0x000000000093A000-memory.dmp

                  Filesize

                  40KB

                • memory/1748-7-0x0000000001E50000-0x0000000001E5C000-memory.dmp

                  Filesize

                  48KB

                • memory/1748-8-0x0000000007F90000-0x0000000008048000-memory.dmp

                  Filesize

                  736KB

                • memory/1748-4-0x0000000074290000-0x000000007497E000-memory.dmp

                  Filesize

                  6.9MB

                • memory/1748-3-0x0000000000910000-0x000000000092A000-memory.dmp

                  Filesize

                  104KB

                • memory/1748-1-0x0000000074290000-0x000000007497E000-memory.dmp

                  Filesize

                  6.9MB

                • memory/1748-0-0x0000000000130000-0x000000000021A000-memory.dmp

                  Filesize

                  936KB

                • memory/1748-5-0x0000000004C40000-0x0000000004C80000-memory.dmp

                  Filesize

                  256KB

                • memory/2720-47-0x0000000002340000-0x0000000002380000-memory.dmp

                  Filesize

                  256KB

                • memory/2720-45-0x000000006DD60000-0x000000006E30B000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2720-44-0x0000000002340000-0x0000000002380000-memory.dmp

                  Filesize

                  256KB

                • memory/2720-42-0x000000006DD60000-0x000000006E30B000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2720-50-0x000000006DD60000-0x000000006E30B000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2744-39-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-25-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-38-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-29-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-34-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-28-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-36-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-32-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-40-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-75-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-27-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-70-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-26-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/2744-69-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-24-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-63-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-62-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-23-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-21-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-56-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2744-57-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/2824-51-0x000000006DD60000-0x000000006E30B000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2824-49-0x00000000027B0000-0x00000000027F0000-memory.dmp

                  Filesize

                  256KB

                • memory/2824-48-0x00000000027B0000-0x00000000027F0000-memory.dmp

                  Filesize

                  256KB

                • memory/2824-46-0x00000000027B0000-0x00000000027F0000-memory.dmp

                  Filesize

                  256KB

                • memory/2824-43-0x000000006DD60000-0x000000006E30B000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2824-41-0x000000006DD60000-0x000000006E30B000-memory.dmp

                  Filesize

                  5.7MB