Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2024 07:22

General

  • Target

    Payment Transfer Request Form.bat.exe

  • Size

    1.2MB

  • MD5

    fc5a80adf45d78ffa834283d0a78f9f6

  • SHA1

    6865dec6f71546ea01420295b7175038c3a81ec4

  • SHA256

    e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c

  • SHA512

    27636cd0d31e3b1ff384869f1f2be6c23d7f02ecd70027c5d689de0893835d070218596a941472481d637cc6253ed3f2405991a6af4772596cc88f909a7dd7cb

  • SSDEEP

    24576:RYdgfvzAKzxWCC9vSA6GRdsttHVqowvVpBdlvlOUa:rzAcWFt96ydyQow5dldna

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

212.162.149.226:9285

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    AppUpdate

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-VCJ8ZS

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    AppUpdate

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 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.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2676
    • 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\Payment Transfer Request Form.bat.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2608
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iKgKaogJ.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2740
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKgKaogJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4AE5.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2580
    • C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment Transfer Request Form.bat.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2912
      • 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
        • Suspicious use of WriteProcessMemory
        PID:2996
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\AppUpdate\remcos.exe"
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2824
          • C:\ProgramData\AppUpdate\remcos.exe
            C:\ProgramData\AppUpdate\remcos.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:328
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2132
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iKgKaogJ.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2552
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKgKaogJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB6C1.tmp"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:2136
            • C:\ProgramData\AppUpdate\remcos.exe
              "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              PID:2448

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\AppUpdate\remcos.exe

    Filesize

    1.2MB

    MD5

    fc5a80adf45d78ffa834283d0a78f9f6

    SHA1

    6865dec6f71546ea01420295b7175038c3a81ec4

    SHA256

    e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c

    SHA512

    27636cd0d31e3b1ff384869f1f2be6c23d7f02ecd70027c5d689de0893835d070218596a941472481d637cc6253ed3f2405991a6af4772596cc88f909a7dd7cb

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

    Filesize

    392B

    MD5

    046708368578d720d91fb9ceecec742e

    SHA1

    1dc732f67f48a1d5694f4cf14a8d279dbd1d6ee6

    SHA256

    04f4edc28e97a16f93cf7acac864aba17cc467282550ae61baac719262be6f5e

    SHA512

    9106f645ee74c9e061fcb396a00d706512d41054a356125f26a10d42390d8f0d3ea3dd785393bf5de358b62464ec3c0f7d2e27411e87bb408581f820c427e7f0

  • C:\Users\Admin\AppData\Local\Temp\tmp4AE5.tmp

    Filesize

    1KB

    MD5

    9266495575bbdfdee2cbae074fdcb810

    SHA1

    799a493dc7164c9aaaca0a59cfe4d7d81e76e843

    SHA256

    aece6d8cc315c0fe19abff064c50e8b1df67fbf01c080997019a841f214bc5ed

    SHA512

    8e918713a765c73ca05dea8c66277f8a0352c168f97f1cc94b7cd1d3ac6a6668ca99dba2906de3a5f80acad2809e8d7ad11d69daa7fdc0ffe5561fa4fd6c83de

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

    Filesize

    7KB

    MD5

    b90de0c65e78841070d5762a368da5b5

    SHA1

    d181c83b3e2dd906d7849a9363e40a52e5cb6493

    SHA256

    9e9c036894ed966983b49721d4087e7aedf8101e8f657105512b0475732f1e88

    SHA512

    46fd3ebcb093bf63fa0a7c48b4b6aa3656f5e934e657d438b49b2de7b6b5150fb90c7efe90ef622e39344f40f9c85126647103af74bd0998f29ef52a35abd2ec

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

    Filesize

    7KB

    MD5

    1e7e983aa0fa2158edfd9376cd55d70f

    SHA1

    5cf9f54bcbeac571f8b5daacf7a5b2210785d441

    SHA256

    1e3d8557680fa9c8d6af0ecc19e3cb4aead3968810ee6ebf331eb65ac1d6a43b

    SHA512

    541a06101c37765a67b892e0d7f9de384611258ec18ae167eb6bba7ee9ecc9672ad0ecb0eacb4eecb9a817c3130796f999d0f3d4fa195d7d06b943c39975e1d1

  • \??\PIPE\srvsvc

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • memory/328-46-0x0000000000950000-0x0000000000A82000-memory.dmp

    Filesize

    1.2MB

  • memory/2448-89-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-84-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-80-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-92-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-90-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-79-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-88-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-87-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-81-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-91-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-83-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-82-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2448-76-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2676-5-0x0000000005570000-0x0000000005630000-memory.dmp

    Filesize

    768KB

  • memory/2676-4-0x0000000073F20000-0x000000007460E000-memory.dmp

    Filesize

    6.9MB

  • memory/2676-3-0x0000000000480000-0x0000000000492000-memory.dmp

    Filesize

    72KB

  • memory/2676-2-0x0000000073F20000-0x000000007460E000-memory.dmp

    Filesize

    6.9MB

  • memory/2676-1-0x0000000001080000-0x00000000011B2000-memory.dmp

    Filesize

    1.2MB

  • memory/2676-41-0x0000000073F20000-0x000000007460E000-memory.dmp

    Filesize

    6.9MB

  • memory/2676-0-0x0000000073F2E000-0x0000000073F2F000-memory.dmp

    Filesize

    4KB

  • memory/2912-35-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2912-20-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-22-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-24-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-26-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-28-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-30-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-32-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2912-18-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB