Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2024 07:32

General

  • Target

    PaymentTransferRequestForm.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\PaymentTransferRequestForm.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\PaymentTransferRequestForm.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:2684
    • 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\PaymentTransferRequestForm.bat.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2972
    • 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:2808
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKgKaogJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA4D.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2816
    • C:\Users\Admin\AppData\Local\Temp\PaymentTransferRequestForm.bat.exe
      "C:\Users\Admin\AppData\Local\Temp\PaymentTransferRequestForm.bat.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2652
      • 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:1608
        • 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:536
          • 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:2940
            • 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:1280
            • 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:2560
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKgKaogJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp72B0.tmp"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:2480
            • 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:1800

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\tmpA4D.tmp

    Filesize

    1KB

    MD5

    416453ad088ce861d0c1be11604eaffb

    SHA1

    15ab130f07135342295aed87b279a53b13690889

    SHA256

    10b560c9c272a31fa31b387bb88f7a0b1b656db3927d1730cde370c9893c6db6

    SHA512

    cf2f6f178b4c5fa3847ce42f0c020e5123749909302330244a60a85e6f51d4e0d7d445482a2bd332c06a6cd0b252722f0b0e93fe72f9b43f642b1e0e8d4af7aa

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

    Filesize

    7KB

    MD5

    7bcb78d120aaee4a449cc6e89d16ef39

    SHA1

    7ea1b88e24d7bd51ccab6c61bdedc6a25a46f95c

    SHA256

    a6b6cab038147b649ce56759a9e4adad4acd880f4b7ba391aacb6e384c537d15

    SHA512

    2cbb7df4e51f4c6ec5502941d526a7109044530f5e475dd76a22d551f3c12179a42a8f3b4605c41c831e8f97f540f410b2e65e43025890d60332c6668e2e5c9a

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

    Filesize

    7KB

    MD5

    c5c821782f44a495808f87387f9e56ae

    SHA1

    d10bb9d036134ff9f5ac104fe29d10827b4f6350

    SHA256

    78d57d9870c7b1c7ade3ef6e09b38896b84a7640c2ef4168102eef253fd34419

    SHA512

    60034ff6695e275eca95b57bc6a5a9bb142dbee7204a134a47484205ccfe6e1ba8f1de9f06af66bb01d554abdd632322a509ec3025fa67d852a71b2e2428d9a7

  • \??\PIPE\srvsvc

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • memory/1800-91-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-89-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-90-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-86-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-85-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-84-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-81-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-83-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-78-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1800-92-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-82-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-94-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1800-93-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2652-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-19-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-37-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-27-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-29-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-31-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-34-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2652-23-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2684-42-0x00000000749E0000-0x00000000750CE000-memory.dmp

    Filesize

    6.9MB

  • memory/2684-0-0x00000000749EE000-0x00000000749EF000-memory.dmp

    Filesize

    4KB

  • memory/2684-6-0x0000000004FD0000-0x0000000005090000-memory.dmp

    Filesize

    768KB

  • memory/2684-5-0x00000000749E0000-0x00000000750CE000-memory.dmp

    Filesize

    6.9MB

  • memory/2684-4-0x00000000749EE000-0x00000000749EF000-memory.dmp

    Filesize

    4KB

  • memory/2684-3-0x0000000000430000-0x0000000000442000-memory.dmp

    Filesize

    72KB

  • memory/2684-2-0x00000000749E0000-0x00000000750CE000-memory.dmp

    Filesize

    6.9MB

  • memory/2684-1-0x0000000000CD0000-0x0000000000E02000-memory.dmp

    Filesize

    1.2MB

  • memory/2940-48-0x0000000000390000-0x00000000003A2000-memory.dmp

    Filesize

    72KB

  • memory/2940-47-0x0000000000980000-0x0000000000AB2000-memory.dmp

    Filesize

    1.2MB