Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 02:44

General

  • Target
    985dda76570c9efdd692eca4a7bef55c99cbcac5ae7683360c115ea5529ebaa5.bat
  • Size 3.9MB
  • Sample240410-c8nlnscb75
  • SHA256 985dda76570c9efdd692eca4a7bef55c99cbcac5ae7683360c115ea5529ebaa5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 192.3.216.142:7232

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-PGR5EA

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

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

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 48 IoCs
  • ModiLoader Second Stage 1 IoCs
  • Executes dropped EXE 9 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Script User-Agent 2 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\985dda76570c9efdd692eca4a7bef55c99cbcac5ae7683360c115ea5529ebaa5.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4820
    • C:\Windows\System32\extrac32.exe
      C:\\Windows\\System32\\extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
      2⤵
        PID:2044
      • C:\Users\Public\alpha.exe
        C:\\Users\\Public\\alpha /c extrac32.exe /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:3428
        • C:\Windows\system32\extrac32.exe
          extrac32.exe /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
          3⤵
            PID:3448
        • C:\Users\Public\alpha.exe
          C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\985dda76570c9efdd692eca4a7bef55c99cbcac5ae7683360c115ea5529ebaa5.bat" "C:\\Users\\Public\\Yano.txt" 9
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:900
          • C:\Users\Public\kn.exe
            C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\985dda76570c9efdd692eca4a7bef55c99cbcac5ae7683360c115ea5529ebaa5.bat" "C:\\Users\\Public\\Yano.txt" 9
            3⤵
            • Executes dropped EXE
            PID:1636
        • C:\Users\Public\alpha.exe
          C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\Yano.txt" "C:\\Users\\Public\\Libraries\\Yano.com" 12
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:2392
          • C:\Users\Public\kn.exe
            C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\Yano.txt" "C:\\Users\\Public\\Libraries\\Yano.com" 12
            3⤵
            • Executes dropped EXE
            PID:4600
        • C:\Users\Public\Libraries\Yano.com
          C:\Users\Public\Libraries\Yano.com
          2⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2448
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\LyjjreuvO.bat" "
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:3236
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
              4⤵
                PID:2596
              • C:\Windows\SysWOW64\xcopy.exe
                xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
                4⤵
                • Enumerates system info in registry
                PID:5072
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                4⤵
                  PID:644
                • C:\Windows\SysWOW64\xcopy.exe
                  xcopy "Aaa.bat" "C:\Windows \System32\" /K /D /H /Y
                  4⤵
                  • Enumerates system info in registry
                  PID:396
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                  4⤵
                    PID:3996
                  • C:\Windows\SysWOW64\xcopy.exe
                    xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
                    4⤵
                    • Enumerates system info in registry
                    PID:1068
                  • C:\Windows \System32\easinvoker.exe
                    "C:\Windows \System32\easinvoker.exe"
                    4⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Suspicious use of WriteProcessMemory
                    PID:3696
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\windows \system32\aaa.bat""
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1428
                      • C:\Windows\system32\cmd.exe
                        cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                        6⤵
                        • Suspicious use of WriteProcessMemory
                        PID:4248
                        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                          powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                          7⤵
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          PID:728
                • C:\Windows\SysWOW64\extrac32.exe
                  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Public\Libraries\Yano.com C:\\Users\\Public\\Libraries\\Lyjjreuv.PIF
                  3⤵
                    PID:4768
                • C:\Users\Public\alpha.exe
                  C:\\Users\\Public\\alpha /c del "C:\Users\Public\Yano.txt" / A / F / Q / S
                  2⤵
                  • Executes dropped EXE
                  PID:2304
                • C:\Users\Public\alpha.exe
                  C:\\Users\\Public\\alpha /c del "C:\Users\Public\kn.exe" / A / F / Q / S
                  2⤵
                  • Executes dropped EXE
                  PID:3976

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    logs.dat

                    • Path C:\ProgramData\remcos\logs.dat
                    • Size 182B
                    • SHA256 8b62b089c67704a30333dffd2282d727bfb3f1f107eec7e9d577d03f5146c7b9
                    • MD5 SHA1 SHA512

                    __PSScriptPolicyTest_1k0pjhxk.geu.ps1

                    • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1k0pjhxk.geu.ps1
                    • Size 60B
                    • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                    • MD5 SHA1 SHA512

                    LyjjreuvO.bat

                    • Path C:\Users\Public\Libraries\LyjjreuvO.bat
                    • Size 29KB
                    • SHA256 abac4a967800f5da708572ec42441ec373cd52459a83a8a382d6b8579482789d
                    • MD5 SHA1 SHA512 SSDEEP

                    Yano.com

                    • Path C:\Users\Public\Libraries\Yano.com
                    • Size 1.4MB
                    • SHA256 9537982a9501f4dd4474d080c147a5afa3f125f6617811486c6341cdba1aa2da
                    • MD5 SHA1 SHA512 SSDEEP

                    aaa.bat

                    • Path C:\Users\Public\Libraries\aaa.bat
                    • Size 18KB
                    • SHA256 cd05094e213643d624996b98e14aa5f7a2363f63530fe0c99523f6948effe756
                    • MD5 SHA1 SHA512 SSDEEP

                    easinvoker.exe

                    • Path C:\Users\Public\Libraries\easinvoker.exe
                    • Size 128KB
                    • SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
                    • MD5 SHA1 SHA512 SSDEEP

                    netutils.dll

                    • Path C:\Users\Public\Libraries\netutils.dll
                    • Size 112KB
                    • SHA256 7c6b2128913876dcb70603f2c00618d2e9057f381766565baf2a37100b85f1fd
                    • MD5 SHA1 SHA512 SSDEEP

                    Yano.txt

                    • Path C:\Users\Public\Yano.txt
                    • Size 2.8MB
                    • SHA256 f7cdbc8097cfc5ad70a9d5337b4bf699b9980b64d73d17cdd419ca8bb560f8ac
                    • MD5 SHA1 SHA512 SSDEEP

                    alpha.exe

                    • Path C:\Users\Public\alpha.exe
                    • Size 283KB
                    • SHA256 b99d61d874728edc0918ca0eb10eab93d381e7367e377406e65963366c874450
                    • MD5 SHA1 SHA512 SSDEEP

                    kn.exe

                    • Path C:\Users\Public\kn.exe
                    • Size 1.6MB
                    • SHA256 8de7b4eb1301d6cbe4ea2c8d13b83280453eb64e3b3c80756bbd1560d65ca4d2
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/728-69-0x00007FFA7BF00000-0x00007FFA7C9C1000-memory.dmp

                    memory/728-66-0x00000188A23C0000-0x00000188A23D0000-memory.dmp

                    memory/728-65-0x00000188A23C0000-0x00000188A23D0000-memory.dmp

                    memory/728-64-0x00007FFA7BF00000-0x00007FFA7C9C1000-memory.dmp

                    memory/728-63-0x00000188A2390000-0x00000188A23B2000-memory.dmp

                    memory/2448-96-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-107-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-32-0x0000000000400000-0x0000000000573000-memory.dmp

                    memory/2448-30-0x00000000040F0000-0x00000000050F0000-memory.dmp

                    memory/2448-74-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-75-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-77-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-78-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-79-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-81-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-82-0x00000000024B0000-0x00000000024B1000-memory.dmp

                    memory/2448-83-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-85-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-86-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-88-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-90-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-92-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-93-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-94-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-29-0x00000000040F0000-0x00000000050F0000-memory.dmp

                    memory/2448-98-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-99-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-28-0x00000000024B0000-0x00000000024B1000-memory.dmp

                    memory/2448-101-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-102-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-104-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-105-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-151-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-109-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-110-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-111-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-114-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-116-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-117-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-118-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-120-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-122-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-124-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-125-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-127-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-128-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-131-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-133-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-135-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-136-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-138-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-139-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-142-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-143-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-145-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-146-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-147-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/2448-149-0x0000000016450000-0x0000000017450000-memory.dmp

                    memory/3696-52-0x00000000613C0000-0x00000000613E3000-memory.dmp