Analysis

  • max time kernel
    98s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/01/2024, 18:07

General

  • Target
    TSPPaymentTT.bat.exe
  • Size 2.0MB
  • Sample240130-wqafwabham
  • SHA256 cd575d9fc9f59f2f82247346131fa35a6e28354f33640c3379a14f4a76c023f8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 65.21.212.85:2404

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

    mrptr

  • mouse_option

    false

  • mutex

    Rmc-46XRTC

  • 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.

  • ModiLoader Second Stage 1 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Launches sc.exe 2 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Program crash 1 IoCs
  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Script User-Agent 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TSPPaymentTT.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\TSPPaymentTT.bat.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:116
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\WcccssaiO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2264
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c mkdir "\\?\C:\Windows "
        3⤵
          PID:3324
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
          3⤵
            PID:1524
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
            3⤵
            • Enumerates system info in registry
            PID:5088
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
            3⤵
              PID:2528
            • C:\Windows\SysWOW64\xcopy.exe
              xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
              3⤵
              • Enumerates system info in registry
              PID:4576
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
              3⤵
                PID:5024
              • C:\Windows\SysWOW64\xcopy.exe
                xcopy "KDECO.bat" "C:\Windows \System32\" /K /D /H /Y
                3⤵
                • Enumerates system info in registry
                PID:3964
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                3⤵
                  PID:1492
                • C:\Windows\SysWOW64\xcopy.exe
                  xcopy "x.bat" "C:\Windows \System32\" /K /D /H /Y
                  3⤵
                  • Enumerates system info in registry
                  PID:4392
                • C:\Windows \System32\easinvoker.exe
                  "C:\\Windows \\System32\\easinvoker.exe"
                  3⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:2420
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
                    4⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1860
                    • C:\Windows\system32\sc.exe
                      sc.exe create truesight binPath="C:\Users\Public\Libraries\truesight.sys" type=kernel
                      5⤵
                      • Launches sc.exe
                      PID:3320
                    • C:\Windows\system32\cmd.exe
                      cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:828
                      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                        powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                        6⤵
                        • Suspicious use of AdjustPrivilegeToken
                        PID:1200
                    • C:\Windows\system32\sc.exe
                      sc.exe start truesight
                      5⤵
                      • Launches sc.exe
                      PID:2028
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c "C:\\Windows \\System32\\easinvoker.exe"
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:4780
                • C:\Windows \System32\easinvoker.exe
                  "C:\\Windows \\System32\\easinvoker.exe"
                  3⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:2364
              • C:\Windows\SysWOW64\colorcpl.exe
                C:\Windows\System32\colorcpl.exe
                2⤵
                • Suspicious use of SetThreadContext
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:4364
                • C:\Windows\SysWOW64\colorcpl.exe
                  C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\kiawgtqrttdopwfsooafybsp"
                  3⤵
                    PID:940
                  • C:\Windows\SysWOW64\colorcpl.exe
                    C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\kiawgtqrttdopwfsooafybsp"
                    3⤵
                      PID:4812
                    • C:\Windows\SysWOW64\colorcpl.exe
                      C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\ukfphmbkhbvtrcbwxzmhjongbnhy"
                      3⤵
                      • Accesses Microsoft Outlook accounts
                      PID:4144
                    • C:\Windows\SysWOW64\colorcpl.exe
                      C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\wfszaelmdkngtipaokhimthpkuyhjxm"
                      3⤵
                      • Suspicious use of AdjustPrivilegeToken
                      PID:4792
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 4364 -s 1484
                      3⤵
                      • Program crash
                      PID:2392
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4364 -ip 4364
                  1⤵
                    PID:1320

                  Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

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                        Downloads

                        __PSScriptPolicyTest_wv2qjuno.1ns.ps1

                        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wv2qjuno.1ns.ps1
                        • Size 60B
                        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                        • MD5 SHA1 SHA512

                        kiawgtqrttdopwfsooafybsp

                        • Path C:\Users\Admin\AppData\Local\Temp\kiawgtqrttdopwfsooafybsp
                        • Size 4KB
                        • SHA256 155c37d976ae56d6d9d7bed09e2802dade565be58b8af769b1e815ceb044c318
                        • MD5 SHA1 SHA512 SSDEEP

                        KDECO.bat

                        • Path C:\Users\Public\Libraries\KDECO.bat
                        • Size 4KB
                        • SHA256 c8e1912a3328802e98563e32eb053ae3e28249b701054af227e9f1ba6bfe24d9
                        • MD5 SHA1 SHA512 SSDEEP

                        WcccssaiO.bat

                        • Path C:\Users\Public\Libraries\WcccssaiO.bat
                        • Size 7KB
                        • SHA256 f46e0cc2c119a32dd87edf97bfc73d985ee97d2c9dc00274b6b20d641e29deea
                        • 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 116KB
                        • SHA256 e443c8e9201f17ef4180d97a8505c24b4645e3ab25eacdeb8807d036229e2c1a
                        • MD5 SHA1 SHA512 SSDEEP

                        memory/116-46-0x0000000002960000-0x0000000002961000-memory.dmp

                        memory/116-4-0x0000000000400000-0x0000000000608000-memory.dmp

                        memory/116-1-0x0000000004150000-0x0000000005150000-memory.dmp

                        memory/116-0-0x0000000002960000-0x0000000002961000-memory.dmp

                        memory/116-2-0x0000000004150000-0x0000000005150000-memory.dmp

                        memory/1200-30-0x000001CBCAD60000-0x000001CBCAD82000-memory.dmp

                        memory/1200-42-0x000001CBE2FF0000-0x000001CBE3000000-memory.dmp

                        memory/1200-41-0x000001CBE2FF0000-0x000001CBE3000000-memory.dmp

                        memory/1200-45-0x00007FFE09E80000-0x00007FFE0A941000-memory.dmp

                        memory/1200-40-0x00007FFE09E80000-0x00007FFE0A941000-memory.dmp

                        memory/2364-49-0x00000000613C0000-0x00000000613E3000-memory.dmp

                        memory/2420-28-0x00000000613C0000-0x00000000613E3000-memory.dmp

                        memory/4144-81-0x0000000000400000-0x0000000000457000-memory.dmp

                        memory/4144-74-0x0000000000400000-0x0000000000457000-memory.dmp

                        memory/4144-70-0x0000000000400000-0x0000000000457000-memory.dmp

                        memory/4144-66-0x0000000000400000-0x0000000000457000-memory.dmp

                        memory/4364-59-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-82-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-62-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-95-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-57-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-51-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-60-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-55-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-92-0x000000001B330000-0x000000001B349000-memory.dmp

                        memory/4364-54-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-87-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4364-89-0x000000001B330000-0x000000001B349000-memory.dmp

                        memory/4364-53-0x00000000008A0000-0x00000000018A0000-memory.dmp

                        memory/4792-71-0x0000000000400000-0x0000000000424000-memory.dmp

                        memory/4792-84-0x0000000000400000-0x0000000000424000-memory.dmp

                        memory/4792-80-0x0000000000400000-0x0000000000424000-memory.dmp

                        memory/4792-79-0x0000000000400000-0x0000000000424000-memory.dmp

                        memory/4792-78-0x0000000000400000-0x0000000000424000-memory.dmp

                        memory/4812-65-0x0000000000400000-0x0000000000478000-memory.dmp

                        memory/4812-86-0x0000000000400000-0x0000000000478000-memory.dmp

                        memory/4812-67-0x0000000000400000-0x0000000000478000-memory.dmp

                        memory/4812-69-0x0000000000400000-0x0000000000478000-memory.dmp

                        memory/4812-63-0x0000000000400000-0x0000000000478000-memory.dmp