Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/01/2023, 06:28

General

  • Target
    SecuriteInfo.com.Win32.BackdoorX-gen.13570.3244.exe
  • Size 733KB
  • Sample230109-g8bz4agg5x
  • SHA256 6cc55a2e242baca97ac93ff859f4da04a9cbdeab28c3c69cef1806e87538feff
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • obologs.work.gd:34346

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-5NOBMZ

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • 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 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 4 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.BackdoorX-gen.13570.3244.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.BackdoorX-gen.13570.3244.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4528
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\YentagijO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3524
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
        3⤵
          PID:3068
        • C:\Windows\SysWOW64\xcopy.exe
          xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
          3⤵
          • Enumerates system info in registry
          PID:3844
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
          3⤵
            PID:1292
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
            3⤵
            • Enumerates system info in registry
            PID:3032
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy "KDECO.bat" "C:\Windows \System32\" /K /D /H /Y
            3⤵
            • Enumerates system info in registry
            PID:4880
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
            3⤵
              PID:528
            • C:\Windows \System32\easinvoker.exe
              "C:\Windows \System32\easinvoker.exe"
              3⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:4780
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:1512
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  powershell -WindowStyle Hidden -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                  5⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3768
            • C:\Windows\SysWOW64\PING.EXE
              ping 127.0.0.1 -n 6
              3⤵
              • Runs ping.exe
              PID:4492
          • C:\Users\Public\Libraries\jigatneY.pif
            C:\Users\Public\Libraries\jigatneY.pif
            2⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Suspicious use of SetThreadContext
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:2780
            • C:\Users\Public\Libraries\jigatneY.pif
              C:\Users\Public\Libraries\jigatneY.pif /stext "C:\Users\Admin\AppData\Local\Temp\xlctux"
              3⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:3760
            • C:\Users\Public\Libraries\jigatneY.pif
              C:\Users\Public\Libraries\jigatneY.pif /stext "C:\Users\Admin\AppData\Local\Temp\ifimupnzg"
              3⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              PID:1932
            • C:\Users\Public\Libraries\jigatneY.pif
              C:\Users\Public\Libraries\jigatneY.pif /stext "C:\Users\Admin\AppData\Local\Temp\kinwviyaucil"
              3⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:5116
            • C:\Users\Admin\AppData\Local\Temp\dwn.exe
              "C:\Users\Admin\AppData\Local\Temp\dwn.exe"
              3⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:4104
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
                4⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3012
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                4⤵
                  PID:1344
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  4⤵
                  • Accesses Microsoft Outlook profiles
                  • Drops file in Windows directory
                  • Checks processor information in registry
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • outlook_office_path
                  • outlook_win_path
                  PID:2384
                  • C:\Windows\SysWOW64\cmd.exe
                    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
                    5⤵
                      PID:5060
                      • C:\Windows\SysWOW64\chcp.com
                        chcp 65001
                        6⤵
                          PID:796
                        • C:\Windows\SysWOW64\netsh.exe
                          netsh wlan show profile
                          6⤵
                            PID:2296
                          • C:\Windows\SysWOW64\findstr.exe
                            findstr All
                            6⤵
                              PID:2836
                          • C:\Windows\SysWOW64\cmd.exe
                            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
                            5⤵
                              PID:2796
                              • C:\Windows\SysWOW64\chcp.com
                                chcp 65001
                                6⤵
                                  PID:3276
                                • C:\Windows\SysWOW64\netsh.exe
                                  netsh wlan show networks mode=bssid
                                  6⤵
                                    PID:4512
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 2968
                                  5⤵
                                  • Program crash
                                  PID:3652
                        • C:\Windows\system32\msiexec.exe
                          C:\Windows\system32\msiexec.exe /V
                          1⤵
                          • Suspicious use of AdjustPrivilegeToken
                          PID:4032
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2384 -ip 2384
                          1⤵
                            PID:4644

                          Network

                                MITRE ATT&CK Enterprise v6

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                StartupProfileData-NonInteractive

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                                • Size 64B
                                • SHA256 83e613b6dc8d70e3bb67c58535e014f58f3e8b2921e93b55137d799fc8c56391
                                • MD5 SHA1 SHA512

                                dwn.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\dwn.exe
                                • Size 9KB
                                • SHA256 f027c998db10a1c3bb0f0dba450dfc73deaad98db9ea7f772266e0508ad3cd39
                                • MD5 SHA1 SHA512 SSDEEP

                                dwn.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\dwn.exe
                                • Size 9KB
                                • SHA256 f027c998db10a1c3bb0f0dba450dfc73deaad98db9ea7f772266e0508ad3cd39
                                • MD5 SHA1 SHA512 SSDEEP

                                xlctux

                                • Path C:\Users\Admin\AppData\Local\Temp\xlctux
                                • Size 4KB
                                • SHA256 8d46702077d776b04085cbe5ce2f0e5971595ea4e11b025a215c4379e7fc18f8
                                • MD5 SHA1 SHA512 SSDEEP

                                KDECO.bat

                                • Path C:\Users\Public\Libraries\KDECO.bat
                                • Size 155B
                                • SHA256 37c59c8398279916cfce45f8c5e3431058248f5e3bef4d9f5c0f44a7d564f82e
                                • MD5 SHA1 SHA512

                                YentagijO.bat

                                • Path C:\Users\Public\Libraries\YentagijO.bat
                                • Size 411B
                                • SHA256 5a11c5641c476891aa30e7ecfa57c2639f6827d8640061f73e9afec0adbbd7d2
                                • MD5 SHA1 SHA512

                                easinvoker.exe

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

                                jigatneY.pif

                                • Path C:\Users\Public\Libraries\jigatneY.pif
                                • Size 118KB
                                • SHA256 9a38991461288014473dd1d6de00238a69d14ff36bc5a555ac4d88479da1e0af
                                • MD5 SHA1 SHA512 SSDEEP

                                jigatneY.pif

                                • Path C:\Users\Public\Libraries\jigatneY.pif
                                • Size 118KB
                                • SHA256 9a38991461288014473dd1d6de00238a69d14ff36bc5a555ac4d88479da1e0af
                                • MD5 SHA1 SHA512 SSDEEP

                                jigatneY.pif

                                • Path C:\Users\Public\Libraries\jigatneY.pif
                                • Size 118KB
                                • SHA256 9a38991461288014473dd1d6de00238a69d14ff36bc5a555ac4d88479da1e0af
                                • MD5 SHA1 SHA512 SSDEEP

                                jigatneY.pif

                                • Path C:\Users\Public\Libraries\jigatneY.pif
                                • Size 118KB
                                • SHA256 9a38991461288014473dd1d6de00238a69d14ff36bc5a555ac4d88479da1e0af
                                • MD5 SHA1 SHA512 SSDEEP

                                jigatneY.pif

                                • Path C:\Users\Public\Libraries\jigatneY.pif
                                • Size 118KB
                                • SHA256 9a38991461288014473dd1d6de00238a69d14ff36bc5a555ac4d88479da1e0af
                                • MD5 SHA1 SHA512 SSDEEP

                                netutils.dll

                                • Path C:\Users\Public\Libraries\netutils.dll
                                • Size 109KB
                                • SHA256 7c1a178a5629027a0bb19c743e8505b280a5b6dc22088cd1a6a0132e32d79fc2
                                • MD5 SHA1 SHA512 SSDEEP

                                easinvoker.exe

                                • Path C:\Windows \System32\easinvoker.exe
                                • Size 128KB
                                • SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
                                • MD5 SHA1 SHA512 SSDEEP

                                easinvoker.exe

                                • Path C:\Windows \System32\easinvoker.exe
                                • Size 128KB
                                • SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
                                • MD5 SHA1 SHA512 SSDEEP

                                netutils.dll

                                • Path C:\Windows \System32\netutils.dll
                                • Size 109KB
                                • SHA256 7c1a178a5629027a0bb19c743e8505b280a5b6dc22088cd1a6a0132e32d79fc2
                                • MD5 SHA1 SHA512 SSDEEP

                                netutils.dll

                                • Path C:\Windows \System32\netutils.dll
                                • Size 109KB
                                • SHA256 7c1a178a5629027a0bb19c743e8505b280a5b6dc22088cd1a6a0132e32d79fc2
                                • MD5 SHA1 SHA512 SSDEEP

                                KDECO.bat

                                • Path C:\windows \system32\KDECO.bat
                                • Size 155B
                                • SHA256 37c59c8398279916cfce45f8c5e3431058248f5e3bef4d9f5c0f44a7d564f82e
                                • MD5 SHA1 SHA512

                                memory/1932-170-0x0000000000400000-0x0000000000457000-memory.dmp

                                memory/2384-201-0x0000000000400000-0x0000000000586000-memory.dmp

                                memory/2780-163-0x0000000000640000-0x00000000006BF000-memory.dmp

                                memory/2780-162-0x0000000010590000-0x0000000010612000-memory.dmp

                                memory/2780-178-0x0000000010000000-0x0000000010019000-memory.dmp

                                memory/2780-198-0x0000000000640000-0x00000000006BF000-memory.dmp

                                memory/2780-183-0x0000000010000000-0x0000000010019000-memory.dmp

                                memory/2780-182-0x0000000010000000-0x0000000010019000-memory.dmp

                                memory/2780-181-0x0000000010000000-0x0000000010019000-memory.dmp

                                memory/3012-196-0x0000000007D90000-0x000000000840A000-memory.dmp

                                memory/3012-193-0x0000000005EB0000-0x0000000005F16000-memory.dmp

                                memory/3012-190-0x0000000004F70000-0x0000000004FA6000-memory.dmp

                                memory/3012-191-0x0000000005700000-0x0000000005D28000-memory.dmp

                                memory/3012-192-0x0000000005E40000-0x0000000005EA6000-memory.dmp

                                memory/3012-197-0x00000000069F0000-0x0000000006A0A000-memory.dmp

                                memory/3012-195-0x0000000006520000-0x000000000653E000-memory.dmp

                                memory/3760-171-0x0000000000400000-0x0000000000478000-memory.dmp

                                memory/3760-173-0x0000000000400000-0x0000000000478000-memory.dmp

                                memory/3768-156-0x00007FFFCE360000-0x00007FFFCEE21000-memory.dmp

                                memory/3768-155-0x00007FFFCE360000-0x00007FFFCEE21000-memory.dmp

                                memory/3768-154-0x000001B5B1120000-0x000001B5B1142000-memory.dmp

                                memory/4104-188-0x0000000009E70000-0x0000000009E92000-memory.dmp

                                memory/4104-187-0x0000000005680000-0x000000000568A000-memory.dmp

                                memory/4104-186-0x00000000056A0000-0x0000000005732000-memory.dmp

                                memory/4104-185-0x0000000005DB0000-0x0000000006354000-memory.dmp

                                memory/4104-184-0x0000000000CB0000-0x0000000000CB8000-memory.dmp

                                memory/4528-161-0x0000000010590000-0x0000000010612000-memory.dmp

                                memory/4528-132-0x00000000022E0000-0x000000000230C000-memory.dmp

                                memory/4528-157-0x0000000010590000-0x0000000010612000-memory.dmp

                                memory/5116-172-0x0000000000400000-0x0000000000424000-memory.dmp