Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220718-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/07/2022, 06:02

General

  • Target
    fd87758748797802178a51c34cc53aa5.dll
  • Size 5.0MB
  • Sample220720-grgh9adabp
  • SHA256 640dce63eee0174f579c4b7e9c5be5d343b7c92fa00bfa8b5939da503cc30b6f
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 4 IoCs
  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3221) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Executes dropped EXE 2 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops file in Windows directory 2 IoCs
  • Program crash 1 IoCs
  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:620
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        2⤵
          PID:764
        • C:\Windows\system32\dwm.exe
          "dwm.exe"
          2⤵
            PID:60
        • C:\Windows\system32\lsass.exe
          C:\Windows\system32\lsass.exe
          1⤵
            PID:672
          • C:\Windows\system32\fontdrvhost.exe
            "fontdrvhost.exe"
            1⤵
              PID:772
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k RPCSS -p
              1⤵
                PID:904
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
                1⤵
                  PID:440
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM
                  1⤵
                    PID:952
                  • C:\Windows\System32\svchost.exe
                    C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
                    1⤵
                      PID:608
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork -p
                      1⤵
                        PID:868
                      • C:\Windows\System32\svchost.exe
                        C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
                        1⤵
                          PID:1036
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
                          1⤵
                            PID:1124
                            • C:\Windows\system32\taskhostw.exe
                              taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                              2⤵
                                PID:2892
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
                              1⤵
                                PID:1044
                              • C:\Windows\system32\svchost.exe
                                C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
                                1⤵
                                  PID:1180
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k DcomLaunch -p
                                  1⤵
                                    PID:788
                                    • C:\Windows\system32\DllHost.exe
                                      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                                      2⤵
                                        PID:3268
                                      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                                        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                                        2⤵
                                          PID:3364
                                        • C:\Windows\System32\RuntimeBroker.exe
                                          C:\Windows\System32\RuntimeBroker.exe -Embedding
                                          2⤵
                                            PID:3432
                                          • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                                            "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                                            2⤵
                                              PID:3524
                                            • C:\Windows\System32\RuntimeBroker.exe
                                              C:\Windows\System32\RuntimeBroker.exe -Embedding
                                              2⤵
                                                PID:3672
                                              • C:\Windows\system32\DllHost.exe
                                                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                                                2⤵
                                                  PID:460
                                                • C:\Windows\System32\RuntimeBroker.exe
                                                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                                                  2⤵
                                                    PID:3096
                                                  • C:\Windows\system32\wbem\wmiprvse.exe
                                                    C:\Windows\system32\wbem\wmiprvse.exe
                                                    2⤵
                                                      PID:1152
                                                    • C:\Windows\system32\SppExtComObj.exe
                                                      C:\Windows\system32\SppExtComObj.exe -Embedding
                                                      2⤵
                                                        PID:4444
                                                    • C:\Windows\System32\svchost.exe
                                                      C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
                                                      1⤵
                                                        PID:1212
                                                      • C:\Windows\system32\svchost.exe
                                                        C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
                                                        1⤵
                                                          PID:1316
                                                        • C:\Windows\system32\svchost.exe
                                                          C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
                                                          1⤵
                                                            PID:1332
                                                            • C:\Windows\system32\sihost.exe
                                                              sihost.exe
                                                              2⤵
                                                                PID:2804
                                                            • C:\Windows\system32\svchost.exe
                                                              C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
                                                              1⤵
                                                                PID:1352
                                                              • C:\Windows\System32\svchost.exe
                                                                C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
                                                                1⤵
                                                                  PID:1404
                                                                • C:\Windows\system32\svchost.exe
                                                                  C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
                                                                  1⤵
                                                                    PID:1396
                                                                  • C:\Windows\system32\svchost.exe
                                                                    C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
                                                                    1⤵
                                                                      PID:1484
                                                                    • C:\Windows\system32\svchost.exe
                                                                      C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
                                                                      1⤵
                                                                        PID:1560
                                                                      • C:\Windows\system32\svchost.exe
                                                                        C:\Windows\system32\svchost.exe -k LocalService -p -s FontCache
                                                                        1⤵
                                                                          PID:1636
                                                                        • C:\Windows\System32\svchost.exe
                                                                          C:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc
                                                                          1⤵
                                                                            PID:1696
                                                                          • C:\Windows\System32\svchost.exe
                                                                            C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
                                                                            1⤵
                                                                              PID:1624
                                                                            • C:\Windows\System32\svchost.exe
                                                                              C:\Windows\System32\svchost.exe -k LocalService -p -s netprofm
                                                                              1⤵
                                                                                PID:1808
                                                                              • C:\Windows\System32\svchost.exe
                                                                                C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                                                1⤵
                                                                                  PID:1788
                                                                                • C:\Windows\system32\svchost.exe
                                                                                  C:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache
                                                                                  1⤵
                                                                                    PID:1932
                                                                                  • C:\Windows\system32\svchost.exe
                                                                                    C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
                                                                                    1⤵
                                                                                      PID:1976
                                                                                    • C:\Windows\System32\svchost.exe
                                                                                      C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                                                      1⤵
                                                                                        PID:1924
                                                                                      • C:\Windows\System32\svchost.exe
                                                                                        C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
                                                                                        1⤵
                                                                                          PID:2016
                                                                                        • C:\Windows\System32\spoolsv.exe
                                                                                          C:\Windows\System32\spoolsv.exe
                                                                                          1⤵
                                                                                            PID:1724
                                                                                          • C:\Windows\System32\svchost.exe
                                                                                            C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc
                                                                                            1⤵
                                                                                              PID:2056
                                                                                            • C:\Windows\system32\svchost.exe
                                                                                              C:\Windows\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p
                                                                                              1⤵
                                                                                                PID:2068
                                                                                              • C:\Windows\System32\svchost.exe
                                                                                                C:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation
                                                                                                1⤵
                                                                                                  PID:2128
                                                                                                • C:\Windows\system32\svchost.exe
                                                                                                  C:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent
                                                                                                  1⤵
                                                                                                    PID:2304
                                                                                                  • C:\Windows\system32\svchost.exe
                                                                                                    C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
                                                                                                    1⤵
                                                                                                      PID:2312
                                                                                                    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                                                                                      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                                                                                      1⤵
                                                                                                        PID:2384
                                                                                                      • C:\Windows\system32\svchost.exe
                                                                                                        C:\Windows\system32\svchost.exe -k NetworkService -p -s CryptSvc
                                                                                                        1⤵
                                                                                                          PID:2412
                                                                                                        • C:\Windows\system32\svchost.exe
                                                                                                          C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
                                                                                                          1⤵
                                                                                                            PID:2516
                                                                                                          • C:\Windows\System32\svchost.exe
                                                                                                            C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks
                                                                                                            1⤵
                                                                                                              PID:2532
                                                                                                            • C:\Windows\system32\svchost.exe
                                                                                                              C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
                                                                                                              1⤵
                                                                                                                PID:2548
                                                                                                              • C:\Windows\system32\svchost.exe
                                                                                                                C:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService
                                                                                                                1⤵
                                                                                                                  PID:2556
                                                                                                                • C:\Windows\system32\svchost.exe
                                                                                                                  C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                                                                                                                  1⤵
                                                                                                                    PID:2832
                                                                                                                  • C:\Windows\Explorer.EXE
                                                                                                                    C:\Windows\Explorer.EXE
                                                                                                                    1⤵
                                                                                                                      PID:2704
                                                                                                                      • C:\Windows\system32\rundll32.exe
                                                                                                                        rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd87758748797802178a51c34cc53aa5.dll,#1
                                                                                                                        2⤵
                                                                                                                        • Suspicious use of WriteProcessMemory
                                                                                                                        PID:1516
                                                                                                                        • C:\Windows\SysWOW64\rundll32.exe
                                                                                                                          rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd87758748797802178a51c34cc53aa5.dll,#1
                                                                                                                          3⤵
                                                                                                                          • Drops file in Windows directory
                                                                                                                          • Suspicious use of WriteProcessMemory
                                                                                                                          PID:1540
                                                                                                                          • C:\WINDOWS\mssecsvc.exe
                                                                                                                            C:\WINDOWS\mssecsvc.exe
                                                                                                                            4⤵
                                                                                                                            • Modifies firewall policy service
                                                                                                                            • Executes dropped EXE
                                                                                                                            • Drops file in Windows directory
                                                                                                                            • Suspicious behavior: EnumeratesProcesses
                                                                                                                            • Suspicious behavior: MapViewOfSection
                                                                                                                            • Suspicious use of AdjustPrivilegeToken
                                                                                                                            • Suspicious use of WriteProcessMemory
                                                                                                                            PID:1864
                                                                                                                            • C:\Windows\SysWOW64\WerFault.exe
                                                                                                                              C:\Windows\SysWOW64\WerFault.exe -u -p 1864 -s 1424
                                                                                                                              5⤵
                                                                                                                              • Program crash
                                                                                                                              PID:4508
                                                                                                                    • C:\Windows\system32\svchost.exe
                                                                                                                      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                                                                                                                      1⤵
                                                                                                                        PID:692
                                                                                                                      • C:\Windows\System32\svchost.exe
                                                                                                                        C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc
                                                                                                                        1⤵
                                                                                                                          PID:1824
                                                                                                                        • C:\Windows\system32\svchost.exe
                                                                                                                          C:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc
                                                                                                                          1⤵
                                                                                                                            PID:2828
                                                                                                                          • C:\Windows\system32\svchost.exe
                                                                                                                            C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc
                                                                                                                            1⤵
                                                                                                                              PID:1284
                                                                                                                            • C:\Windows\System32\svchost.exe
                                                                                                                              C:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager
                                                                                                                              1⤵
                                                                                                                                PID:4712
                                                                                                                              • C:\Windows\system32\svchost.exe
                                                                                                                                C:\Windows\system32\svchost.exe -k LocalService -s W32Time
                                                                                                                                1⤵
                                                                                                                                  PID:3900
                                                                                                                                • C:\Windows\system32\svchost.exe
                                                                                                                                  C:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc
                                                                                                                                  1⤵
                                                                                                                                    PID:2256
                                                                                                                                  • C:\WINDOWS\mssecsvc.exe
                                                                                                                                    C:\WINDOWS\mssecsvc.exe -m security
                                                                                                                                    1⤵
                                                                                                                                    • Executes dropped EXE
                                                                                                                                    • Modifies data under HKEY_USERS
                                                                                                                                    • Suspicious behavior: EnumeratesProcesses
                                                                                                                                    • Suspicious use of AdjustPrivilegeToken
                                                                                                                                    PID:3360
                                                                                                                                  • C:\Windows\SysWOW64\WerFault.exe
                                                                                                                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1864 -ip 1864
                                                                                                                                    1⤵
                                                                                                                                      PID:748

                                                                                                                                    Network

                                                                                                                                          MITRE ATT&CK Enterprise v6

                                                                                                                                          Replay Monitor

                                                                                                                                          Loading Replay Monitor...

                                                                                                                                          Downloads

                                                                                                                                          mssecsvc.exe

                                                                                                                                          • Path C:\WINDOWS\mssecsvc.exe
                                                                                                                                          • Size 3.6MB
                                                                                                                                          • SHA256 659c4e32060f61188f264b7a702bb51e0d76d41c0c9bb10edd8c677e967feed7
                                                                                                                                          • MD5 SHA1 SHA512 SSDEEP

                                                                                                                                          mssecsvc.exe

                                                                                                                                          • Path C:\Windows\mssecsvc.exe
                                                                                                                                          • Size 3.6MB
                                                                                                                                          • SHA256 659c4e32060f61188f264b7a702bb51e0d76d41c0c9bb10edd8c677e967feed7
                                                                                                                                          • MD5 SHA1 SHA512 SSDEEP

                                                                                                                                          mssecsvc.exe

                                                                                                                                          • Path C:\Windows\mssecsvc.exe
                                                                                                                                          • Size 3.6MB
                                                                                                                                          • SHA256 659c4e32060f61188f264b7a702bb51e0d76d41c0c9bb10edd8c677e967feed7
                                                                                                                                          • MD5 SHA1 SHA512 SSDEEP

                                                                                                                                          memory/1864-134-0x0000000000400000-0x0000000000A72000-memory.dmp

                                                                                                                                          memory/1864-137-0x000000007FE30000-0x000000007FE3C000-memory.dmp

                                                                                                                                          memory/1864-138-0x0000000000400000-0x0000000000A72000-memory.dmp

                                                                                                                                          memory/1864-139-0x000000007FE30000-0x000000007FE3C000-memory.dmp

                                                                                                                                          memory/3360-136-0x0000000000400000-0x0000000000A72000-memory.dmp

                                                                                                                                          memory/3360-140-0x0000000000400000-0x0000000000A72000-memory.dmp