Resubmissions

02-01-2025 21:33

250102-1ejbvswpcv 10

08-12-2024 01:12

241208-bkq68azkep 10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-01-2025 21:33

General

  • Target

    k5.exe

  • Size

    76KB

  • MD5

    145c9edca1151d477e5c339b6d797cbd

  • SHA1

    f09d773d50f87c47500305e79bc1e6fcf503ebd6

  • SHA256

    ed989d9d7e04a312dffe2fdd8dd30273d5b07ee56941f1a724b6143752ef42da

  • SHA512

    10f5d6cacbbc96fa22c097f5b519fe1738a5531820518af00cedf8ca9112808bc2c2871845f85f496a1d08695441262ab3ed57068e6d029ec1e5aabdb32d47df

  • SSDEEP

    1536:bcPk2vG+Yq6GrXdOOq52m0HLxEulgsteEY+cZv8FYOicNx1q/6:v2vGM6GLdu52hHL6ulgsteEY+cZ90Nx1

Score
10/10

Malware Config

Signatures

  • Modifies firewall policy service 3 TTPs 4 IoCs
  • Modifies RDP port number used by Windows 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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:776
        • C:\Windows\system32\dwm.exe
          "dwm.exe"
          2⤵
            PID:332
        • C:\Windows\system32\lsass.exe
          C:\Windows\system32\lsass.exe
          1⤵
            PID:676
          • C:\Windows\system32\fontdrvhost.exe
            "fontdrvhost.exe"
            1⤵
              PID:780
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k DcomLaunch -p
              1⤵
                PID:796
                • C:\Windows\system32\wbem\unsecapp.exe
                  C:\Windows\system32\wbem\unsecapp.exe -Embedding
                  2⤵
                    PID:656
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    2⤵
                      PID:3752
                    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                      2⤵
                        PID:3844
                      • C:\Windows\System32\RuntimeBroker.exe
                        C:\Windows\System32\RuntimeBroker.exe -Embedding
                        2⤵
                          PID:3904
                        • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                          "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                          2⤵
                            PID:4012
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            2⤵
                              PID:3524
                            • C:\Windows\system32\SppExtComObj.exe
                              C:\Windows\system32\SppExtComObj.exe -Embedding
                              2⤵
                                PID:3988
                              • C:\Windows\system32\DllHost.exe
                                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                                2⤵
                                  PID:3576
                                • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe
                                  "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca
                                  2⤵
                                    PID:4376
                                  • C:\Windows\System32\RuntimeBroker.exe
                                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                                    2⤵
                                      PID:3376
                                    • C:\Windows\system32\backgroundTaskHost.exe
                                      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                      2⤵
                                        PID:4548
                                    • C:\Windows\system32\svchost.exe
                                      C:\Windows\system32\svchost.exe -k RPCSS -p
                                      1⤵
                                        PID:892
                                      • 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 netsvcs -p -s gpsvc
                                          1⤵
                                            PID:432
                                          • C:\Windows\System32\svchost.exe
                                            C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
                                            1⤵
                                              PID:1020
                                            • C:\Windows\system32\svchost.exe
                                              C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork -p
                                              1⤵
                                                PID:1092
                                              • C:\Windows\system32\svchost.exe
                                                C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
                                                1⤵
                                                  PID:1100
                                                  • C:\Windows\system32\taskhostw.exe
                                                    taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                                                    2⤵
                                                      PID:2880
                                                  • C:\Windows\System32\svchost.exe
                                                    C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
                                                    1⤵
                                                      PID:1108
                                                    • C:\Windows\System32\svchost.exe
                                                      C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
                                                      1⤵
                                                        PID:1120
                                                      • C:\Windows\system32\svchost.exe
                                                        C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
                                                        1⤵
                                                          PID:1240
                                                        • C:\Windows\system32\svchost.exe
                                                          C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
                                                          1⤵
                                                            PID:1248
                                                          • C:\Windows\system32\svchost.exe
                                                            C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
                                                            1⤵
                                                              PID:1272
                                                            • C:\Windows\system32\svchost.exe
                                                              C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
                                                              1⤵
                                                                PID:1328
                                                              • C:\Windows\system32\svchost.exe
                                                                C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
                                                                1⤵
                                                                  PID:1336
                                                                • C:\Windows\system32\svchost.exe
                                                                  C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
                                                                  1⤵
                                                                    PID:1420
                                                                    • C:\Windows\system32\sihost.exe
                                                                      sihost.exe
                                                                      2⤵
                                                                        PID:2632
                                                                    • C:\Windows\System32\svchost.exe
                                                                      C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
                                                                      1⤵
                                                                        PID:1576
                                                                      • C:\Windows\system32\svchost.exe
                                                                        C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
                                                                        1⤵
                                                                          PID:1584
                                                                        • C:\Windows\System32\svchost.exe
                                                                          C:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc
                                                                          1⤵
                                                                            PID:1604
                                                                          • C:\Windows\system32\svchost.exe
                                                                            C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
                                                                            1⤵
                                                                              PID:1708
                                                                            • C:\Windows\System32\svchost.exe
                                                                              C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
                                                                              1⤵
                                                                                PID:1756
                                                                              • C:\Windows\System32\svchost.exe
                                                                                C:\Windows\System32\svchost.exe -k LocalService -p -s netprofm
                                                                                1⤵
                                                                                  PID:1784
                                                                                • C:\Windows\System32\svchost.exe
                                                                                  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                                                  1⤵
                                                                                    PID:1824
                                                                                  • C:\Windows\system32\svchost.exe
                                                                                    C:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache
                                                                                    1⤵
                                                                                      PID:1880
                                                                                    • C:\Windows\System32\svchost.exe
                                                                                      C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                                                      1⤵
                                                                                        PID:1888
                                                                                      • C:\Windows\System32\svchost.exe
                                                                                        C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
                                                                                        1⤵
                                                                                          PID:1952
                                                                                        • C:\Windows\system32\svchost.exe
                                                                                          C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
                                                                                          1⤵
                                                                                            PID:2032
                                                                                          • C:\Windows\System32\spoolsv.exe
                                                                                            C:\Windows\System32\spoolsv.exe
                                                                                            1⤵
                                                                                              PID:1504
                                                                                            • C:\Windows\system32\svchost.exe
                                                                                              C:\Windows\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p
                                                                                              1⤵
                                                                                                PID:2052
                                                                                              • C:\Windows\System32\svchost.exe
                                                                                                C:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation
                                                                                                1⤵
                                                                                                  PID:2120
                                                                                                • C:\Windows\system32\svchost.exe
                                                                                                  C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
                                                                                                  1⤵
                                                                                                    PID:2260
                                                                                                  • C:\Windows\System32\svchost.exe
                                                                                                    C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc
                                                                                                    1⤵
                                                                                                      PID:2268
                                                                                                    • C:\Windows\system32\svchost.exe
                                                                                                      C:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent
                                                                                                      1⤵
                                                                                                        PID:2416
                                                                                                      • C:\Windows\system32\svchost.exe
                                                                                                        C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
                                                                                                        1⤵
                                                                                                          PID:2424
                                                                                                        • C:\Windows\system32\svchost.exe
                                                                                                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                                                                                                          1⤵
                                                                                                            PID:2664
                                                                                                          • C:\Windows\system32\svchost.exe
                                                                                                            C:\Windows\system32\svchost.exe -k NetworkService -p -s CryptSvc
                                                                                                            1⤵
                                                                                                              PID:2708
                                                                                                            • C:\Windows\sysmon.exe
                                                                                                              C:\Windows\sysmon.exe
                                                                                                              1⤵
                                                                                                                PID:2756
                                                                                                              • C:\Windows\system32\svchost.exe
                                                                                                                C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
                                                                                                                1⤵
                                                                                                                  PID:2776
                                                                                                                • C:\Windows\System32\svchost.exe
                                                                                                                  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks
                                                                                                                  1⤵
                                                                                                                    PID:2788
                                                                                                                  • C:\Windows\system32\svchost.exe
                                                                                                                    C:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService
                                                                                                                    1⤵
                                                                                                                      PID:2800
                                                                                                                    • C:\Windows\system32\svchost.exe
                                                                                                                      C:\Windows\system32\svchost.exe -k netsvcs -p -s TokenBroker
                                                                                                                      1⤵
                                                                                                                        PID:3028
                                                                                                                      • C:\Windows\system32\svchost.exe
                                                                                                                        C:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc
                                                                                                                        1⤵
                                                                                                                          PID:3356
                                                                                                                        • C:\Windows\Explorer.EXE
                                                                                                                          C:\Windows\Explorer.EXE
                                                                                                                          1⤵
                                                                                                                            PID:3440
                                                                                                                            • C:\Users\Admin\AppData\Local\Temp\k5.exe
                                                                                                                              "C:\Users\Admin\AppData\Local\Temp\k5.exe"
                                                                                                                              2⤵
                                                                                                                              • Modifies firewall policy service
                                                                                                                              • Drops file in Windows directory
                                                                                                                              • System Location Discovery: System Language Discovery
                                                                                                                              • Suspicious behavior: EnumeratesProcesses
                                                                                                                              • Suspicious behavior: MapViewOfSection
                                                                                                                              • Suspicious use of AdjustPrivilegeToken
                                                                                                                              • Suspicious use of WriteProcessMemory
                                                                                                                              PID:1636
                                                                                                                              • C:\Windows\SysWOW64\WerFault.exe
                                                                                                                                C:\Windows\SysWOW64\WerFault.exe -u -p 1636 -s 852
                                                                                                                                3⤵
                                                                                                                                • Program crash
                                                                                                                                PID:3340
                                                                                                                          • C:\Windows\system32\svchost.exe
                                                                                                                            C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                                                                                                                            1⤵
                                                                                                                              PID:3552
                                                                                                                            • C:\Windows\system32\svchost.exe
                                                                                                                              C:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc
                                                                                                                              1⤵
                                                                                                                                PID:4440
                                                                                                                              • C:\Windows\System32\svchost.exe
                                                                                                                                C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc
                                                                                                                                1⤵
                                                                                                                                  PID:2112
                                                                                                                                • C:\Windows\system32\svchost.exe
                                                                                                                                  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s SSDPSRV
                                                                                                                                  1⤵
                                                                                                                                    PID:1140
                                                                                                                                  • C:\Windows\system32\svchost.exe
                                                                                                                                    C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc
                                                                                                                                    1⤵
                                                                                                                                      PID:4444
                                                                                                                                    • C:\Windows\System32\svchost.exe
                                                                                                                                      C:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager
                                                                                                                                      1⤵
                                                                                                                                        PID:4880
                                                                                                                                      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                                                                                                                        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                                                                                                                        1⤵
                                                                                                                                          PID:2240
                                                                                                                                        • C:\Windows\system32\svchost.exe
                                                                                                                                          C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s NgcCtnrSvc
                                                                                                                                          1⤵
                                                                                                                                            PID:4976
                                                                                                                                          • C:\Windows\vanpws.exe
                                                                                                                                            C:\Windows\vanpws.exe
                                                                                                                                            1⤵
                                                                                                                                            • Executes dropped EXE
                                                                                                                                            • System Location Discovery: System Language Discovery
                                                                                                                                            • Checks processor information in registry
                                                                                                                                            • Suspicious behavior: EnumeratesProcesses
                                                                                                                                            • Suspicious use of AdjustPrivilegeToken
                                                                                                                                            PID:4452
                                                                                                                                          • C:\Windows\SysWOW64\WerFault.exe
                                                                                                                                            C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1636 -ip 1636
                                                                                                                                            1⤵
                                                                                                                                              PID:2116

                                                                                                                                            Network

                                                                                                                                            MITRE ATT&CK Enterprise v15

                                                                                                                                            Replay Monitor

                                                                                                                                            Loading Replay Monitor...

                                                                                                                                            Downloads

                                                                                                                                            • C:\Windows\vanpws.exe

                                                                                                                                              Filesize

                                                                                                                                              76KB

                                                                                                                                              MD5

                                                                                                                                              145c9edca1151d477e5c339b6d797cbd

                                                                                                                                              SHA1

                                                                                                                                              f09d773d50f87c47500305e79bc1e6fcf503ebd6

                                                                                                                                              SHA256

                                                                                                                                              ed989d9d7e04a312dffe2fdd8dd30273d5b07ee56941f1a724b6143752ef42da

                                                                                                                                              SHA512

                                                                                                                                              10f5d6cacbbc96fa22c097f5b519fe1738a5531820518af00cedf8ca9112808bc2c2871845f85f496a1d08695441262ab3ed57068e6d029ec1e5aabdb32d47df

                                                                                                                                            • memory/1636-8-0x000000007FE40000-0x000000007FE4C000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              48KB

                                                                                                                                            • memory/1636-11-0x000000007FE30000-0x000000007FE3C000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              48KB

                                                                                                                                            • memory/1636-2-0x000000007FE40000-0x000000007FE4C000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              48KB

                                                                                                                                            • memory/1636-1-0x0000000077312000-0x0000000077313000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              4KB

                                                                                                                                            • memory/1636-5-0x000000007FE40000-0x000000007FE4C000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              48KB

                                                                                                                                            • memory/1636-4-0x0000000077313000-0x0000000077314000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              4KB

                                                                                                                                            • memory/1636-3-0x0000000077312000-0x0000000077313000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              4KB

                                                                                                                                            • memory/1636-0-0x0000000000400000-0x0000000000414000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              80KB

                                                                                                                                            • memory/1636-20-0x0000000000400000-0x0000000000414000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              80KB

                                                                                                                                            • memory/1636-13-0x000000007FE30000-0x000000007FE3C000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              48KB

                                                                                                                                            • memory/1636-12-0x000000007FE30000-0x000000007FE3C000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              48KB

                                                                                                                                            • memory/1636-17-0x000000007FE40000-0x000000007FE4C000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              48KB

                                                                                                                                            • memory/1636-14-0x000000007FE30000-0x000000007FE3C000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              48KB

                                                                                                                                            • memory/4452-10-0x0000000000400000-0x0000000000414000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              80KB

                                                                                                                                            • memory/4452-21-0x0000000000400000-0x0000000000414000-memory.dmp

                                                                                                                                              Filesize

                                                                                                                                              80KB