Analysis

  • max time kernel
    1800s
  • max time network
    1799s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    07-12-2024 18:43

General

  • Target

    smss.exe

  • Size

    260KB

  • MD5

    27fe3482f2f12435310a3c84544f4f0b

  • SHA1

    dcef2cd3c551bf22b748556d7cdcd439a6cc5274

  • SHA256

    20105bd3112e1467d5081400343a6c4baa915c12012db77fadddd5a84e7a0b75

  • SHA512

    2324d9e10f410c3573d99dcdf3daf0960965e0e09a5134d21ad25e9cf6d0f91919e38cf37513b27baa25c3ade79825096dd88c50dfa5ddb82ff8ed36c32b2c48

  • SSDEEP

    6144:AVx3d4gxU0UqWTYFa6u+CaTy8ZcILWlxwbtEW3kT4:An3S90y8aX+/RciixwbtkT

Malware Config

Signatures

  • Gh0st RAT payload 3 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • Gh0strat family
  • Modifies firewall policy service 3 TTPs 4 IoCs
  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Ramnit family
  • Executes dropped EXE 1 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • UPX packed file 3 IoCs

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

  • 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:640
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        2⤵
          PID:828
        • C:\Windows\system32\dwm.exe
          "dwm.exe"
          2⤵
            PID:472
        • C:\Windows\system32\lsass.exe
          C:\Windows\system32\lsass.exe
          1⤵
            PID:696
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k DcomLaunch -p
            1⤵
              PID:808
              • C:\Windows\system32\wbem\unsecapp.exe
                C:\Windows\system32\wbem\unsecapp.exe -Embedding
                2⤵
                  PID:2924
                • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
                  "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
                  2⤵
                    PID:3716
                  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                    2⤵
                      PID:3744
                    • C:\Windows\System32\RuntimeBroker.exe
                      C:\Windows\System32\RuntimeBroker.exe -Embedding
                      2⤵
                        PID:3836
                      • C:\Windows\System32\RuntimeBroker.exe
                        C:\Windows\System32\RuntimeBroker.exe -Embedding
                        2⤵
                          PID:3900
                        • C:\Windows\system32\DllHost.exe
                          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                          2⤵
                            PID:3920
                          • C:\Windows\system32\DllHost.exe
                            C:\Windows\system32\DllHost.exe /Processid:{973D20D7-562D-44B9-B70B-5A0F49CCDF3F}
                            2⤵
                              PID:4240
                            • C:\Windows\system32\SppExtComObj.exe
                              C:\Windows\system32\SppExtComObj.exe -Embedding
                              2⤵
                                PID:2984
                              • C:\Windows\system32\DllHost.exe
                                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                                2⤵
                                  PID:3280
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:820
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k RPCSS -p
                                  1⤵
                                    PID:940
                                  • C:\Windows\system32\svchost.exe
                                    C:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM
                                    1⤵
                                      PID:1000
                                    • C:\Windows\system32\svchost.exe
                                      C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
                                      1⤵
                                        PID:460
                                      • C:\Windows\System32\svchost.exe
                                        C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
                                        1⤵
                                          PID:1052
                                        • C:\Windows\system32\svchost.exe
                                          C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork -p
                                          1⤵
                                            PID:1068
                                          • C:\Windows\System32\svchost.exe
                                            C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
                                            1⤵
                                              PID:1112
                                            • C:\Windows\system32\svchost.exe
                                              C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
                                              1⤵
                                                PID:1132
                                              • C:\Windows\system32\svchost.exe
                                                C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
                                                1⤵
                                                  PID:1164
                                                • C:\Windows\system32\svchost.exe
                                                  C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
                                                  1⤵
                                                    PID:1248
                                                  • C:\Windows\system32\svchost.exe
                                                    C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
                                                    1⤵
                                                      PID:1312
                                                    • C:\Windows\System32\svchost.exe
                                                      C:\Windows\System32\svchost.exe -k netprofm -p -s netprofm
                                                      1⤵
                                                        PID:1340
                                                      • C:\Windows\system32\svchost.exe
                                                        C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
                                                        1⤵
                                                          PID:1356
                                                        • C:\Windows\system32\svchost.exe
                                                          C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
                                                          1⤵
                                                            PID:1412
                                                            • C:\Windows\system32\sihost.exe
                                                              sihost.exe
                                                              2⤵
                                                                PID:2968
                                                            • C:\Windows\System32\svchost.exe
                                                              C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
                                                              1⤵
                                                                PID:1576
                                                              • C:\Windows\system32\svchost.exe
                                                                C:\Windows\system32\svchost.exe -k NetworkService -p
                                                                1⤵
                                                                  PID:1632
                                                                • C:\Windows\system32\svchost.exe
                                                                  C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
                                                                  1⤵
                                                                    PID:1704
                                                                  • C:\Windows\System32\svchost.exe
                                                                    C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
                                                                    1⤵
                                                                      PID:1712
                                                                    • C:\Windows\system32\svchost.exe
                                                                      C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
                                                                      1⤵
                                                                        PID:1724
                                                                      • C:\Windows\system32\svchost.exe
                                                                        C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
                                                                        1⤵
                                                                          PID:1824
                                                                        • C:\Windows\System32\svchost.exe
                                                                          C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
                                                                          1⤵
                                                                            PID:1912
                                                                          • C:\Windows\System32\svchost.exe
                                                                            C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                                            1⤵
                                                                              PID:2016
                                                                            • C:\Windows\System32\svchost.exe
                                                                              C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                                              1⤵
                                                                                PID:1048
                                                                              • C:\Windows\system32\svchost.exe
                                                                                C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                                                1⤵
                                                                                  PID:1332
                                                                                • C:\Windows\System32\svchost.exe
                                                                                  C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
                                                                                  1⤵
                                                                                    PID:2044
                                                                                  • C:\Windows\system32\svchost.exe
                                                                                    C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
                                                                                    1⤵
                                                                                      PID:2056
                                                                                    • C:\Windows\System32\spoolsv.exe
                                                                                      C:\Windows\System32\spoolsv.exe
                                                                                      1⤵
                                                                                        PID:2180
                                                                                      • C:\Windows\system32\svchost.exe
                                                                                        C:\Windows\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p
                                                                                        1⤵
                                                                                          PID:2200
                                                                                        • C:\Windows\System32\svchost.exe
                                                                                          C:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation
                                                                                          1⤵
                                                                                            PID:2244
                                                                                          • C:\Windows\System32\svchost.exe
                                                                                            C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc
                                                                                            1⤵
                                                                                              PID:2348
                                                                                            • C:\Windows\system32\svchost.exe
                                                                                              C:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent
                                                                                              1⤵
                                                                                                PID:2460
                                                                                              • C:\Windows\system32\svchost.exe
                                                                                                C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
                                                                                                1⤵
                                                                                                  PID:2468
                                                                                                • C:\Windows\system32\svchost.exe
                                                                                                  C:\Windows\system32\svchost.exe -k NetworkService -p
                                                                                                  1⤵
                                                                                                    PID:2516
                                                                                                  • C:\Windows\sysmon.exe
                                                                                                    C:\Windows\sysmon.exe
                                                                                                    1⤵
                                                                                                      PID:2584
                                                                                                    • C:\Windows\system32\svchost.exe
                                                                                                      C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
                                                                                                      1⤵
                                                                                                        PID:2632
                                                                                                      • C:\Windows\system32\svchost.exe
                                                                                                        C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
                                                                                                        1⤵
                                                                                                          PID:2652
                                                                                                        • C:\Windows\System32\svchost.exe
                                                                                                          C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks
                                                                                                          1⤵
                                                                                                            PID:2660
                                                                                                          • C:\Windows\system32\svchost.exe
                                                                                                            C:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService
                                                                                                            1⤵
                                                                                                              PID:2668
                                                                                                            • C:\Windows\system32\svchost.exe
                                                                                                              C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                                                                                                              1⤵
                                                                                                                PID:3016
                                                                                                              • C:\Windows\Explorer.EXE
                                                                                                                C:\Windows\Explorer.EXE
                                                                                                                1⤵
                                                                                                                  PID:3300
                                                                                                                  • C:\Users\Admin\AppData\Local\Temp\smss.exe
                                                                                                                    "C:\Users\Admin\AppData\Local\Temp\smss.exe"
                                                                                                                    2⤵
                                                                                                                    • Modifies firewall policy service
                                                                                                                    • Enumerates connected drives
                                                                                                                    • System Location Discovery: System Language Discovery
                                                                                                                    • Suspicious behavior: EnumeratesProcesses
                                                                                                                    • Suspicious behavior: MapViewOfSection
                                                                                                                    • Suspicious behavior: RenamesItself
                                                                                                                    • Suspicious use of AdjustPrivilegeToken
                                                                                                                    • Suspicious use of WriteProcessMemory
                                                                                                                    PID:2480
                                                                                                                    • C:\Users\Admin\AppData\Local\Temp\smssSrv.exe
                                                                                                                      C:\Users\Admin\AppData\Local\Temp\smssSrv.exe
                                                                                                                      3⤵
                                                                                                                      • Executes dropped EXE
                                                                                                                      • System Location Discovery: System Language Discovery
                                                                                                                      PID:3096
                                                                                                                      • C:\Windows\SysWOW64\WerFault.exe
                                                                                                                        C:\Windows\SysWOW64\WerFault.exe -u -p 3096 -s 320
                                                                                                                        4⤵
                                                                                                                        • Program crash
                                                                                                                        PID:2824
                                                                                                                • C:\Windows\system32\svchost.exe
                                                                                                                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                                                                                                                  1⤵
                                                                                                                    PID:3432
                                                                                                                  • C:\Windows\system32\svchost.exe
                                                                                                                    C:\Windows\system32\svchost.exe -k netsvcs -p -s Appinfo
                                                                                                                    1⤵
                                                                                                                      PID:3444
                                                                                                                    • C:\Windows\system32\svchost.exe
                                                                                                                      C:\Windows\system32\svchost.exe -k UdkSvcGroup -s UdkUserSvc
                                                                                                                      1⤵
                                                                                                                        PID:4036
                                                                                                                      • C:\Windows\system32\svchost.exe
                                                                                                                        C:\Windows\system32\svchost.exe -k osprivacy -p -s camsvc
                                                                                                                        1⤵
                                                                                                                          PID:4348
                                                                                                                        • C:\Windows\system32\svchost.exe
                                                                                                                          C:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc
                                                                                                                          1⤵
                                                                                                                            PID:5068
                                                                                                                          • C:\Windows\System32\svchost.exe
                                                                                                                            C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc
                                                                                                                            1⤵
                                                                                                                              PID:2456
                                                                                                                            • C:\Windows\system32\svchost.exe
                                                                                                                              C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc
                                                                                                                              1⤵
                                                                                                                                PID:3460
                                                                                                                              • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                                                                                                                "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                                                                                                                1⤵
                                                                                                                                  PID:2772
                                                                                                                                • C:\Windows\System32\svchost.exe
                                                                                                                                  C:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager
                                                                                                                                  1⤵
                                                                                                                                    PID:2916
                                                                                                                                  • C:\Windows\system32\svchost.exe
                                                                                                                                    C:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc
                                                                                                                                    1⤵
                                                                                                                                      PID:3264
                                                                                                                                    • C:\Windows\system32\svchost.exe
                                                                                                                                      C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s NgcCtnrSvc
                                                                                                                                      1⤵
                                                                                                                                        PID:3756
                                                                                                                                      • C:\Windows\System32\svchost.exe
                                                                                                                                        C:\Windows\System32\svchost.exe -k WerSvcGroup
                                                                                                                                        1⤵
                                                                                                                                          PID:440
                                                                                                                                          • C:\Windows\SysWOW64\WerFault.exe
                                                                                                                                            C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3096 -ip 3096
                                                                                                                                            2⤵
                                                                                                                                              PID:2064

                                                                                                                                          Network

                                                                                                                                          MITRE ATT&CK Enterprise v15

                                                                                                                                          Replay Monitor

                                                                                                                                          Loading Replay Monitor...

                                                                                                                                          Downloads

                                                                                                                                          • C:\Users\Admin\AppData\Local\Temp\smssSrv.exe

                                                                                                                                            Filesize

                                                                                                                                            84KB

                                                                                                                                            MD5

                                                                                                                                            5cdc5ad14f0f7476711d2ab65607fe5b

                                                                                                                                            SHA1

                                                                                                                                            d03fa4a202afc929725f969471a8c1d5943fd12a

                                                                                                                                            SHA256

                                                                                                                                            4e7d57da4995611e1451846e7a08017a4fbca09215a31707d6ac2957b71f5a97

                                                                                                                                            SHA512

                                                                                                                                            b0a0c1367efcd37c827306ca5ebad1cd6fca695d12746df1686a3f9ee1d59698ef82ba98b5e697f311168a63533d7046729eae921ce177213183253ea815a9a2

                                                                                                                                          • memory/2480-0-0x0000000000400000-0x0000000000442000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            264KB

                                                                                                                                          • memory/2480-7-0x000000007FE70000-0x000000007FE7C000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            48KB

                                                                                                                                          • memory/2480-8-0x0000000000400000-0x0000000000442000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            264KB

                                                                                                                                          • memory/2480-10-0x000000007FE70000-0x000000007FE7C000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            48KB

                                                                                                                                          • memory/2480-9-0x000000007FE70000-0x000000007FE7C000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            48KB

                                                                                                                                          • memory/2480-12-0x0000000000400000-0x0000000000442000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            264KB

                                                                                                                                          • memory/2480-25-0x000000007FE70000-0x000000007FE7C000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            48KB

                                                                                                                                          • memory/3096-6-0x0000000000400000-0x0000000000435000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            212KB

                                                                                                                                          • memory/3096-5-0x0000000002010000-0x000000000201F000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            60KB

                                                                                                                                          • memory/3096-4-0x0000000000400000-0x0000000000435000-memory.dmp

                                                                                                                                            Filesize

                                                                                                                                            212KB