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Analysis

  • max time kernel
    153s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04/12/2022, 02:23

General

  • Target

    4a5da1b9494470a4e3c88894e294104c5437df989456b1209764a5b444652d02.dll

  • Size

    180KB

  • MD5

    b484124d84114eefed6e32e5b97de8a0

  • SHA1

    984c28db719cc975ad77f4e431e919b3cc7fc912

  • SHA256

    4a5da1b9494470a4e3c88894e294104c5437df989456b1209764a5b444652d02

  • SHA512

    438acc48ff2784f164ef49e33e5539fcd6d13b38289cac644f7339b9bf3a0f989e8d472c01fb6078e1b343a1ca90bf85322d4587bdd689aeb5c7e97422b31c88

  • SSDEEP

    3072:Kn4cV8gf2u41Z5tKl4xoaePShY+dWvVJQTUsqPa7sn3Dvo:w4y8gOl2dznvUIxa7UDvo

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 12 IoCs

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

  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\lsass.exe
    C:\Windows\system32\lsass.exe
    1⤵
      PID:476
    • C:\Windows\system32\services.exe
      C:\Windows\system32\services.exe
      1⤵
        PID:460
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
          2⤵
            PID:1028
          • C:\Windows\system32\sppsvc.exe
            C:\Windows\system32\sppsvc.exe
            2⤵
              PID:1128
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
              2⤵
                PID:1816
              • C:\Windows\system32\taskhost.exe
                "taskhost.exe"
                2⤵
                  PID:1228
                • C:\Windows\System32\spoolsv.exe
                  C:\Windows\System32\spoolsv.exe
                  2⤵
                    PID:272
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k NetworkService
                    2⤵
                      PID:300
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k netsvcs
                      2⤵
                        PID:868
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k LocalService
                        2⤵
                          PID:844
                        • C:\Windows\System32\svchost.exe
                          C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
                          2⤵
                            PID:792
                          • C:\Windows\System32\svchost.exe
                            C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
                            2⤵
                              PID:744
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k RPCSS
                              2⤵
                                PID:656
                              • C:\Windows\system32\svchost.exe
                                C:\Windows\system32\svchost.exe -k DcomLaunch
                                2⤵
                                  PID:580
                              • C:\Windows\system32\winlogon.exe
                                winlogon.exe
                                1⤵
                                  PID:416
                                • C:\Windows\system32\csrss.exe
                                  %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
                                  1⤵
                                    PID:376
                                  • C:\Windows\system32\wininit.exe
                                    wininit.exe
                                    1⤵
                                      PID:368
                                      • C:\Windows\system32\lsm.exe
                                        C:\Windows\system32\lsm.exe
                                        2⤵
                                          PID:484
                                      • C:\Windows\system32\csrss.exe
                                        %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
                                        1⤵
                                          PID:332
                                        • C:\Windows\System32\smss.exe
                                          \SystemRoot\System32\smss.exe
                                          1⤵
                                            PID:260
                                          • C:\Windows\Explorer.EXE
                                            C:\Windows\Explorer.EXE
                                            1⤵
                                              PID:1352
                                              • C:\Windows\system32\rundll32.exe
                                                rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a5da1b9494470a4e3c88894e294104c5437df989456b1209764a5b444652d02.dll,#1
                                                2⤵
                                                • Suspicious use of WriteProcessMemory
                                                PID:1488
                                                • C:\Windows\SysWOW64\rundll32.exe
                                                  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a5da1b9494470a4e3c88894e294104c5437df989456b1209764a5b444652d02.dll,#1
                                                  3⤵
                                                  • Loads dropped DLL
                                                  • Drops file in System32 directory
                                                  • Suspicious use of WriteProcessMemory
                                                  PID:1260
                                                  • C:\Windows\SysWOW64\rundll32Srv.exe
                                                    C:\Windows\SysWOW64\rundll32Srv.exe
                                                    4⤵
                                                    • Executes dropped EXE
                                                    • Loads dropped DLL
                                                    • Drops file in Program Files directory
                                                    • Suspicious use of WriteProcessMemory
                                                    PID:2036
                                                    • C:\Program Files (x86)\Microsoft\WaterMark.exe
                                                      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
                                                      5⤵
                                                      • Executes dropped EXE
                                                      • Suspicious behavior: EnumeratesProcesses
                                                      • Suspicious use of AdjustPrivilegeToken
                                                      • Suspicious use of WriteProcessMemory
                                                      PID:1576
                                                      • C:\Windows\SysWOW64\svchost.exe
                                                        C:\Windows\system32\svchost.exe
                                                        6⤵
                                                        • Modifies WinLogon for persistence
                                                        • Drops file in System32 directory
                                                        • Drops file in Program Files directory
                                                        • Suspicious use of AdjustPrivilegeToken
                                                        PID:1416
                                                      • C:\Windows\SysWOW64\svchost.exe
                                                        C:\Windows\system32\svchost.exe
                                                        6⤵
                                                        • Suspicious behavior: EnumeratesProcesses
                                                        • Suspicious use of AdjustPrivilegeToken
                                                        • Suspicious use of WriteProcessMemory
                                                        PID:1700
                                            • \\?\C:\Windows\system32\wbem\WMIADAP.EXE
                                              wmiadap.exe /F /T /R
                                              1⤵
                                                PID:2000
                                              • C:\Windows\system32\Dwm.exe
                                                "C:\Windows\system32\Dwm.exe"
                                                1⤵
                                                  PID:1316

                                                Network

                                                MITRE ATT&CK Enterprise v6

                                                Replay Monitor

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                                                Downloads

                                                • C:\Program Files (x86)\Microsoft\WaterMark.exe

                                                  Filesize

                                                  90KB

                                                  MD5

                                                  91b07c6f70654a26ca1cd8cde6fb2a7e

                                                  SHA1

                                                  789629859ed76191432fd7ab40cfa0487b580a6e

                                                  SHA256

                                                  37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

                                                  SHA512

                                                  077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

                                                • C:\Program Files (x86)\Microsoft\WaterMark.exe

                                                  Filesize

                                                  90KB

                                                  MD5

                                                  91b07c6f70654a26ca1cd8cde6fb2a7e

                                                  SHA1

                                                  789629859ed76191432fd7ab40cfa0487b580a6e

                                                  SHA256

                                                  37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

                                                  SHA512

                                                  077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

                                                • C:\Windows\SysWOW64\rundll32Srv.exe

                                                  Filesize

                                                  90KB

                                                  MD5

                                                  91b07c6f70654a26ca1cd8cde6fb2a7e

                                                  SHA1

                                                  789629859ed76191432fd7ab40cfa0487b580a6e

                                                  SHA256

                                                  37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

                                                  SHA512

                                                  077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

                                                • C:\Windows\SysWOW64\rundll32Srv.exe

                                                  Filesize

                                                  90KB

                                                  MD5

                                                  91b07c6f70654a26ca1cd8cde6fb2a7e

                                                  SHA1

                                                  789629859ed76191432fd7ab40cfa0487b580a6e

                                                  SHA256

                                                  37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

                                                  SHA512

                                                  077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

                                                • \Program Files (x86)\Microsoft\WaterMark.exe

                                                  Filesize

                                                  90KB

                                                  MD5

                                                  91b07c6f70654a26ca1cd8cde6fb2a7e

                                                  SHA1

                                                  789629859ed76191432fd7ab40cfa0487b580a6e

                                                  SHA256

                                                  37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

                                                  SHA512

                                                  077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

                                                • \Program Files (x86)\Microsoft\WaterMark.exe

                                                  Filesize

                                                  90KB

                                                  MD5

                                                  91b07c6f70654a26ca1cd8cde6fb2a7e

                                                  SHA1

                                                  789629859ed76191432fd7ab40cfa0487b580a6e

                                                  SHA256

                                                  37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

                                                  SHA512

                                                  077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

                                                • \Windows\SysWOW64\rundll32Srv.exe

                                                  Filesize

                                                  90KB

                                                  MD5

                                                  91b07c6f70654a26ca1cd8cde6fb2a7e

                                                  SHA1

                                                  789629859ed76191432fd7ab40cfa0487b580a6e

                                                  SHA256

                                                  37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

                                                  SHA512

                                                  077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

                                                • \Windows\SysWOW64\rundll32Srv.exe

                                                  Filesize

                                                  90KB

                                                  MD5

                                                  91b07c6f70654a26ca1cd8cde6fb2a7e

                                                  SHA1

                                                  789629859ed76191432fd7ab40cfa0487b580a6e

                                                  SHA256

                                                  37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

                                                  SHA512

                                                  077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

                                                • memory/1260-55-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

                                                  Filesize

                                                  8KB

                                                • memory/1260-56-0x0000000010000000-0x000000001002E000-memory.dmp

                                                  Filesize

                                                  184KB

                                                • memory/1416-193-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/1416-70-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/1416-74-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/1416-79-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/1576-67-0x0000000000400000-0x000000000045B000-memory.dmp

                                                  Filesize

                                                  364KB

                                                • memory/1576-192-0x0000000000400000-0x000000000045B000-memory.dmp

                                                  Filesize

                                                  364KB

                                                • memory/1576-78-0x0000000000400000-0x000000000045B000-memory.dmp

                                                  Filesize

                                                  364KB

                                                • memory/1576-136-0x0000000020020000-0x000000002002B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/1700-84-0x0000000020010000-0x000000002001B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/1700-81-0x0000000020010000-0x000000002001B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/2036-66-0x0000000000400000-0x000000000045B000-memory.dmp

                                                  Filesize

                                                  364KB