Analysis

  • max time kernel
    142s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/08/2023, 18:41

General

  • Target

    79f77c8d8a9ce313f3d1f55c273778572c70e03164bda384985bd4416539881b.exe

  • Size

    3.6MB

  • MD5

    d5131732f42b79db72f914fabd6e91e3

  • SHA1

    cb1822b05e57118433e4fe86fcb7437795e425ef

  • SHA256

    79f77c8d8a9ce313f3d1f55c273778572c70e03164bda384985bd4416539881b

  • SHA512

    0426fb96bed067f929601c9049045960db5e3cac621590560553f525794b6908b9af73d1ab1b5b368a9bc85adb86623c6fd620467aa0adfc7f21e5fe48a1246f

  • SSDEEP

    98304:ytHautEXQtFfXLYyU3M0+4GYpm+hln4CqLqopxpygsZV97z:yBaObV+M0+4GKzhu1PygSV93

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

Signatures

  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • UPX packed file 13 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:784
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:320
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
          PID:2676
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
          1⤵
            PID:2756
          • C:\Windows\system32\taskhostw.exe
            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
            1⤵
              PID:2852
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
              1⤵
                PID:3268
              • C:\Windows\Explorer.EXE
                C:\Windows\Explorer.EXE
                1⤵
                  PID:3156
                  • C:\Users\Admin\AppData\Local\Temp\79f77c8d8a9ce313f3d1f55c273778572c70e03164bda384985bd4416539881b.exe
                    "C:\Users\Admin\AppData\Local\Temp\79f77c8d8a9ce313f3d1f55c273778572c70e03164bda384985bd4416539881b.exe"
                    2⤵
                    • Modifies firewall policy service
                    • UAC bypass
                    • Windows security bypass
                    • Windows security modification
                    • Drops file in Windows directory
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    • System policy modification
                    PID:840
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  1⤵
                    PID:3456
                  • C:\Windows\System32\RuntimeBroker.exe
                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                    1⤵
                      PID:3664
                    • C:\Windows\System32\RuntimeBroker.exe
                      C:\Windows\System32\RuntimeBroker.exe -Embedding
                      1⤵
                        PID:4940
                      • C:\Windows\System32\RuntimeBroker.exe
                        C:\Windows\System32\RuntimeBroker.exe -Embedding
                        1⤵
                          PID:3984
                        • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                          "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                          1⤵
                            PID:3756
                          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                            1⤵
                              PID:3552
                            • C:\Windows\system32\fontdrvhost.exe
                              "fontdrvhost.exe"
                              1⤵
                                PID:792
                              • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe
                                "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca
                                1⤵
                                  PID:4676

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                • memory/840-133-0x0000000000400000-0x00000000007E7000-memory.dmp

                                  Filesize

                                  3.9MB

                                • memory/840-134-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-139-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-141-0x0000000006DB0000-0x0000000006DB2000-memory.dmp

                                  Filesize

                                  8KB

                                • memory/840-142-0x0000000007000000-0x0000000007001000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/840-140-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-144-0x0000000006DB0000-0x0000000006DB2000-memory.dmp

                                  Filesize

                                  8KB

                                • memory/840-145-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-146-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-147-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-154-0x0000000000400000-0x00000000007E7000-memory.dmp

                                  Filesize

                                  3.9MB

                                • memory/840-148-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-155-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-156-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-157-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-158-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-159-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/840-169-0x0000000006DB0000-0x0000000006DB2000-memory.dmp

                                  Filesize

                                  8KB

                                • memory/840-160-0x0000000002700000-0x00000000037BA000-memory.dmp

                                  Filesize

                                  16.7MB