Analysis

  • max time kernel
    153s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2022 11:50

General

  • Target

    8f9c3fcb8c8c4a1d9708c60cc54fd394b5a5ef005445ec186c8236a163485144.exe

  • Size

    96KB

  • MD5

    8bd71af5728f60cb629d9348dc0201c7

  • SHA1

    42e4d8e9cdfb088b4396ec63c6f881619d0501bf

  • SHA256

    8f9c3fcb8c8c4a1d9708c60cc54fd394b5a5ef005445ec186c8236a163485144

  • SHA512

    4598c74b872a08e50dfb216c4c29aacfd2409dbe9dc33bca9f8cfe2fd26f9b2874267a977c5a21135094f19b7f0137932317f33416521573b5a8736edcb41064

  • SSDEEP

    3072:t1q3uFi0f9d2/A64gtmH3l3UpqJAdBgTGOq:fdiLYQ8V3BlT

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

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

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 3 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 11 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:788
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:64
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        1⤵
          PID:784
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
          1⤵
            PID:1080
          • C:\Windows\Explorer.EXE
            C:\Windows\Explorer.EXE
            1⤵
              PID:2596
              • C:\Users\Admin\AppData\Local\Temp\8f9c3fcb8c8c4a1d9708c60cc54fd394b5a5ef005445ec186c8236a163485144.exe
                "C:\Users\Admin\AppData\Local\Temp\8f9c3fcb8c8c4a1d9708c60cc54fd394b5a5ef005445ec186c8236a163485144.exe"
                2⤵
                • Modifies firewall policy service
                • UAC bypass
                • Windows security bypass
                • Windows security modification
                • Checks whether UAC is enabled
                • Enumerates connected drives
                • Drops autorun.inf file
                • Drops file in Program Files directory
                • Drops file in Windows directory
                • Modifies registry class
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                • System policy modification
                PID:3136
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3676
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:3528
                • C:\Windows\System32\RuntimeBroker.exe
                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                  1⤵
                    PID:3432
                  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                    1⤵
                      PID:3364
                    • C:\Windows\system32\DllHost.exe
                      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                      1⤵
                        PID:3268
                      • C:\Windows\system32\taskhostw.exe
                        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                        1⤵
                          PID:2740
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                          1⤵
                            PID:2500
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2480

                            Network

                            MITRE ATT&CK Enterprise v6

                            Replay Monitor

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                            Downloads

                            • memory/3136-132-0x0000000002180000-0x000000000320E000-memory.dmp

                              Filesize

                              16.6MB

                            • memory/3136-133-0x0000000000400000-0x0000000000412000-memory.dmp

                              Filesize

                              72KB

                            • memory/3136-134-0x0000000002180000-0x000000000320E000-memory.dmp

                              Filesize

                              16.6MB

                            • memory/3136-135-0x0000000002180000-0x000000000320E000-memory.dmp

                              Filesize

                              16.6MB