Analysis

  • max time kernel
    120s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 02:34

General

  • Target
    436c10bd50b9ef6b557688e78f0385e6bcf805ba39c9187669ad0831a1f72321.exe
  • Size 3.0MB
  • Sample240610-c2t5wabe47
  • SHA256 436c10bd50b9ef6b557688e78f0385e6bcf805ba39c9187669ad0831a1f72321
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 3 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • UPX packed file 40 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

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

  • Drops autorun.inf file 1 TTPs 2 IoCs

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

  • Drops file in Program Files directory 12 IoCs
  • Drops file in Windows directory 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 40 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:780
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:784
      • C:\Windows\system32\dwm.exe
        "dwm.exe"
        1⤵
          PID:316
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:2556
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
            1⤵
              PID:2580
            • C:\Windows\system32\taskhostw.exe
              taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
              1⤵
                PID:2696
              • C:\Windows\Explorer.EXE
                C:\Windows\Explorer.EXE
                1⤵
                  PID:3572
                  • C:\Users\Admin\AppData\Local\Temp\436c10bd50b9ef6b557688e78f0385e6bcf805ba39c9187669ad0831a1f72321.exe
                    "C:\Users\Admin\AppData\Local\Temp\436c10bd50b9ef6b557688e78f0385e6bcf805ba39c9187669ad0831a1f72321.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
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    • System policy modification
                    PID:4604
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                  1⤵
                    PID:3672
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3872
                    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                      1⤵
                        PID:4032
                      • C:\Windows\System32\RuntimeBroker.exe
                        C:\Windows\System32\RuntimeBroker.exe -Embedding
                        1⤵
                          PID:716
                        • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                          "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                          1⤵
                            PID:3240
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            1⤵
                              PID:2940
                            • C:\Windows\System32\RuntimeBroker.exe
                              C:\Windows\System32\RuntimeBroker.exe -Embedding
                              1⤵
                                PID:388
                              • 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:1824
                                • C:\Windows\system32\backgroundTaskHost.exe
                                  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                  1⤵
                                    PID:1432
                                  • C:\Windows\System32\RuntimeBroker.exe
                                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                                    1⤵
                                      PID:4780
                                    • C:\Windows\System32\RuntimeBroker.exe
                                      C:\Windows\System32\RuntimeBroker.exe -Embedding
                                      1⤵
                                        PID:4720

                                      Network

                                            MITRE ATT&CK Enterprise v15

                                            Replay Monitor

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                                            Downloads

                                            cnaf.pif

                                            • Path F:\cnaf.pif
                                            • Size 100KB
                                            • SHA256 a26906f7a6cb3b064f78cd61d6d800d1eaa2087b2ec1a4869fbb74f3a1e52169
                                            • MD5 SHA1 SHA512 SSDEEP

                                            memory/4604-28-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-9-0x0000000003EE0000-0x0000000003EE2000-memory.dmp

                                            memory/4604-16-0x0000000003EF0000-0x0000000003F00000-memory.dmp

                                            memory/4604-10-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-14-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-6-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-15-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-4-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-13-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-12-0x0000000003F80000-0x0000000003F81000-memory.dmp

                                            memory/4604-11-0x0000000003EE0000-0x0000000003EE2000-memory.dmp

                                            memory/4604-5-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-0-0x0000000000400000-0x000000000071C000-memory.dmp

                                            memory/4604-7-0x0000000003EE0000-0x0000000003EE2000-memory.dmp

                                            memory/4604-17-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-18-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-19-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-20-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-21-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-23-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-24-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-25-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-3-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-27-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-45-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-32-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-36-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-38-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-39-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-41-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-43-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-30-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-48-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-49-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-50-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-52-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-53-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-54-0x0000000003EE0000-0x0000000003EE2000-memory.dmp

                                            memory/4604-55-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-57-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-64-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-64-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-66-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-67-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-68-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-69-0x0000000002610000-0x000000000369E000-memory.dmp

                                            memory/4604-1-0x0000000002610000-0x000000000369E000-memory.dmp