Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/06/2024, 12:39

General

  • Target

    2024-06-15_df42d89cd6441b780ec0bfaa2f5bf589_avoslocker.exe

  • Size

    1001KB

  • MD5

    df42d89cd6441b780ec0bfaa2f5bf589

  • SHA1

    1faadfb87859eb6e77693898e095e4dc3438af35

  • SHA256

    fcc3cf6c4310bd23e6201727d98916fd9831041ef90710a37193b5986b09335e

  • SHA512

    4e67d86887c5f5b5c362313bed9a8f278db13dfa4bf2fe211548010e60f8d25844aae35e1d80ae5f8add3cf6a4e5c13868f57217ccefe78e673a92a9d2af3a6f

  • SSDEEP

    24576:nNbP+i822rvtMR82UumYYmyUfWmfy7NWlVeh5WKg8QT6ckW:n5+j6+2UumYYmycWmfy5WlVeOKgQcz

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/

http://klkjwre77638dfqwieuoi888.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
  • Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 11 IoCs
  • UPX dump on OEP (original entry point) 12 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • UPX packed file 11 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
  • Drops file in Windows directory 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:788
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:792
      • C:\Windows\system32\dwm.exe
        "dwm.exe"
        1⤵
          PID:384
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:2568
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
            1⤵
              PID:2576
            • C:\Windows\system32\taskhostw.exe
              taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
              1⤵
                PID:2680
              • C:\Windows\Explorer.EXE
                C:\Windows\Explorer.EXE
                1⤵
                  PID:3432
                  • C:\Users\Admin\AppData\Local\Temp\2024-06-15_df42d89cd6441b780ec0bfaa2f5bf589_avoslocker.exe
                    "C:\Users\Admin\AppData\Local\Temp\2024-06-15_df42d89cd6441b780ec0bfaa2f5bf589_avoslocker.exe"
                    2⤵
                    • Modifies firewall policy service
                    • UAC bypass
                    • Windows security bypass
                    • Disables RegEdit via registry modification
                    • Windows security modification
                    • Checks whether UAC is enabled
                    • Drops file in Windows directory
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    • System policy modification
                    PID:4224
                    • C:\Windows\System32\Conhost.exe
                      \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                      3⤵
                        PID:2328
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                    1⤵
                      PID:3668
                    • C:\Windows\system32\DllHost.exe
                      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                      1⤵
                        PID:3860
                      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                        1⤵
                          PID:3948
                        • C:\Windows\System32\RuntimeBroker.exe
                          C:\Windows\System32\RuntimeBroker.exe -Embedding
                          1⤵
                            PID:4012
                          • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                            "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                            1⤵
                              PID:4088
                            • C:\Windows\System32\RuntimeBroker.exe
                              C:\Windows\System32\RuntimeBroker.exe -Embedding
                              1⤵
                                PID:3512
                              • 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:4344
                                • C:\Windows\System32\RuntimeBroker.exe
                                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                                  1⤵
                                    PID:1244
                                  • C:\Windows\system32\backgroundTaskHost.exe
                                    "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                                    1⤵
                                      PID:3228
                                    • C:\Windows\system32\backgroundTaskHost.exe
                                      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                      1⤵
                                        PID:4432

                                      Network

                                            MITRE ATT&CK Enterprise v15

                                            Replay Monitor

                                            Loading Replay Monitor...

                                            Downloads

                                            • memory/4224-0-0x0000000000C40000-0x0000000000D3C000-memory.dmp

                                              Filesize

                                              1008KB

                                            • memory/4224-4-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-3-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-7-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-9-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-10-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-11-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-21-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-27-0x0000000000C40000-0x0000000000D3C000-memory.dmp

                                              Filesize

                                              1008KB

                                            • memory/4224-18-0x0000000004D80000-0x0000000004D82000-memory.dmp

                                              Filesize

                                              8KB

                                            • memory/4224-14-0x0000000004D80000-0x0000000004D82000-memory.dmp

                                              Filesize

                                              8KB

                                            • memory/4224-13-0x0000000004ED0000-0x0000000004ED1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/4224-12-0x0000000004D80000-0x0000000004D82000-memory.dmp

                                              Filesize

                                              8KB

                                            • memory/4224-6-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-5-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-8-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB

                                            • memory/4224-1-0x0000000002EE0000-0x0000000003F6E000-memory.dmp

                                              Filesize

                                              16.6MB