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Analysis

  • max time kernel
    152s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/12/2022, 09:51

General

  • Target

    e86771720e10a7fef6720d022604a6b5e57280fa90fdaf2c25725307720475b4.exe

  • Size

    180KB

  • MD5

    2efbe67e13c2d5f04b71a5d21e3dae72

  • SHA1

    a8b03629b5bc24d9a9003567fcbbc868f88d6bc9

  • SHA256

    e86771720e10a7fef6720d022604a6b5e57280fa90fdaf2c25725307720475b4

  • SHA512

    8eef0b7917d1f1bbd23b75f2fe5e1ff9a15e9d4759a5991511eb05dcfddce534022dc42c4bfb830d418ce996c9b6cbc64a31fadbf28b7fc817b80d27bba84ff8

  • SSDEEP

    3072:pCbLSL5zAsdHm490ySm1EcOYG3aa+zvRz5N8uy:pCPq+EHm49mMEB8vXNhy

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 WinLogon for persistence 2 TTPs 1 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
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • UPX packed file 3 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 9 IoCs
  • Drops file in Windows directory 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\dwm.exe
    "dwm.exe"
    1⤵
      PID:64
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:816
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        1⤵
          PID:808
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3472
          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
            1⤵
              PID:3404
            • C:\Windows\system32\DllHost.exe
              C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
              1⤵
                PID:3304
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                1⤵
                  PID:3108
                • C:\Windows\Explorer.EXE
                  C:\Windows\Explorer.EXE
                  1⤵
                    PID:1012
                    • C:\Users\Admin\AppData\Local\Temp\e86771720e10a7fef6720d022604a6b5e57280fa90fdaf2c25725307720475b4.exe
                      "C:\Users\Admin\AppData\Local\Temp\e86771720e10a7fef6720d022604a6b5e57280fa90fdaf2c25725307720475b4.exe"
                      2⤵
                      • Modifies WinLogon for persistence
                      • UAC bypass
                      • Windows security bypass
                      • Disables RegEdit via registry modification
                      • Windows security modification
                      • Adds Run key to start application
                      • Checks whether UAC is enabled
                      • Drops file in System32 directory
                      • Drops file in Program Files directory
                      • Drops file in Windows directory
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of SetWindowsHookEx
                      • Suspicious use of WriteProcessMemory
                      • System policy modification
                      PID:3460
                      • C:\Windows\SysWOW64\netsh.exe
                        netsh firewall set opmode disable
                        3⤵
                        • Modifies Windows Firewall
                        PID:4736
                        • C:\Windows\System32\Conhost.exe
                          \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                          4⤵
                            PID:4904
                    • C:\Windows\system32\taskhostw.exe
                      taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                      1⤵
                        PID:2728
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                        1⤵
                          PID:2508
                        • C:\Windows\system32\sihost.exe
                          sihost.exe
                          1⤵
                            PID:2440
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            1⤵
                              PID:3816
                            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                              1⤵
                                PID:3560
                              • C:\Windows\system32\backgroundTaskHost.exe
                                "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppX53ypgrj20bgndg05hj3tc7z654myszwp.mca
                                1⤵
                                  PID:4284
                                • C:\Windows\system32\backgroundTaskHost.exe
                                  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                  1⤵
                                    PID:1360
                                  • C:\Windows\System32\RuntimeBroker.exe
                                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                                    1⤵
                                      PID:5076
                                    • C:\Windows\system32\backgroundTaskHost.exe
                                      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                                      1⤵
                                        PID:4100
                                      • C:\Windows\system32\backgroundTaskHost.exe
                                        "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                        1⤵
                                          PID:1556

                                        Network

                                        MITRE ATT&CK Enterprise v6

                                        Replay Monitor

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                                        Downloads

                                        • memory/3460-132-0x0000000000400000-0x0000000000433000-memory.dmp

                                          Filesize

                                          204KB

                                        • memory/3460-133-0x0000000002BB0000-0x0000000003BE3000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/3460-137-0x0000000002BB0000-0x0000000003BE3000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/3460-138-0x0000000002BB0000-0x0000000003BE3000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/3460-139-0x0000000000400000-0x0000000000433000-memory.dmp

                                          Filesize

                                          204KB