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Analysis

  • max time kernel
    155s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/10/2022, 19:37

General

  • Target

    4b56d46267549d7779b654c5e87b5f22c2bd3119895cc626f7078ccc14b3d2ba.exe

  • Size

    77KB

  • MD5

    0c99003c4aade57da5e58cb7c18b478d

  • SHA1

    5605a3de7d599b1c3de1f8c1a1992a4b2bb39cd0

  • SHA256

    4b56d46267549d7779b654c5e87b5f22c2bd3119895cc626f7078ccc14b3d2ba

  • SHA512

    eb04103ca4adbaf46d9d95b033a4ccee7c572ce28ffe782b019742510b397269bd9eb7b0d389433808c13716a72619d6096e0f85756e19440b14874a7f7e1edb

  • SSDEEP

    1536:30Pq57AdgYDfqqBzCXCNDFVxOezfW8LzkCx1giGR6rWaP6S9qGn5VB70F5:EY7EgUfqq9Um6SXzbfgd6rWaVcG5V+H

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 2 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\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2592
      • C:\Users\Admin\AppData\Local\Temp\4b56d46267549d7779b654c5e87b5f22c2bd3119895cc626f7078ccc14b3d2ba.exe
        "C:\Users\Admin\AppData\Local\Temp\4b56d46267549d7779b654c5e87b5f22c2bd3119895cc626f7078ccc14b3d2ba.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:4756
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:3516
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:4812
        • C:\Windows\system32\backgroundTaskHost.exe
          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
          1⤵
            PID:3576
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:4664
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3788
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:3600
                • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                  1⤵
                    PID:3448
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3344
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                      1⤵
                        PID:3148
                      • C:\Windows\system32\taskhostw.exe
                        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                        1⤵
                          PID:2708
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                          1⤵
                            PID:2504
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2484
                            • C:\Windows\system32\dwm.exe
                              "dwm.exe"
                              1⤵
                                PID:64
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:800
                                • C:\Windows\system32\fontdrvhost.exe
                                  "fontdrvhost.exe"
                                  1⤵
                                    PID:792

                                  Network

                                  MITRE ATT&CK Enterprise v6

                                  Replay Monitor

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                                  Downloads

                                  • memory/4756-132-0x0000000000400000-0x0000000000415000-memory.dmp

                                    Filesize

                                    84KB

                                  • memory/4756-133-0x0000000002170000-0x00000000031FE000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/4756-134-0x0000000002170000-0x00000000031FE000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/4756-135-0x0000000000400000-0x0000000000415000-memory.dmp

                                    Filesize

                                    84KB