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Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/10/2022, 11:46

General

  • Target

    687aa5201aa1eca07781480db977400bf5db13ce09ba2bc3088acfdc3848623c.exe

  • Size

    100KB

  • MD5

    7b65fc8620b797756b7e99b852ba0b9c

  • SHA1

    7d6294e5805cd24b884de8e06875f1fdb3adc30c

  • SHA256

    687aa5201aa1eca07781480db977400bf5db13ce09ba2bc3088acfdc3848623c

  • SHA512

    41bb619ada97c547e9683e7eecfcbf68cc84ec6fddb7700870b05a288616701911035d7681171a8c53cbb717093eb1bddb95d280174deb9fef0eef5a57caddc0

  • SSDEEP

    1536:mCW589a4Iju5HufBq8I+N1KXN1OFbcNcLd9GRfidRWPQHmks6cEtvcW:a589a4DEBq6N1KNABccjG5idOQVs

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 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\dwm.exe
    "dwm.exe"
    1⤵
      PID:1008
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
        PID:2308
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3456
        • C:\Windows\system32\backgroundTaskHost.exe
          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
          1⤵
            PID:2700
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:2056
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:4820
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:3744
                • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                  1⤵
                    PID:3552
                  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                    1⤵
                      PID:3352
                    • C:\Windows\system32\DllHost.exe
                      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                      1⤵
                        PID:3244
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                        1⤵
                          PID:2948
                        • C:\Windows\Explorer.EXE
                          C:\Windows\Explorer.EXE
                          1⤵
                            PID:2424
                            • C:\Users\Admin\AppData\Local\Temp\687aa5201aa1eca07781480db977400bf5db13ce09ba2bc3088acfdc3848623c.exe
                              "C:\Users\Admin\AppData\Local\Temp\687aa5201aa1eca07781480db977400bf5db13ce09ba2bc3088acfdc3848623c.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:984
                          • C:\Windows\system32\taskhostw.exe
                            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                            1⤵
                              PID:2416
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                              1⤵
                                PID:2328
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:776
                                • C:\Windows\system32\fontdrvhost.exe
                                  "fontdrvhost.exe"
                                  1⤵
                                    PID:768

                                  Network

                                  MITRE ATT&CK Enterprise v6

                                  Replay Monitor

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                                  Downloads

                                  • memory/984-133-0x0000000000400000-0x0000000000413000-memory.dmp

                                    Filesize

                                    76KB

                                  • memory/984-132-0x0000000002180000-0x000000000320E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/984-134-0x0000000002180000-0x000000000320E000-memory.dmp

                                    Filesize

                                    16.6MB