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Analysis

  • max time kernel
    154s
  • max time network
    196s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/10/2022, 01:55

General

  • Target

    25ef9a6b7a2d46e51d19e1bea07c2c9c9f887c4d0e75244947d6d067446f9b7b.exe

  • Size

    100KB

  • MD5

    92f7018a7e3e71b7c871d6a1834be961

  • SHA1

    1588c5b2961e1f81da75011f3846681c078a014b

  • SHA256

    25ef9a6b7a2d46e51d19e1bea07c2c9c9f887c4d0e75244947d6d067446f9b7b

  • SHA512

    78451e59c9cf08e34f0f4dd19bf194a460a879bcf3b8110c6c751f8fed64d7c966950b9af00e884ccdad2f4b5efb6912176791ca8a1e6557885db4e9de86e9be

  • SSDEEP

    3072:92RiEWXRFIgPRzHandHbfjxjttd0sXLqt:Yg3fIgPShJdbk

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\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:3572
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:1436
      • C:\Windows\system32\backgroundTaskHost.exe
        "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
        1⤵
          PID:3732
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:4604
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3832
            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
              1⤵
                PID:3660
              • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                1⤵
                  PID:3508
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  1⤵
                    PID:3416
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                    1⤵
                      PID:3216
                    • C:\Windows\Explorer.EXE
                      C:\Windows\Explorer.EXE
                      1⤵
                        PID:3076
                        • C:\Users\Admin\AppData\Local\Temp\25ef9a6b7a2d46e51d19e1bea07c2c9c9f887c4d0e75244947d6d067446f9b7b.exe
                          "C:\Users\Admin\AppData\Local\Temp\25ef9a6b7a2d46e51d19e1bea07c2c9c9f887c4d0e75244947d6d067446f9b7b.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:2312
                      • C:\Windows\system32\taskhostw.exe
                        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                        1⤵
                          PID:2580
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                          1⤵
                            PID:2444
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2436
                            • C:\Windows\system32\dwm.exe
                              "dwm.exe"
                              1⤵
                                PID:60
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:784
                                • C:\Windows\system32\fontdrvhost.exe
                                  "fontdrvhost.exe"
                                  1⤵
                                    PID:776

                                  Network

                                  MITRE ATT&CK Enterprise v6

                                  Replay Monitor

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                                  Downloads

                                  • memory/2312-133-0x0000000000400000-0x0000000000416000-memory.dmp

                                    Filesize

                                    88KB

                                  • memory/2312-132-0x00000000022B0000-0x000000000333E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/2312-134-0x00000000022B0000-0x000000000333E000-memory.dmp

                                    Filesize

                                    16.6MB