Analysis

  • max time kernel
    163s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2022 01:33

General

  • Target

    15a523f89ecd14315c1bd33fd62b142428eadd10dad64abb5899f57e0c828079.exe

  • Size

    108KB

  • MD5

    3636658fa95ccc201b5c24ef1be82ec3

  • SHA1

    4dfdbea69339e71c983d20581794e497ab8b4f5f

  • SHA256

    15a523f89ecd14315c1bd33fd62b142428eadd10dad64abb5899f57e0c828079

  • SHA512

    b2a7958dc621b20363a5fabe33ab21b53edd752766674c3933fac855d0bb97150c073534d585946ae9209ff0dca68cd7d283db17e112c18f487482c741a5e278

  • SSDEEP

    3072:aNW7dEvotvXpYnPuKZEtCiCsBV45yCyx9eq1y/GJlW:aNW7mvIqnPD4p3eX/GJs

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/

Extracted

Family

xtremerat

C2

mastino.no-ip.org

Signatures

  • Detect XtremeRAT payload 2 IoCs
  • 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
  • XtremeRAT

    The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.

  • UPX packed file 4 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:796
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:3472
      • C:\Users\Admin\AppData\Local\Temp\15a523f89ecd14315c1bd33fd62b142428eadd10dad64abb5899f57e0c828079.exe
        "C:\Users\Admin\AppData\Local\Temp\15a523f89ecd14315c1bd33fd62b142428eadd10dad64abb5899f57e0c828079.exe"
        1⤵
        • Modifies firewall policy service
        • UAC bypass
        • Windows security bypass
        • 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:3988
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
          2⤵
            PID:4480
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:4600
          • 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:3564
              • 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:3096
                    • C:\Windows\Explorer.EXE
                      C:\Windows\Explorer.EXE
                      1⤵
                        PID:676
                      • C:\Windows\system32\taskhostw.exe
                        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                        1⤵
                          PID:2872
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                          1⤵
                            PID:2768
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2760
                            • C:\Windows\system32\dwm.exe
                              "dwm.exe"
                              1⤵
                                PID:64
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:804

                                Network

                                MITRE ATT&CK Enterprise v6

                                Replay Monitor

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                                Downloads

                                • memory/3988-132-0x00000000022D0000-0x000000000335E000-memory.dmp

                                  Filesize

                                  16.6MB

                                • memory/3988-133-0x0000000010000000-0x000000001005F000-memory.dmp

                                  Filesize

                                  380KB

                                • memory/3988-134-0x0000000010000000-0x000000001005F000-memory.dmp

                                  Filesize

                                  380KB

                                • memory/3988-135-0x00000000022D0000-0x000000000335E000-memory.dmp

                                  Filesize

                                  16.6MB