Analysis

  • max time kernel
    149s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/11/2022, 07:16

General

  • Target

    4242127e2b7bb4c8baeea02f8c52fb2114fc480748ba4ee69d47cfdfa89d4acd.exe

  • Size

    100KB

  • MD5

    2df0d4487133c16f16056c32fa3c4b77

  • SHA1

    54b91d935bdde4b4f03e094c873c9e99e426c7b7

  • SHA256

    4242127e2b7bb4c8baeea02f8c52fb2114fc480748ba4ee69d47cfdfa89d4acd

  • SHA512

    e1cd419d30303fe77550af1b65b654b118749ae0c30224f88dc70f53d3c477bda71a57fbb53c3b41edf3e6a41f22eed891b8b62791b67175e8ebdc72bbe55f57

  • SSDEEP

    1536:V33HqaqRxPUN0Ziyz0j4opcA02On6brA/49XbaGg4juD1B8sZ5:V3XCjXZiyz0EtX6oIgKof8sZ

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 3 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:64
    • C:\Users\Admin\AppData\Local\Temp\4242127e2b7bb4c8baeea02f8c52fb2114fc480748ba4ee69d47cfdfa89d4acd.exe
      "C:\Users\Admin\AppData\Local\Temp\4242127e2b7bb4c8baeea02f8c52fb2114fc480748ba4ee69d47cfdfa89d4acd.exe"
      1⤵
      • 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:4376
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:4768
      • 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:3480
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3392
            • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
              "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
              1⤵
                PID:3324
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                1⤵
                  PID:3228
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                  1⤵
                    PID:2708
                  • C:\Windows\Explorer.EXE
                    C:\Windows\Explorer.EXE
                    1⤵
                      PID:3040
                    • C:\Windows\system32\taskhostw.exe
                      taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                      1⤵
                        PID:2432
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                        1⤵
                          PID:2328
                        • C:\Windows\system32\sihost.exe
                          sihost.exe
                          1⤵
                            PID:2304
                          • C:\Windows\system32\fontdrvhost.exe
                            "fontdrvhost.exe"
                            1⤵
                              PID:804
                            • C:\Windows\system32\fontdrvhost.exe
                              "fontdrvhost.exe"
                              1⤵
                                PID:800

                              Network

                              MITRE ATT&CK Enterprise v6

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • memory/4376-132-0x0000000000400000-0x0000000000414000-memory.dmp

                                Filesize

                                80KB

                              • memory/4376-133-0x00000000022E0000-0x000000000336E000-memory.dmp

                                Filesize

                                16.6MB

                              • memory/4376-134-0x00000000022E0000-0x000000000336E000-memory.dmp

                                Filesize

                                16.6MB

                              • memory/4376-135-0x00000000022E0000-0x000000000336E000-memory.dmp

                                Filesize

                                16.6MB

                              • memory/4376-136-0x0000000000400000-0x0000000000414000-memory.dmp

                                Filesize

                                80KB