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Analysis

  • max time kernel
    148s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/10/2022, 23:35

General

  • Target

    4b88d171a18f5c8156eea1a1ec3ea8391aa5270a3b622ec2125b42c4e60b0669.exe

  • Size

    382KB

  • MD5

    6e0dbe50fc2413946260ec860ae38baa

  • SHA1

    4ec71f7ed4c69c87b2c9614f0e1b0ba3eadd493f

  • SHA256

    4b88d171a18f5c8156eea1a1ec3ea8391aa5270a3b622ec2125b42c4e60b0669

  • SHA512

    e7ca1981b33aa645fe7d2abe308ef21bc0fe3ba954b9d2cb148afd3cc9d0554b78b235a208af979f24c5f1532cfbca73bffed185a09dddac04aa34ebe4ec055e

  • SSDEEP

    6144:Pnl7w3YXj5OqQhi01bPaf1wNT5Ab6+Qd4YA11azRAZYk0IKDMK6Uv:Pn+3GcJ1bSqdw67A11cRAZnqwh8

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 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.

  • 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\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:796
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:416
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
          PID:2360
        • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
          "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
          1⤵
            PID:3380
          • C:\Windows\system32\backgroundTaskHost.exe
            "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
            1⤵
              PID:4304
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:4860
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:3704
                • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                  1⤵
                    PID:3524
                  • C:\Windows\System32\RuntimeBroker.exe
                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                    1⤵
                      PID:3444
                    • C:\Windows\system32\DllHost.exe
                      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                      1⤵
                        PID:3292
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                        1⤵
                          PID:3084
                        • C:\Windows\Explorer.EXE
                          C:\Windows\Explorer.EXE
                          1⤵
                            PID:760
                            • C:\Users\Admin\AppData\Local\Temp\4b88d171a18f5c8156eea1a1ec3ea8391aa5270a3b622ec2125b42c4e60b0669.exe
                              "C:\Users\Admin\AppData\Local\Temp\4b88d171a18f5c8156eea1a1ec3ea8391aa5270a3b622ec2125b42c4e60b0669.exe"
                              2⤵
                              • Modifies firewall policy service
                              • UAC bypass
                              • Windows security bypass
                              • Windows security modification
                              • Checks whether UAC is enabled
                              • Enumerates connected drives
                              • Drops file in Program Files directory
                              • Drops file in Windows directory
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of WriteProcessMemory
                              • System policy modification
                              PID:1340
                          • C:\Windows\system32\taskhostw.exe
                            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                            1⤵
                              PID:2472
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                              1⤵
                                PID:2388
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:804
                                • C:\Windows\System32\RuntimeBroker.exe
                                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                                  1⤵
                                    PID:4344

                                  Network

                                  MITRE ATT&CK Enterprise v6

                                  Replay Monitor

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                                  Downloads

                                  • memory/1340-132-0x0000000000400000-0x00000000004E0000-memory.dmp

                                    Filesize

                                    896KB

                                  • memory/1340-133-0x00000000023C0000-0x000000000344E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/1340-134-0x00000000023C0000-0x000000000344E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/1340-135-0x0000000000400000-0x00000000004E0000-memory.dmp

                                    Filesize

                                    896KB

                                  • memory/1340-136-0x00000000023C0000-0x000000000344E000-memory.dmp

                                    Filesize

                                    16.6MB