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Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2022, 19:26

General

  • Target

    2d9cfd337ba510369c7f235b9c058805051c8d298d168af74bd8c3f557e37852.exe

  • Size

    168KB

  • MD5

    76f053e92693ff04a47d06fff4b37806

  • SHA1

    75a371937353f3c8decb1ace10a0a71bbd1c1078

  • SHA256

    2d9cfd337ba510369c7f235b9c058805051c8d298d168af74bd8c3f557e37852

  • SHA512

    f599f9cc94131a1e4f9268b335a626968f5015e9f2e56cb3d7b8ccb6a3911fa7cf0100d3146096ae21caf14e1f00ab7bbd79d21d5574db7ef8bda5c5fc6200ad

  • SSDEEP

    3072:BNQKPWDyiI0/JltZrpRpc8/XPV3cvbBI4eM:BNSDyiIAthpHcFI4eM

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

Signatures

  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Modifies Windows Firewall 1 TTPs 1 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
  • 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:3412
    • C:\Windows\system32\backgroundTaskHost.exe
      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
      1⤵
        PID:3328
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:4628
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3680
          • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
            "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
            1⤵
              PID:3496
            • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
              "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
              1⤵
                PID:3344
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                1⤵
                  PID:3252
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                  1⤵
                    PID:368
                  • C:\Windows\Explorer.EXE
                    C:\Windows\Explorer.EXE
                    1⤵
                      PID:2348
                      • C:\Users\Admin\AppData\Local\Temp\2d9cfd337ba510369c7f235b9c058805051c8d298d168af74bd8c3f557e37852.exe
                        "C:\Users\Admin\AppData\Local\Temp\2d9cfd337ba510369c7f235b9c058805051c8d298d168af74bd8c3f557e37852.exe"
                        2⤵
                        • UAC bypass
                        • Windows security bypass
                        • Disables RegEdit via registry modification
                        • Windows security modification
                        • Checks whether UAC is enabled
                        • 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:4264
                        • C:\Windows\SysWOW64\netsh.exe
                          netsh firewall set opmode disable
                          3⤵
                          • Modifies Windows Firewall
                          PID:4396
                          • C:\Windows\System32\Conhost.exe
                            \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                            4⤵
                              PID:4904
                          • C:\Windows\SysWOW64\NOTEPAD.EXE
                            "C:\Windows\system32\NOTEPAD.EXE"
                            3⤵
                              PID:1012
                            • C:\Windows\SysWOW64\NOTEPAD.EXE
                              "C:\Windows\system32\NOTEPAD.EXE"
                              3⤵
                                PID:4036
                              • C:\Windows\SysWOW64\NOTEPAD.EXE
                                "C:\Windows\system32\NOTEPAD.EXE"
                                3⤵
                                  PID:3904
                                • C:\Windows\SysWOW64\NOTEPAD.EXE
                                  "C:\Windows\system32\NOTEPAD.EXE"
                                  3⤵
                                    PID:3016
                              • C:\Windows\system32\taskhostw.exe
                                taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                                1⤵
                                  PID:2604
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                                  1⤵
                                    PID:2512
                                  • C:\Windows\system32\sihost.exe
                                    sihost.exe
                                    1⤵
                                      PID:2504
                                    • C:\Windows\system32\dwm.exe
                                      "dwm.exe"
                                      1⤵
                                        PID:384
                                      • C:\Windows\system32\fontdrvhost.exe
                                        "fontdrvhost.exe"
                                        1⤵
                                          PID:804
                                        • C:\Windows\system32\fontdrvhost.exe
                                          "fontdrvhost.exe"
                                          1⤵
                                            PID:800
                                          • C:\Windows\System32\RuntimeBroker.exe
                                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                                            1⤵
                                              PID:4564

                                            Network

                                            MITRE ATT&CK Enterprise v6

                                            Replay Monitor

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                                            Downloads

                                            • memory/1012-138-0x0000000000E70000-0x0000000000E87000-memory.dmp

                                              Filesize

                                              92KB

                                            • memory/3016-144-0x0000000000660000-0x0000000000677000-memory.dmp

                                              Filesize

                                              92KB

                                            • memory/3904-142-0x0000000000790000-0x00000000007A7000-memory.dmp

                                              Filesize

                                              92KB

                                            • memory/4036-140-0x0000000000F40000-0x0000000000F57000-memory.dmp

                                              Filesize

                                              92KB

                                            • memory/4264-136-0x0000000002440000-0x0000000003473000-memory.dmp

                                              Filesize

                                              16.2MB

                                            • memory/4264-135-0x0000000002440000-0x0000000003473000-memory.dmp

                                              Filesize

                                              16.2MB

                                            • memory/4264-132-0x0000000001000000-0x0000000001026000-memory.dmp

                                              Filesize

                                              152KB

                                            • memory/4264-133-0x0000000002440000-0x0000000003473000-memory.dmp

                                              Filesize

                                              16.2MB

                                            • memory/4264-145-0x0000000001000000-0x0000000001026000-memory.dmp

                                              Filesize

                                              152KB