Analysis

  • max time kernel
    142s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2022, 19:08

General

  • Target

    3ebf754acea1b81cfab8358bd92173389ce402e911af6f98b11a419b9e95a7dc.exe

  • Size

    379KB

  • MD5

    06ef6a37753f366ed7107e64cc072690

  • SHA1

    e7fc48232ce94aa6c574bcc179d59d556063f62b

  • SHA256

    3ebf754acea1b81cfab8358bd92173389ce402e911af6f98b11a419b9e95a7dc

  • SHA512

    8228eb35f4ea00af964be4ac3fcdad94bff4865c819dc447060021698d08c6d3aa940591b9fac8d2c92195890727d0280aa61b16047bd5e6483322c46a432fb1

  • SSDEEP

    6144:Mmie2t3VsUScBKgszvitP84nioG/jXdVmkmmBYu+T3mWsQgR:dq3mrcBKgsbiz4ukmxWW6R

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

  • 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
  • Downloads MZ/PE file
  • 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
  • Enumerates connected drives 3 TTPs 15 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:780
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:784
      • C:\Windows\system32\dwm.exe
        "dwm.exe"
        1⤵
          PID:312
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:2500
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
            1⤵
              PID:2648
            • C:\Windows\system32\taskhostw.exe
              taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
              1⤵
                PID:2868
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                1⤵
                  PID:3252
                • C:\Windows\System32\RuntimeBroker.exe
                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                  1⤵
                    PID:3420
                  • C:\Windows\System32\RuntimeBroker.exe
                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                    1⤵
                      PID:3712
                    • C:\Windows\System32\RuntimeBroker.exe
                      C:\Windows\System32\RuntimeBroker.exe -Embedding
                      1⤵
                        PID:4708
                      • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                        "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                        1⤵
                          PID:3500
                        • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                          "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                          1⤵
                            PID:3356
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                            1⤵
                              PID:2668
                            • C:\Windows\Explorer.EXE
                              C:\Windows\Explorer.EXE
                              1⤵
                                PID:2220
                                • C:\Users\Admin\AppData\Local\Temp\3ebf754acea1b81cfab8358bd92173389ce402e911af6f98b11a419b9e95a7dc.exe
                                  "C:\Users\Admin\AppData\Local\Temp\3ebf754acea1b81cfab8358bd92173389ce402e911af6f98b11a419b9e95a7dc.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:3044

                              Network

                              MITRE ATT&CK Enterprise v6

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • memory/3044-132-0x0000000002370000-0x000000000342A000-memory.dmp

                                Filesize

                                16.7MB

                              • memory/3044-133-0x0000000000400000-0x0000000000463000-memory.dmp

                                Filesize

                                396KB

                              • memory/3044-134-0x0000000002370000-0x000000000342A000-memory.dmp

                                Filesize

                                16.7MB

                              • memory/3044-135-0x0000000002370000-0x000000000342A000-memory.dmp

                                Filesize

                                16.7MB

                              • memory/3044-136-0x0000000000400000-0x0000000000463000-memory.dmp

                                Filesize

                                396KB

                              • memory/3044-137-0x0000000002370000-0x000000000342A000-memory.dmp

                                Filesize

                                16.7MB