Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-12-2022 13:05

General

  • Target

    762d1ce203974367165dcab9901851cc976fe43ff8686db72ea67d3d1c663758.exe

  • Size

    168KB

  • MD5

    5d76da041b9b4acf7eeaf6a48c4dd8c2

  • SHA1

    1f027be89bbec9daf9c06a6012a3364de8b9e224

  • SHA256

    762d1ce203974367165dcab9901851cc976fe43ff8686db72ea67d3d1c663758

  • SHA512

    aa1e706610c3d7717829cafc4306d6c286f495b6c76e09b5202e23ffd41d41eb24034b065002cdaa5e0538b5c24761617d072c610ee645fec1adbcdf2bc9d47d

  • SSDEEP

    3072:cNQKPWDy+I01JltZrpR32dckneLNY6I5hkABLx:cNSDy+IathpmckeLeXhk6Lx

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 2 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 26 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:760
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:1008
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
        1⤵
          PID:2820
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
          1⤵
            PID:3088
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3444
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:4688
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:3732
                • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                  1⤵
                    PID:3532
                  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                    1⤵
                      PID:3372
                    • C:\Windows\system32\DllHost.exe
                      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                      1⤵
                        PID:3288
                      • C:\Windows\Explorer.EXE
                        C:\Windows\Explorer.EXE
                        1⤵
                          PID:600
                          • C:\Users\Admin\AppData\Local\Temp\762d1ce203974367165dcab9901851cc976fe43ff8686db72ea67d3d1c663758.exe
                            "C:\Users\Admin\AppData\Local\Temp\762d1ce203974367165dcab9901851cc976fe43ff8686db72ea67d3d1c663758.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:3724
                            • C:\Windows\SysWOW64\netsh.exe
                              netsh firewall set opmode disable
                              3⤵
                              • Modifies Windows Firewall
                              PID:2004
                            • C:\Windows\SysWOW64\NOTEPAD.EXE
                              "C:\Windows\system32\NOTEPAD.EXE"
                              3⤵
                                PID:4208
                              • C:\Windows\SysWOW64\NOTEPAD.EXE
                                "C:\Windows\system32\NOTEPAD.EXE"
                                3⤵
                                  PID:1976
                                • C:\Windows\SysWOW64\NOTEPAD.EXE
                                  "C:\Windows\system32\NOTEPAD.EXE"
                                  3⤵
                                    PID:3396
                                  • C:\Windows\SysWOW64\NOTEPAD.EXE
                                    "C:\Windows\system32\NOTEPAD.EXE"
                                    3⤵
                                      PID:3768
                                • C:\Windows\system32\taskhostw.exe
                                  taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                                  1⤵
                                    PID:2872
                                  • C:\Windows\system32\sihost.exe
                                    sihost.exe
                                    1⤵
                                      PID:2780
                                    • C:\Windows\system32\fontdrvhost.exe
                                      "fontdrvhost.exe"
                                      1⤵
                                        PID:768

                                      Network

                                      MITRE ATT&CK Enterprise v6

                                      Replay Monitor

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                                      Downloads

                                      • memory/1976-139-0x0000000000E00000-0x0000000000E17000-memory.dmp

                                        Filesize

                                        92KB

                                      • memory/3396-141-0x0000000000B40000-0x0000000000B57000-memory.dmp

                                        Filesize

                                        92KB

                                      • memory/3724-132-0x0000000002440000-0x0000000003473000-memory.dmp

                                        Filesize

                                        16.2MB

                                      • memory/3724-133-0x0000000001000000-0x0000000001027000-memory.dmp

                                        Filesize

                                        156KB

                                      • memory/3724-135-0x0000000002440000-0x0000000003473000-memory.dmp

                                        Filesize

                                        16.2MB

                                      • memory/3768-143-0x0000000000B80000-0x0000000000B97000-memory.dmp

                                        Filesize

                                        92KB

                                      • memory/4208-137-0x0000000000B30000-0x0000000000B47000-memory.dmp

                                        Filesize

                                        92KB