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Analysis

  • max time kernel
    1791s
  • max time network
    1813s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    18-05-2021 13:06

General

  • Target

    keygen-step-4.exe

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
      PID:340
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s SENS
      1⤵
        PID:1408
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s WpnService
        1⤵
          PID:2708
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
          1⤵
            PID:2696
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s Browser
            1⤵
              PID:2580
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
              1⤵
                PID:2448
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
                1⤵
                  PID:2416
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
                  1⤵
                    PID:1936
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                    1⤵
                      PID:1396
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Themes
                      1⤵
                        PID:1144
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                        1⤵
                          PID:1092
                        • c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                          1⤵
                            PID:1036
                          • C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe
                            "C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe"
                            1⤵
                            • Suspicious use of WriteProcessMemory
                            PID:860
                            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
                              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe"
                              2⤵
                              • Executes dropped EXE
                              • Drops file in Program Files directory
                              • Suspicious use of SetWindowsHookEx
                              • Suspicious use of WriteProcessMemory
                              PID:3536
                              • C:\Windows\SysWOW64\rundll32.exe
                                "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                                3⤵
                                • Loads dropped DLL
                                • Modifies registry class
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                • Suspicious use of WriteProcessMemory
                                PID:3736
                            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
                              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe"
                              2⤵
                              • Executes dropped EXE
                              • Suspicious use of AdjustPrivilegeToken
                              PID:3272
                              • C:\Windows\system32\WerFault.exe
                                C:\Windows\system32\WerFault.exe -u -p 3272 -s 620
                                3⤵
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:520
                          • \??\c:\windows\system32\svchost.exe
                            c:\windows\system32\svchost.exe -k netsvcs -s BITS
                            1⤵
                            • Suspicious use of SetThreadContext
                            • Modifies data under HKEY_USERS
                            • Modifies registry class
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:1844
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Modifies registry class
                              PID:2880

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • memory/340-172-0x000001B51D090000-0x000001B51D100000-memory.dmp

                            Filesize

                            448KB

                          • memory/1036-182-0x00000247F60A0000-0x00000247F6110000-memory.dmp

                            Filesize

                            448KB

                          • memory/1092-180-0x000001442DBD0000-0x000001442DC40000-memory.dmp

                            Filesize

                            448KB

                          • memory/1144-188-0x00000194BEDC0000-0x00000194BEE30000-memory.dmp

                            Filesize

                            448KB

                          • memory/1396-190-0x000001DE69B60000-0x000001DE69BD0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1408-184-0x000001B3FEE20000-0x000001B3FEE90000-memory.dmp

                            Filesize

                            448KB

                          • memory/1844-128-0x000002207D750000-0x000002207D79B000-memory.dmp

                            Filesize

                            300KB

                          • memory/1844-133-0x000002207D810000-0x000002207D880000-memory.dmp

                            Filesize

                            448KB

                          • memory/1936-186-0x0000021991E90000-0x0000021991F00000-memory.dmp

                            Filesize

                            448KB

                          • memory/2416-178-0x00000223B0A00000-0x00000223B0A70000-memory.dmp

                            Filesize

                            448KB

                          • memory/2448-176-0x000002D38C340000-0x000002D38C3B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2580-162-0x000001ECF73A0000-0x000001ECF7410000-memory.dmp

                            Filesize

                            448KB

                          • memory/2696-167-0x0000022B03D00000-0x0000022B03D70000-memory.dmp

                            Filesize

                            448KB

                          • memory/2708-173-0x0000022088420000-0x0000022088490000-memory.dmp

                            Filesize

                            448KB

                          • memory/2880-166-0x000001594FE80000-0x000001594FEF0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3272-138-0x0000000002D30000-0x0000000002D31000-memory.dmp

                            Filesize

                            4KB

                          • memory/3272-175-0x000000001BA90000-0x000000001BA92000-memory.dmp

                            Filesize

                            8KB

                          • memory/3272-144-0x0000000002D60000-0x0000000002D61000-memory.dmp

                            Filesize

                            4KB

                          • memory/3272-142-0x0000000002D40000-0x0000000002D5C000-memory.dmp

                            Filesize

                            112KB

                          • memory/3272-130-0x0000000000E70000-0x0000000000E71000-memory.dmp

                            Filesize

                            4KB

                          • memory/3736-131-0x0000000004640000-0x000000000469C000-memory.dmp

                            Filesize

                            368KB

                          • memory/3736-126-0x0000000000D40000-0x0000000000E41000-memory.dmp

                            Filesize

                            1.0MB