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12/11/2024, 01:29

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Analysis

  • max time kernel
    1797s
  • max time network
    1804s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27/05/2021, 20:06

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 1 IoCs
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 21 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 WpnService
    1⤵
      PID:2812
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
      1⤵
        PID:2796
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Browser
        1⤵
          PID:2704
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
          1⤵
            PID:2532
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
              PID:2512
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
              1⤵
                PID:1952
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s SENS
                1⤵
                  PID:1404
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                  1⤵
                    PID:1348
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s Themes
                    1⤵
                      PID:1188
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                      1⤵
                        PID:1064
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                        1⤵
                          PID:492
                        • c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                          1⤵
                            PID:68
                          • 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:4804
                            • 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:3200
                              • 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:4180
                            • 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:4168
                              • C:\Windows\system32\WerFault.exe
                                C:\Windows\system32\WerFault.exe -u -p 4168 -s 1328
                                3⤵
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:4740
                          • \??\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:4852
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Modifies registry class
                              PID:904

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

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                          Downloads

                          • memory/68-180-0x000001538CF40000-0x000001538CFB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/492-189-0x000002449EB50000-0x000002449EBC0000-memory.dmp

                            Filesize

                            448KB

                          • memory/904-181-0x000001D5ECF00000-0x000001D5ECF70000-memory.dmp

                            Filesize

                            448KB

                          • memory/1064-187-0x000001C9E5CB0000-0x000001C9E5D20000-memory.dmp

                            Filesize

                            448KB

                          • memory/1188-163-0x0000016ABBB60000-0x0000016ABBBD0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1348-168-0x000001ECA7760000-0x000001ECA77D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1404-152-0x0000023008710000-0x0000023008780000-memory.dmp

                            Filesize

                            448KB

                          • memory/1952-157-0x000001EF56680000-0x000001EF566F0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1952-154-0x000001EF563A0000-0x000001EF563EB000-memory.dmp

                            Filesize

                            300KB

                          • memory/2512-185-0x000002D49CC60000-0x000002D49CCD0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2532-183-0x000001CB8D8A0000-0x000001CB8D910000-memory.dmp

                            Filesize

                            448KB

                          • memory/2704-178-0x0000020358B70000-0x0000020358BE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2796-172-0x000001F588210000-0x000001F588280000-memory.dmp

                            Filesize

                            448KB

                          • memory/2812-177-0x000001CCD1970000-0x000001CCD19E0000-memory.dmp

                            Filesize

                            448KB

                          • memory/4168-167-0x000000001B650000-0x000000001B652000-memory.dmp

                            Filesize

                            8KB

                          • memory/4168-130-0x0000000001080000-0x0000000001081000-memory.dmp

                            Filesize

                            4KB

                          • memory/4168-129-0x0000000000E90000-0x0000000000EAC000-memory.dmp

                            Filesize

                            112KB

                          • memory/4168-128-0x0000000000E80000-0x0000000000E81000-memory.dmp

                            Filesize

                            4KB

                          • memory/4168-126-0x0000000000A40000-0x0000000000A41000-memory.dmp

                            Filesize

                            4KB

                          • memory/4180-151-0x0000000004860000-0x00000000048BC000-memory.dmp

                            Filesize

                            368KB

                          • memory/4180-148-0x0000000004631000-0x0000000004732000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/4852-160-0x00000295F17C0000-0x00000295F1830000-memory.dmp

                            Filesize

                            448KB