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12/11/2024, 01:29

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06/07/2021, 17:53

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Analysis

  • max time kernel
    59s
  • max time network
    66s
  • 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 2 IoCs
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 19 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 Winmgmt
    1⤵
      PID:2852
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s WpnService
      1⤵
        PID:2836
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Browser
        1⤵
          PID:2756
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
          1⤵
            PID:2608
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2576
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
            1⤵
              PID:1908
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s SENS
              1⤵
                PID:1428
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                1⤵
                  PID:1376
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s Themes
                  1⤵
                    PID:1180
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                    1⤵
                      PID:1096
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                      1⤵
                        PID:68
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                        1⤵
                          PID:340
                        • 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:900
                          • 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:3952
                            • 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:3664
                          • 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:3660
                            • C:\Windows\system32\WerFault.exe
                              C:\Windows\system32\WerFault.exe -u -p 3660 -s 1304
                              3⤵
                              • Program crash
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              PID:3020
                        • \??\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:1520
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k SystemNetworkService
                            2⤵
                            • Modifies registry class
                            PID:508

                        Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • memory/68-178-0x0000027FAC210000-0x0000027FAC280000-memory.dmp

                          Filesize

                          448KB

                        • memory/340-148-0x0000026116740000-0x00000261167B0000-memory.dmp

                          Filesize

                          448KB

                        • memory/508-144-0x000001993BB00000-0x000001993BB70000-memory.dmp

                          Filesize

                          448KB

                        • memory/1096-176-0x0000029F00770000-0x0000029F007E0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1180-184-0x0000026034FB0000-0x0000026035020000-memory.dmp

                          Filesize

                          448KB

                        • memory/1376-186-0x000002AD6F400000-0x000002AD6F470000-memory.dmp

                          Filesize

                          448KB

                        • memory/1428-180-0x000001F56A200000-0x000001F56A270000-memory.dmp

                          Filesize

                          448KB

                        • memory/1520-131-0x000002B252B60000-0x000002B252BD0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1908-182-0x000001430C400000-0x000001430C470000-memory.dmp

                          Filesize

                          448KB

                        • memory/2576-174-0x00000154C7CD0000-0x00000154C7D40000-memory.dmp

                          Filesize

                          448KB

                        • memory/2608-153-0x000002209B490000-0x000002209B500000-memory.dmp

                          Filesize

                          448KB

                        • memory/2756-142-0x0000028AEBFA0000-0x0000028AEC010000-memory.dmp

                          Filesize

                          448KB

                        • memory/2756-136-0x0000028AEB900000-0x0000028AEB94B000-memory.dmp

                          Filesize

                          300KB

                        • memory/2836-190-0x000001B333A40000-0x000001B333AB0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2852-188-0x000001D2CBB40000-0x000001D2CBBB0000-memory.dmp

                          Filesize

                          448KB

                        • memory/3660-146-0x0000000001310000-0x0000000001311000-memory.dmp

                          Filesize

                          4KB

                        • memory/3660-133-0x00000000012E0000-0x00000000012E1000-memory.dmp

                          Filesize

                          4KB

                        • memory/3660-152-0x000000001B6E0000-0x000000001B6E2000-memory.dmp

                          Filesize

                          8KB

                        • memory/3660-140-0x00000000012F0000-0x000000000130C000-memory.dmp

                          Filesize

                          112KB

                        • memory/3660-126-0x0000000000BC0000-0x0000000000BC1000-memory.dmp

                          Filesize

                          4KB

                        • memory/3664-130-0x000000000498A000-0x0000000004A8B000-memory.dmp

                          Filesize

                          1.0MB

                        • memory/3664-132-0x0000000004BF0000-0x0000000004C4C000-memory.dmp

                          Filesize

                          368KB