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Resubmissions

12/11/2024, 01:29

241112-bwgrxs1gnf 10

08/07/2021, 12:18

210708-8z6d5h8z2n 10

06/07/2021, 17:53

210706-g6we6sa7sa 10

19/06/2021, 18:17

210619-vr8bj2dzfn 10

17/06/2021, 21:39

210617-a9cvlnmrbx 10

11/06/2021, 17:26

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08/06/2021, 06:47

210608-qrbpch3y46 10

08/06/2021, 06:47

210608-64tndgm1ln 10

05/06/2021, 18:40

210605-cd6qpr55sx 10

04/06/2021, 11:56

210604-5c416rs3ns 10

Analysis

  • max time kernel
    1793s
  • max time network
    1799s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    17/05/2021, 12:14

General

  • Target

    keygen-step-4.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

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 ProfSvc
    1⤵
      PID:1072
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
      1⤵
        PID:1848
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
        1⤵
          PID:2516
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s SENS
          1⤵
            PID:1388
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
              PID:2528
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s Browser
              1⤵
                PID:2772
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s WpnService
                1⤵
                  PID:2804
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
                  1⤵
                    PID:2788
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                    1⤵
                      PID:1280
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Themes
                      1⤵
                        PID:1204
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                        1⤵
                          PID:684
                        • 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:624
                            • 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:1784
                              • 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:2952
                            • 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:3996
                              • C:\Windows\system32\WerFault.exe
                                C:\Windows\system32\WerFault.exe -u -p 3996 -s 1284
                                3⤵
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:2892
                          • \??\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:992
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Modifies registry class
                              PID:2164

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • memory/68-175-0x00000178CDD60000-0x00000178CDDD0000-memory.dmp

                            Filesize

                            448KB

                          • memory/684-184-0x0000024816010000-0x0000024816080000-memory.dmp

                            Filesize

                            448KB

                          • memory/992-164-0x0000014C1F3F0000-0x0000014C1F460000-memory.dmp

                            Filesize

                            448KB

                          • memory/1072-182-0x00000207F6760000-0x00000207F67D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1204-190-0x000001CC611B0000-0x000001CC61220000-memory.dmp

                            Filesize

                            448KB

                          • memory/1280-157-0x000001CC3F900000-0x000001CC3F94B000-memory.dmp

                            Filesize

                            300KB

                          • memory/1280-160-0x000001CC40060000-0x000001CC400D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1388-186-0x000001263AA70000-0x000001263AAE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1848-188-0x00000200F0B20000-0x00000200F0B90000-memory.dmp

                            Filesize

                            448KB

                          • memory/2164-176-0x00000291C7B00000-0x00000291C7B70000-memory.dmp

                            Filesize

                            448KB

                          • memory/2516-178-0x00000238D2D40000-0x00000238D2DB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2528-180-0x00000215CCC40000-0x00000215CCCB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2772-173-0x00000292630C0000-0x0000029263130000-memory.dmp

                            Filesize

                            448KB

                          • memory/2788-165-0x00000264C0390000-0x00000264C0400000-memory.dmp

                            Filesize

                            448KB

                          • memory/2804-169-0x0000028F1D900000-0x0000028F1D970000-memory.dmp

                            Filesize

                            448KB

                          • memory/2952-155-0x0000000004FF0000-0x000000000504C000-memory.dmp

                            Filesize

                            368KB

                          • memory/2952-154-0x0000000004E2E000-0x0000000004F2F000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/3996-130-0x0000000000E40000-0x0000000000E41000-memory.dmp

                            Filesize

                            4KB

                          • memory/3996-129-0x0000000000E20000-0x0000000000E3C000-memory.dmp

                            Filesize

                            112KB

                          • memory/3996-128-0x0000000000E10000-0x0000000000E11000-memory.dmp

                            Filesize

                            4KB

                          • memory/3996-126-0x0000000000700000-0x0000000000701000-memory.dmp

                            Filesize

                            4KB

                          • memory/3996-171-0x000000001B1E0000-0x000000001B1E2000-memory.dmp

                            Filesize

                            8KB