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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

210611-wvab1yw2tj 10

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
    1798s
  • max time network
    1807s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    16/05/2021, 11:05

General

  • Target

    keygen-step-4d.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 Themes
    1⤵
      PID:1224
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s UserManager
      1⤵
        PID:1296
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s SENS
        1⤵
          PID:1440
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
          1⤵
            PID:1108
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s Schedule
            1⤵
              PID:1064
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s Browser
              1⤵
                PID:2740
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s WpnService
                1⤵
                  PID:2724
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
                  1⤵
                    PID:2700
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
                    1⤵
                      PID:2544
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
                      1⤵
                        PID:2464
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
                        1⤵
                          PID:1992
                        • 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-4d.exe
                            "C:\Users\Admin\AppData\Local\Temp\keygen-step-4d.exe"
                            1⤵
                            • Suspicious use of WriteProcessMemory
                            PID:652
                            • 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:3168
                              • 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:3380
                            • 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:2736
                              • C:\Windows\system32\WerFault.exe
                                C:\Windows\system32\WerFault.exe -u -p 2736 -s 1304
                                3⤵
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:1928
                          • \??\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:848
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Modifies registry class
                              PID:2680

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • memory/340-169-0x000001A14E380000-0x000001A14E3F0000-memory.dmp

                            Filesize

                            448KB

                          • memory/848-134-0x000001CD76B30000-0x000001CD76B32000-memory.dmp

                            Filesize

                            8KB

                          • memory/848-164-0x000001CD76E70000-0x000001CD76EE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/848-163-0x000001CD76AE0000-0x000001CD76B2B000-memory.dmp

                            Filesize

                            300KB

                          • memory/1064-178-0x000001E1F2B70000-0x000001E1F2BE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1108-176-0x000001FE3EC70000-0x000001FE3ECE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1224-184-0x00000220C3B70000-0x00000220C3BE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1296-186-0x0000021A3CEC0000-0x0000021A3CF30000-memory.dmp

                            Filesize

                            448KB

                          • memory/1440-180-0x0000029F58ED0000-0x0000029F58F40000-memory.dmp

                            Filesize

                            448KB

                          • memory/1992-182-0x000001B4ED2B0000-0x000001B4ED320000-memory.dmp

                            Filesize

                            448KB

                          • memory/2464-174-0x000001EFDC930000-0x000001EFDC9A0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2544-172-0x000001E8ED360000-0x000001E8ED3D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2680-170-0x000001DFBCC00000-0x000001DFBCC70000-memory.dmp

                            Filesize

                            448KB

                          • memory/2700-188-0x000001A596F10000-0x000001A596F80000-memory.dmp

                            Filesize

                            448KB

                          • memory/2724-190-0x000001C9017D0000-0x000001C901840000-memory.dmp

                            Filesize

                            448KB

                          • memory/2736-132-0x0000000001380000-0x0000000001381000-memory.dmp

                            Filesize

                            4KB

                          • memory/2736-162-0x000000001B960000-0x000000001B962000-memory.dmp

                            Filesize

                            8KB

                          • memory/2736-131-0x00000000013A0000-0x00000000013BC000-memory.dmp

                            Filesize

                            112KB

                          • memory/2736-130-0x0000000001370000-0x0000000001371000-memory.dmp

                            Filesize

                            4KB

                          • memory/2736-126-0x0000000000C60000-0x0000000000C61000-memory.dmp

                            Filesize

                            4KB

                          • memory/2740-166-0x000002812EB30000-0x000002812EBA0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3380-129-0x00000000045A0000-0x00000000045FC000-memory.dmp

                            Filesize

                            368KB

                          • memory/3380-128-0x00000000043D5000-0x00000000044D6000-memory.dmp

                            Filesize

                            1.0MB