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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

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17/06/2021, 21:39

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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
    1800s
  • max time network
    1814s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    25/05/2021, 05:31

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 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 Browser
    1⤵
      PID:2788
    • 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 IKEEXT
          1⤵
            PID:2476
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
              PID:2424
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
              1⤵
                PID:1852
              • 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 Themes
                  1⤵
                    PID:1212
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                    1⤵
                      PID:1204
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                      1⤵
                        PID:1076
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                        1⤵
                          PID:596
                        • 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:636
                            • 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:3940
                              • 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:3108
                            • 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:3416
                              • C:\Windows\system32\WerFault.exe
                                C:\Windows\system32\WerFault.exe -u -p 3416 -s 1304
                                3⤵
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:1336
                          • \??\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:1248
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Modifies registry class
                              PID:3772

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • memory/68-173-0x000001E321F00000-0x000001E321F70000-memory.dmp

                            Filesize

                            448KB

                          • memory/596-150-0x0000019047C60000-0x0000019047CD0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1076-189-0x000001F319E70000-0x000001F319EE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1204-174-0x00000168EFD60000-0x00000168EFDD0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1212-167-0x000001F680D40000-0x000001F680DB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1248-151-0x000001F1906E0000-0x000001F19072B000-memory.dmp

                            Filesize

                            300KB

                          • memory/1248-155-0x000001F1907A0000-0x000001F190810000-memory.dmp

                            Filesize

                            448KB

                          • memory/1404-157-0x00000252C4950000-0x00000252C49C0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1852-162-0x0000028E5AEA0000-0x0000028E5AF10000-memory.dmp

                            Filesize

                            448KB

                          • memory/2424-187-0x000001ACF5A90000-0x000001ACF5B00000-memory.dmp

                            Filesize

                            448KB

                          • memory/2424-143-0x000001ACF51C0000-0x000001ACF51C2000-memory.dmp

                            Filesize

                            8KB

                          • memory/2476-184-0x00000141E4560000-0x00000141E45D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2696-179-0x000001BB25840000-0x000001BB258B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2708-185-0x000001F04BD80000-0x000001F04BDF0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2788-163-0x0000027922B70000-0x0000027922BE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3108-149-0x0000000004480000-0x00000000044DC000-memory.dmp

                            Filesize

                            368KB

                          • memory/3108-147-0x0000000004258000-0x0000000004359000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/3416-131-0x0000000000830000-0x0000000000831000-memory.dmp

                            Filesize

                            4KB

                          • memory/3416-126-0x0000000000120000-0x0000000000121000-memory.dmp

                            Filesize

                            4KB

                          • memory/3416-183-0x000000001AC50000-0x000000001AC52000-memory.dmp

                            Filesize

                            8KB

                          • memory/3416-139-0x0000000000850000-0x0000000000851000-memory.dmp

                            Filesize

                            4KB

                          • memory/3416-136-0x0000000002010000-0x000000000202C000-memory.dmp

                            Filesize

                            112KB

                          • memory/3772-168-0x000002792AA70000-0x000002792AAE0000-memory.dmp

                            Filesize

                            448KB