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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

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

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08/06/2021, 06:47

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05/06/2021, 18:40

210605-cd6qpr55sx 10

04/06/2021, 11:56

210604-5c416rs3ns 10

Analysis

  • max time kernel
    1797s
  • max time network
    1804s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    17/05/2021, 12:14

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 WpnService
    1⤵
      PID:2820
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
      1⤵
        PID:2800
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Browser
        1⤵
          PID:2748
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
          1⤵
            PID:2572
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
            1⤵
              PID:2536
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
              1⤵
                PID:1900
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s SENS
                1⤵
                  PID:1448
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s Themes
                  1⤵
                    PID:1292
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                    1⤵
                      PID:1216
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                      1⤵
                        PID:1088
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                        1⤵
                          PID:296
                        • c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                          1⤵
                            PID:352
                          • 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:1108
                            • 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:3188
                              • 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:3468
                            • 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:1160
                              • C:\Windows\system32\WerFault.exe
                                C:\Windows\system32\WerFault.exe -u -p 1160 -s 1344
                                3⤵
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:1680
                          • \??\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:1592
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Modifies registry class
                              PID:3816

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • memory/296-178-0x00000285668D0000-0x0000028566940000-memory.dmp

                            Filesize

                            448KB

                          • memory/352-143-0x0000022296760000-0x00000222967D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1088-162-0x0000012A8AC90000-0x0000012A8AD00000-memory.dmp

                            Filesize

                            448KB

                          • memory/1160-141-0x0000000000740000-0x0000000000741000-memory.dmp

                            Filesize

                            4KB

                          • memory/1160-126-0x0000000000110000-0x0000000000111000-memory.dmp

                            Filesize

                            4KB

                          • memory/1160-130-0x0000000000710000-0x0000000000711000-memory.dmp

                            Filesize

                            4KB

                          • memory/1160-136-0x0000000000720000-0x000000000073C000-memory.dmp

                            Filesize

                            112KB

                          • memory/1160-144-0x000000001ACD0000-0x000000001ACD2000-memory.dmp

                            Filesize

                            8KB

                          • memory/1216-186-0x000001CC1B480000-0x000001CC1B4F0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1292-184-0x000001DB90AD0000-0x000001DB90B40000-memory.dmp

                            Filesize

                            448KB

                          • memory/1448-180-0x0000023482C40000-0x0000023482CB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1592-150-0x000002600E250000-0x000002600E2C0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1900-182-0x00000236FF230000-0x00000236FF2A0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2536-146-0x00000273A6970000-0x00000273A69BB000-memory.dmp

                            Filesize

                            300KB

                          • memory/2536-149-0x00000273A7010000-0x00000273A7080000-memory.dmp

                            Filesize

                            448KB

                          • memory/2572-156-0x0000018CA98A0000-0x0000018CA9910000-memory.dmp

                            Filesize

                            448KB

                          • memory/2748-155-0x000001D431880000-0x000001D4318F0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2800-175-0x00000287E7820000-0x00000287E7822000-memory.dmp

                            Filesize

                            8KB

                          • memory/2800-188-0x00000287E7EA0000-0x00000287E7F10000-memory.dmp

                            Filesize

                            448KB

                          • memory/2820-190-0x000001BDD4D40000-0x000001BDD4DB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3468-142-0x00000000045D0000-0x000000000462C000-memory.dmp

                            Filesize

                            368KB

                          • memory/3468-137-0x0000000000DC1000-0x0000000000EC2000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/3816-139-0x000001B848400000-0x000001B848470000-memory.dmp

                            Filesize

                            448KB