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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

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
    1795s
  • max time network
    1813s
  • 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 2 IoCs
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 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:2836
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s WpnService
      1⤵
        PID:2764
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
        1⤵
          PID:2708
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
          1⤵
            PID:2492
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2448
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
            1⤵
              PID:1820
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s SENS
              1⤵
                PID:1408
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                1⤵
                  PID:1232
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s Themes
                  1⤵
                    PID:1192
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                    1⤵
                      PID:1056
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                      1⤵
                        PID:788
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                        1⤵
                          PID:1004
                        • 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:2544
                          • 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:1264
                            • 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:2432
                          • 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:2756
                            • C:\Windows\system32\WerFault.exe
                              C:\Windows\system32\WerFault.exe -u -p 2756 -s 1304
                              3⤵
                              • Program crash
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              PID:2696
                        • \??\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:1840
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k SystemNetworkService
                            2⤵
                            • Modifies registry class
                            PID:2916

                        Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • memory/788-179-0x0000020AD6A60000-0x0000020AD6AD0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1004-170-0x000001FFF5D60000-0x000001FFF5DD0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1056-177-0x00000230BB2D0000-0x00000230BB340000-memory.dmp

                          Filesize

                          448KB

                        • memory/1192-185-0x0000020BD2980000-0x0000020BD29F0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1232-187-0x0000015608570000-0x00000156085E0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1408-181-0x00000169715D0000-0x0000016971640000-memory.dmp

                          Filesize

                          448KB

                        • memory/1820-183-0x000002C8A8710000-0x000002C8A8780000-memory.dmp

                          Filesize

                          448KB

                        • memory/1840-133-0x0000026C182A0000-0x0000026C18310000-memory.dmp

                          Filesize

                          448KB

                        • memory/1840-128-0x0000026C181E0000-0x0000026C1822B000-memory.dmp

                          Filesize

                          300KB

                        • memory/2432-131-0x0000000004F00000-0x0000000004F5C000-memory.dmp

                          Filesize

                          368KB

                        • memory/2432-126-0x0000000004C7E000-0x0000000004D7F000-memory.dmp

                          Filesize

                          1.0MB

                        • memory/2448-175-0x000001B955C80000-0x000001B955CF0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2492-173-0x000001A97E140000-0x000001A97E1B0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2708-189-0x000002A601B80000-0x000002A601BF0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2756-138-0x0000000000B10000-0x0000000000B11000-memory.dmp

                          Filesize

                          4KB

                        • memory/2756-172-0x000000001B3C0000-0x000000001B3C2000-memory.dmp

                          Filesize

                          8KB

                        • memory/2756-144-0x0000000000B40000-0x0000000000B41000-memory.dmp

                          Filesize

                          4KB

                        • memory/2756-142-0x0000000000B20000-0x0000000000B3C000-memory.dmp

                          Filesize

                          112KB

                        • memory/2756-130-0x00000000006C0000-0x00000000006C1000-memory.dmp

                          Filesize

                          4KB

                        • memory/2764-168-0x0000017A3EE90000-0x0000017A3EF00000-memory.dmp

                          Filesize

                          448KB

                        • memory/2764-166-0x0000017A3E670000-0x0000017A3E672000-memory.dmp

                          Filesize

                          8KB

                        • memory/2836-165-0x000001FE52570000-0x000001FE525E0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2916-167-0x000001EAB7E00000-0x000001EAB7E70000-memory.dmp

                          Filesize

                          448KB