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12-11-2024 01:29

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04-06-2021 11:56

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Analysis

  • max time kernel
    1792s
  • max time network
    1804s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    15-05-2021 10:18

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 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 ProfSvc
    1⤵
      PID:1148
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
      1⤵
        PID:2272
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s WpnService
        1⤵
          PID:2436
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s Browser
          1⤵
            PID:2656
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
            1⤵
              PID:2428
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2320
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
              1⤵
                PID:1864
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s SENS
                1⤵
                  PID:1456
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                  1⤵
                    PID:1396
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s Themes
                    1⤵
                      PID:1288
                    • 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 gpsvc
                        1⤵
                          PID:352
                        • 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:648
                          • 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:3856
                            • 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:3248
                          • 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:820
                            • C:\Windows\system32\WerFault.exe
                              C:\Windows\system32\WerFault.exe -u -p 820 -s 1316
                              3⤵
                              • Program crash
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              PID:4056
                        • \??\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:3104

                        Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • memory/352-176-0x000001F963240000-0x000001F9632B0000-memory.dmp

                          Filesize

                          448KB

                        • memory/820-141-0x0000000000F80000-0x0000000000F81000-memory.dmp

                          Filesize

                          4KB

                        • memory/820-138-0x0000000001230000-0x000000000124C000-memory.dmp

                          Filesize

                          112KB

                        • memory/820-177-0x0000000002B20000-0x0000000002B22000-memory.dmp

                          Filesize

                          8KB

                        • memory/820-128-0x0000000000970000-0x0000000000971000-memory.dmp

                          Filesize

                          4KB

                        • memory/820-132-0x0000000000F70000-0x0000000000F71000-memory.dmp

                          Filesize

                          4KB

                        • memory/1064-185-0x000001B747B10000-0x000001B747B80000-memory.dmp

                          Filesize

                          448KB

                        • memory/1148-183-0x000001EB44680000-0x000001EB446F0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1288-158-0x0000027BB06A0000-0x0000027BB0710000-memory.dmp

                          Filesize

                          448KB

                        • memory/1396-164-0x000001F47A300000-0x000001F47A370000-memory.dmp

                          Filesize

                          448KB

                        • memory/1456-187-0x00000297D0190000-0x00000297D0200000-memory.dmp

                          Filesize

                          448KB

                        • memory/1592-155-0x0000029C4EFA0000-0x0000029C4EFEB000-memory.dmp

                          Filesize

                          300KB

                        • memory/1592-157-0x0000029C4F060000-0x0000029C4F0D0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1864-189-0x000002B3A9F80000-0x000002B3A9FF0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2272-179-0x000001A2C5780000-0x000001A2C57F0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2320-181-0x0000016250BD0000-0x0000016250C40000-memory.dmp

                          Filesize

                          448KB

                        • memory/2428-170-0x0000029E4CC30000-0x0000029E4CCA0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2436-175-0x0000026CBD570000-0x0000026CBD5E0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2656-165-0x000001C2C16D0000-0x000001C2C1740000-memory.dmp

                          Filesize

                          448KB

                        • memory/3104-169-0x0000022271E70000-0x0000022271EE0000-memory.dmp

                          Filesize

                          448KB

                        • memory/3248-127-0x0000000003380000-0x00000000033DC000-memory.dmp

                          Filesize

                          368KB

                        • memory/3248-126-0x000000000308D000-0x000000000318E000-memory.dmp

                          Filesize

                          1.0MB