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Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 01:58

General

  • Target

    snxdx/snxdx/CrackCaptchaAPI.dll

  • Size

    1.4MB

  • MD5

    803ff1fcf41f190b29838246f6f7615c

  • SHA1

    3256620504b7694a98e65c8bb8bad6550035ba66

  • SHA256

    79e965deb85ecd372dbbb5fd9c77867bcb4d5ad6e0c124ccc3ee51358305214d

  • SHA512

    e18b8af2cc617558d248db9d33cd6f10ba27bff9a6dd3ae08acfff21e9f1e7e7966a078c56e939c13e79c7621e37ab1502a73b1292b040133008313d2e19b216

  • SSDEEP

    24576:Rn6WrvFhoN0oXr2HbAR4rMuwKc3QC5fexfduH2FRNEpzvKdYr2TB3AEZ8:RPNet4PWQC5yluHQuzQYSTF3Z

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\lsass.exe
    C:\Windows\system32\lsass.exe
    1⤵
      PID:480
    • C:\Windows\system32\services.exe
      C:\Windows\system32\services.exe
      1⤵
        PID:472
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k RPCSS
          2⤵
            PID:680
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k DcomLaunch
            2⤵
              PID:604
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                3⤵
                  PID:2176
              • C:\Windows\System32\svchost.exe
                C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
                2⤵
                  PID:812
                  • C:\Windows\system32\Dwm.exe
                    "C:\Windows\system32\Dwm.exe"
                    3⤵
                      PID:1168
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k NetworkService
                    2⤵
                      PID:284
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
                      2⤵
                        PID:1060
                      • C:\Windows\System32\spoolsv.exe
                        C:\Windows\System32\spoolsv.exe
                        2⤵
                          PID:332
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalService
                          2⤵
                            PID:968
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k netsvcs
                            2⤵
                              PID:840
                            • C:\Windows\System32\svchost.exe
                              C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
                              2⤵
                                PID:764
                              • C:\Windows\system32\taskhost.exe
                                "taskhost.exe"
                                2⤵
                                  PID:1124
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
                                  2⤵
                                    PID:2264
                                  • C:\Windows\system32\sppsvc.exe
                                    C:\Windows\system32\sppsvc.exe
                                    2⤵
                                      PID:1812
                                  • C:\Windows\system32\winlogon.exe
                                    winlogon.exe
                                    1⤵
                                      PID:424
                                    • C:\Windows\system32\csrss.exe
                                      %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
                                      1⤵
                                        PID:388
                                      • C:\Windows\system32\wininit.exe
                                        wininit.exe
                                        1⤵
                                          PID:372
                                          • C:\Windows\system32\lsm.exe
                                            C:\Windows\system32\lsm.exe
                                            2⤵
                                              PID:488
                                          • C:\Windows\Explorer.EXE
                                            C:\Windows\Explorer.EXE
                                            1⤵
                                              PID:1200
                                              • C:\Windows\system32\rundll32.exe
                                                rundll32.exe C:\Users\Admin\AppData\Local\Temp\snxdx\snxdx\CrackCaptchaAPI.dll,#1
                                                2⤵
                                                • Suspicious use of WriteProcessMemory
                                                PID:2936
                                                • C:\Windows\SysWOW64\rundll32.exe
                                                  rundll32.exe C:\Users\Admin\AppData\Local\Temp\snxdx\snxdx\CrackCaptchaAPI.dll,#1
                                                  3⤵
                                                  • Loads dropped DLL
                                                  • Writes to the Master Boot Record (MBR)
                                                  • Drops file in System32 directory
                                                  • Suspicious use of WriteProcessMemory
                                                  PID:1924
                                                  • C:\Windows\SysWOW64\rundll32Srv.exe
                                                    C:\Windows\SysWOW64\rundll32Srv.exe
                                                    4⤵
                                                    • Executes dropped EXE
                                                    • Drops file in Program Files directory
                                                    • Suspicious behavior: EnumeratesProcesses
                                                    • Suspicious behavior: MapViewOfSection
                                                    • Suspicious use of AdjustPrivilegeToken
                                                    • Suspicious use of WriteProcessMemory
                                                    PID:1756

                                            Network

                                            MITRE ATT&CK Enterprise v15

                                            Replay Monitor

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                                            Downloads

                                            • \Windows\SysWOW64\rundll32Srv.exe

                                              Filesize

                                              74KB

                                              MD5

                                              fcaa38a6fdc673584dcbb74ef6fe70f2

                                              SHA1

                                              19aafcd6ea700210b973a3a6868d7e90f9cd1cf4

                                              SHA256

                                              fbebaa19ad2bdb019d6ab6ddabafc075b902f17462acb15011264f897e932e35

                                              SHA512

                                              f22c785749d705fac922bb9ac037e5955abebfbc4f3a936d4554e23e0b3ce0007597ac4d816eb81ecae5ca50c39a16e7b8d59ec1834dfdc40ebba781a9b5fae8

                                            • memory/1756-13-0x0000000000400000-0x0000000000433000-memory.dmp

                                              Filesize

                                              204KB

                                            • memory/1756-10-0x0000000000400000-0x0000000000433000-memory.dmp

                                              Filesize

                                              204KB

                                            • memory/1924-2-0x0000000074C10000-0x0000000074D8C000-memory.dmp

                                              Filesize

                                              1.5MB

                                            • memory/1924-3-0x0000000074A90000-0x0000000074C0C000-memory.dmp

                                              Filesize

                                              1.5MB

                                            • memory/1924-6-0x0000000074C10000-0x0000000074D8C000-memory.dmp

                                              Filesize

                                              1.5MB

                                            • memory/1924-9-0x0000000074A90000-0x0000000074C0C000-memory.dmp

                                              Filesize

                                              1.5MB

                                            • memory/1924-8-0x0000000000400000-0x0000000000433000-memory.dmp

                                              Filesize

                                              204KB