Analysis

  • max time kernel
    162s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    12/10/2022, 14:03

General

  • Target
    file.exe
  • Size 7.2MB
  • Sample221012-rcpanaeehr
  • SHA256 d9946517b93a6e1c8a5330a312c555f86df523380688c35466917908abb39923
  • 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 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:1904
    • C:\Users\Admin\AppData\Local\Temp\7zSA1F.tmp\Install.exe
      .\Install.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1704
      • C:\Users\Admin\AppData\Local\Temp\7zSF5D.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:1216
        • 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:896
          • 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:1688
            • \??\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:1760
              • \??\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:1900
            • 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:628
              • 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:1944
                • \??\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:1308
                  • \??\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:1908
                • C:\Windows\SysWOW64\schtasks.exe
                  schtasks /CREATE /TN "gVchXDETP" /SC once /ST 12:05:59 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
                  4⤵
                  • Creates scheduled task(s)
                  PID:528
                • C:\Windows\SysWOW64\schtasks.exe
                  schtasks /run /I /tn "gVchXDETP"
                  4⤵
                    PID:1784
                  • C:\Windows\SysWOW64\schtasks.exe
                    schtasks /DELETE /F /TN "gVchXDETP"
                    4⤵
                      PID:1712
              • C:\Windows\system32\taskeng.exe
                taskeng.exe {4B7AE682-F4ED-4AA6-B63E-CB151B20BAD2} S-1-5-21-2292972927-2705560509-2768824231-1000:GRXNNIIE\Admin:Interactive:[1]
                1⤵
                  PID:1492
                  • 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:916
                    • C:\Windows\system32\gpupdate.exe
                      "C:\Windows\system32\gpupdate.exe" /force
                      3⤵
                        PID:1368

                  Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

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                        Downloads

                        Install.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\7zSA1F.tmp\Install.exe
                        • Size 6.3MB
                        • SHA256 29336a7e642a3e6eec7b2dcc3cfb2f8604334e0da3cf83b43dfc8ca3d0f17e73
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\7zSA1F.tmp\Install.exe
                        • Size 6.3MB
                        • SHA256 29336a7e642a3e6eec7b2dcc3cfb2f8604334e0da3cf83b43dfc8ca3d0f17e73
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\7zSF5D.tmp\Install.exe
                        • Size 6.8MB
                        • SHA256 fa622e0a4d023232f16015c8af2f464933217ab600d91ccdaf0099db232c8b52
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\7zSF5D.tmp\Install.exe
                        • Size 6.8MB
                        • SHA256 fa622e0a4d023232f16015c8af2f464933217ab600d91ccdaf0099db232c8b52
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path \Users\Admin\AppData\Local\Temp\7zSA1F.tmp\Install.exe
                        • Size 6.3MB
                        • SHA256 29336a7e642a3e6eec7b2dcc3cfb2f8604334e0da3cf83b43dfc8ca3d0f17e73
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path \Users\Admin\AppData\Local\Temp\7zSA1F.tmp\Install.exe
                        • Size 6.3MB
                        • SHA256 29336a7e642a3e6eec7b2dcc3cfb2f8604334e0da3cf83b43dfc8ca3d0f17e73
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path \Users\Admin\AppData\Local\Temp\7zSA1F.tmp\Install.exe
                        • Size 6.3MB
                        • SHA256 29336a7e642a3e6eec7b2dcc3cfb2f8604334e0da3cf83b43dfc8ca3d0f17e73
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path \Users\Admin\AppData\Local\Temp\7zSA1F.tmp\Install.exe
                        • Size 6.3MB
                        • SHA256 29336a7e642a3e6eec7b2dcc3cfb2f8604334e0da3cf83b43dfc8ca3d0f17e73
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path \Users\Admin\AppData\Local\Temp\7zSF5D.tmp\Install.exe
                        • Size 6.8MB
                        • SHA256 fa622e0a4d023232f16015c8af2f464933217ab600d91ccdaf0099db232c8b52
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path \Users\Admin\AppData\Local\Temp\7zSF5D.tmp\Install.exe
                        • Size 6.8MB
                        • SHA256 fa622e0a4d023232f16015c8af2f464933217ab600d91ccdaf0099db232c8b52
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path \Users\Admin\AppData\Local\Temp\7zSF5D.tmp\Install.exe
                        • Size 6.8MB
                        • SHA256 fa622e0a4d023232f16015c8af2f464933217ab600d91ccdaf0099db232c8b52
                        • MD5 SHA1 SHA512 SSDEEP

                        Install.exe

                        • Path \Users\Admin\AppData\Local\Temp\7zSF5D.tmp\Install.exe
                        • Size 6.8MB
                        • SHA256 fa622e0a4d023232f16015c8af2f464933217ab600d91ccdaf0099db232c8b52
                        • MD5 SHA1 SHA512 SSDEEP

                        memory/916-97-0x000007FEF3090000-0x000007FEF3BED000-memory.dmp

                        memory/916-96-0x000007FEF3BF0000-0x000007FEF4613000-memory.dmp

                        memory/916-101-0x000000000283B000-0x000000000285A000-memory.dmp

                        memory/916-95-0x000007FEFBB41000-0x000007FEFBB43000-memory.dmp

                        memory/916-98-0x0000000002834000-0x0000000002837000-memory.dmp

                        memory/916-100-0x0000000002834000-0x0000000002837000-memory.dmp

                        memory/1216-71-0x0000000010000000-0x0000000010B5D000-memory.dmp

                        memory/1904-54-0x00000000762D1000-0x00000000762D3000-memory.dmp