Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'Remcos' = '"%APPDATA%\google.exe"'
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\] 'Remcos' = '"%APPDATA%\google.exe"'
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\] 'Remcos' = '"%APPDATA%\google.exe"'
Malicious functions
Injects code into
the following user processes:
- google.exe
Modifies file system
Creates the following files
- %APPDATA%\google.exe
- %TEMP%\install.vbs
- %APPDATA%\remcos\logs.dat
Sets the 'hidden' attribute to the following files
- %APPDATA%\google.exe
Deletes the following files
- %TEMP%\install.vbs
Deletes itself.
Network activity
Connects to
- '1.####osagent.com':10001
UDP
- DNS ASK 1.####osagent.com
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\wscript.exe' "%TEMP%\install.vbs"
- '%APPDATA%\google.exe'
- '%WINDIR%\syswow64\wscript.exe' "%TEMP%\install.vbs"' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c "%APPDATA%\google.exe"' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c "%APPDATA%\google.exe"
