Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'b424857db990f63ef956b71e7a796979' = '"%TEMP%\chomry.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'b424857db990f63ef956b71e7a796979' = '"%TEMP%\chomry.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\chomry.exe' = '%TEMP%\chomry.exe:*:Enabled:chomry.exe'
Creates and executes the following:
- '%TEMP%\chomry.exe'
- '<SYSTEM32>\1.exe'
- '<SYSTEM32>\winrar420x86cz.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\chomry.exe" "chomry.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\chomry.exe
- <SYSTEM32>\1.exe
- <SYSTEM32>\winrar420x86cz.exe
Network activity:
Connects to:
- 'al#####af100.no-ip.biz':1886
UDP:
- DNS ASK al#####af100.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
- ClassName: 'EDIT' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
