Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Application DataBTYhFmYiSm' = 'wscript.exe //B "%TEMP%\Application DataBTYhFmYiSm..vbs"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '12ce4e06a81e8d54fd01d9b762f1b1bb' = '"%TEMP%\system.exe" ..'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '12ce4e06a81e8d54fd01d9b762f1b1bb' = '"%TEMP%\system.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '18.exe' = '%APPDATA%Microsoft\System\Services\18.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '18.exe' = '%APPDATA%Microsoft\System\Services\18.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Application DataBTYhFmYiSm' = 'wscript.exe //B "%TEMP%\Application DataBTYhFmYiSm..vbs"'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\12ce4e06a81e8d54fd01d9b762f1b1bb.exe
Creates the following files on removable media:
- <Drive name for removable media>:\12ce4e06a81e8d54fd01d9b762f1b1bb.lnk
- <Drive name for removable media>:\Application DataBTYhFmYiSm..vbs.lnk
- <Drive name for removable media>:\12ce4e06a81e8d54fd01d9b762f1b1bb.exe
- <Drive name for removable media>:\Application DataBTYhFmYiSm..vbs
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\system.exe' = '%TEMP%\system.exe:*:Enabled:system.exe'
Creates and executes the following:
- '%TEMP%\system.exe'
- '<LS_APPDATA>oTGjIzS_Oe.exe'
- '%APPDATA%\explorer.exe'
Executes the following:
- '<SYSTEM32>\wscript.exe' //B "%TEMP%\Application DataBTYhFmYiSm..vbs"
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\system.exe" "system.exe" ENABLE
- '<SYSTEM32>\wscript.exe' "<LS_APPDATA>BTYhFmYiSm..vbs"
Modifies file system :
Creates the following files:
- %TEMP%\system.exe
- %TEMP%\Application DataBTYhFmYiSm..vbs
- C:\Application DataBTYhFmYiSm..vbs
- <LS_APPDATA>BTYhFmYiSm..vbs
- %APPDATA%\explorer.exe
- %APPDATA%Microsoft\System\Services\18.exe
- <LS_APPDATA>oTGjIzS_Oe.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Application DataBTYhFmYiSm..vbs
- <Drive name for removable media>:\12ce4e06a81e8d54fd01d9b762f1b1bb.exe
Network activity:
Connects to:
- 'localhost':1039
- 'lo####ool.zapto.org':1177
UDP:
- DNS ASK lo####ool.zapto.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'