Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '49cb2dccd1349fc09216ad16eb05a48d' = '"%TEMP%\aljoker.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '49cb2dccd1349fc09216ad16eb05a48d' = '"%TEMP%\aljoker.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\49cb2dccd1349fc09216ad16eb05a48d.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\aljoker.exe' = '%TEMP%\aljoker.exe:*:Enabled:aljoker.exe'
Creates and executes the following:
- '%TEMP%\aljoker.exe'
- '<LS_APPDATA>vcVKTueHKv.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\aljoker.exe" "aljoker.exe" ENABLE
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>CjwbH_IYLb.veraa.jpg
Modifies file system :
Creates the following files:
- %TEMP%\aljoker.exe
- %HOMEPATH%\Recent\Local Settings.lnk
- %HOMEPATH%\Recent\Application DataCjwbH_IYLb.veraa.lnk
- <LS_APPDATA>vcVKTueHKv.exe
- <LS_APPDATA>CjwbH_IYLb.veraa.jpg
Network activity:
Connects to:
- 'al####r.no-ip.org':1177
UDP:
- DNS ASK al####r.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
