TROJ_FAKEAV.BLO

This Trojan may be downloaded by other malware/grayware/spyware from remote sites. It may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

It connects to a website to send and receive information.

It installs a fake antivirus/antispyware software. It displays fake alerts that warn users of infection. It also displays fake scanning results of the affected system. It then asks for users to purchase it once scanning is completed. If users decide to purchase the rogue product, users are directed to a certain website asking for sensitive information, such as credit card numbers.

Arrival Details

This Trojan may be downloaded by other malware/grayware/spyware from remote sites.

It may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

Installation

This Trojan drops the following non-malicious files:

• %System Root%\All Users\Application Data\{malware file name}\{malware file name}

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It drops the following copies of itself into the affected system:

• %System Root%\All Users\Application Data\{malware file name}\{malware file name}.exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It creates the following folders:

• %System Root%\All Users\Application Data\{malware file name}

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\RunOnce
{malware file name} = %System Root%\All Users\Application Data\{malware file name}\{malware file name}.exe

Backdoor Routine

This Trojan connects to the following websites to send and receive information:

• http://{BLOCKED}.{BLOCKED}.174.27
• http://{BLOCKED}.{BLOCKED}.212.23
• http://{BLOCKED}.{BLOCKED}.212.14

Rogue Antivirus Routine

This Trojan displays the following fake alerts:

It installs a fake antivirus/antispyware software.

It displays fake alerts that warn users of infection. It also displays fake scanning results of the affected system. It then asks for users to purchase it once scanning is completed. If users decide to purchase the rogue product, users are directed to a certain website asking for sensitive information, such as credit card numbers.

NOTES:

It prevent all applications from executing except the following:

• aeadisrv.exe
• alg.exe
• audiodg.exe
• avreinstall.exe
• conhost.exe
• csrss.exe
• ctfmon.exe
• dwm.exe
• explorer.exe
• firefox.exe
• httpd.exe
• iastordatamgrsvc.exe
• iexplore.exe
• lsass.exe
• lsm.exe
• mdnsresponder.exe
• mfnsvc.exe
• nvscpapisvr.exe
• nvsvc.exe
• nvvsvc.exe
• openvpn.exe
• opera.exe
• pdagent.exe
• rundll32.exe
• searchindexer.exe
• services.exe
• slsvc.exe
• smss.exe
• snort.exe
• spoolsv.exe
• svchost.exe
• system
• taskhost.exe
• wininit.exe
• winlogon.exe
• winroute.exe
• wmiprvse.exe
• wscntfy.exe
• wuauclt.exe