TROJ_FAKEAV.SMJP
Rogue:Win32/FakeSpypro (Microsoft), FakeAlert-SpyPro.gen.bb (Mcafee), Mal/FakeAV-HS (Sophos), Trojan.FakeAV!gen39 (Symantec)
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
It accesses URLs to entice the users to buy the licensed fake AV software and enter their credit card information.
It also connects to adult-related sites.
This Trojan may be downloaded by other malware/grayware/spyware from remote sites. It may be unknowingly downloaded by a user while visiting malicious websites.
TECHNICAL DETAILS
319,489 bytes
PE
Yes
25 Jan 2011
Connects to URLs/Ips
Arrival Details
This Trojan may be downloaded by other malware/grayware/spyware from remote sites.
It may be unknowingly downloaded by a user while visiting malicious websites.
Installation
This Trojan drops the following copies of itself into the affected system:
- %User Profile%\Local Settings\Temp\{random name_1}\{random name_2}.exe
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
It creates the following folders:
- %User Profile%\Local Settings\Temp\{random name_1}
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Autostart Technique
This Trojan creates the following registry entries to enable automatic execution of dropped component at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random name_3} = %User Profile%\Local Settings\Temp\{random name_1}\{random name_2}.exe
Other System Modifications
This Trojan adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\PhishingFilter
EnabledV8 = 0
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\PhishingFilter
Enabled = 0
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Download
RunInvalidSignatures = 1
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Associations
LowRiskFileTypes = .exe
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Attachments
SaveZoneInformation = 1
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
ProxyServer = http=127.0.0.1:8992
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
ProxyOverride = [<]local[>]
It adds the following registry keys as part of its installation routine:
HKEY_CURRENT_USER\Software\{random name_4}
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Download
CheckExeSignatures = no
(Note: The default value data of the said registry entry is yes.)
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
ProxyEnable = 1
(Note: The default value data of the said registry entry is 0.)
Other Details
This Trojan does the following:
- It accesses the following URLs to entice the users to buy the licensed fake AV software and enter their credit card information:
- http://{BLOCKED}te.com
- http://{BLOCKED}te.net
- It also connects to the following adult-related sites:
- www.{BLOCKED}a.com
- www.{BLOCKED}o.org
- www.{BLOCKED}o.com
- www.{BLOCKED}t.com
SOLUTION
8.900
7.792.18
26 Jan 2011
1/26/2011 12:00:00 AM
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Identify and terminate files detected as TROJ_FAKEAV.SMJP
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.
HKEY_CURRENT_USER\Software\{random name_4}Step 4
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- {random name_3} = %User Profile%\Local Settings\Temp\{random name_1}\{random name_2}.exe
- {random name_3} = %User Profile%\Local Settings\Temp\{random name_1}\{random name_2}.exe
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter
- EnabledV8 = 0
- EnabledV8 = 0
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter
- Enabled = 0
- Enabled = 0
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download
- RunInvalidSignatures = 1
- RunInvalidSignatures = 1
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations
- LowRiskFileTypes = .exe
- LowRiskFileTypes = .exe
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments
- SaveZoneInformation = 1
- SaveZoneInformation = 1
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
- ProxyServer = http=127.0.0.1:8992
- ProxyServer = http=127.0.0.1:8992
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
- ProxyOverride = [<]local[\]
- ProxyOverride = [<]local[\]
Step 5
Restore this modified registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download
- From: CheckExeSignatures = no
To: CheckExeSignatures = yes
- From: CheckExeSignatures = no
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
- From: ProxyEnable = 1
To: ProxyEnable = 0
- From: ProxyEnable = 1
Step 6
Search and delete these folders
Step 7
Scan your computer with your Trend Micro product to delete files detected as TROJ_FAKEAV.SMJP. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
NOTES:
<b>Note: The Internet Settings and Policies are configurable depending on an organization's rules and policies.</b>
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