TROJ_FAKEAV.TIN
Rogue:Win32/FakeRean (Microsoft), BackDoor-FJW!F41FF0C78F15 (McAfee), FraudTool.Win32.FakeRean (Sunbelt), W32/FakeAV.PXPL!tr (Fortinet), Trojan-PSW.Win32.Tepfer (Ikarus), Win32/Kryptik.ASKH trojan (ESET), Trj/Tepfer.A (Panda), Trojan.FakeAV.01657 (VBA32)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Trojan drops the following files:
- %User Temp%\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
- {All Users' Profile}\Application Data\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl - for Windows OS other than Vista and 7
- %Application Data%\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl - for Windows OS other than Vista and 7
- %User Profile%\Templates\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl - for Windows OS other than Vista and 7
- %ProgramData%\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl - for Windows Vista and 7 only
- {All Users' Profile}\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl - for Windows Vista and 7 only
- %AppDataLocal%\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl - for Windows Vista and 7 only
- %Application Data%\Microsoft\Windows\Templates\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl - for Windows Vista and 7 only
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.. %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.. %ProgramData% is a version of the Program Files folder where any user on a multi-user computer can make changes to programs. This is usually C:\ProgramData in Windows Vista and 7, or C:\Program Files on Windows 2000, XP (32-bit), and Server 2003, or C:\Program Files (x86) on Windows XP (64-bit).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local on Windows Vista and 7.)
Other System Modifications
This Trojan adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows - for Windows OS other than Vista and 7
Identity = "b570ddac"
HKEY_CURRENT_USER\Software\Classes\
.exe\shell\open\
command
(Default) = "{malware path and file name}" -a "%1" %*"
It modifies the following registry entries:
HKEY_CLASSES_ROOT\exefile\shell\
open\command
(Default) = "{malware path and file name} -a "%1" %*"
(Note: The default value data of the said registry entry is "%1" %*.)
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\IEXPLORE.EXE\shell\
open\command
(Default) = ""{malware path and file name} -a "%Program Files%\Internet Explorer\iexplore.exe""
(Note: The default value data of the said registry entry is %Program Files%\Internet Explorer\iexplore.exe.)
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\FIREFOX.EXE\shell\
safemode\command
(Default) = ""{malware path and file name}" -a "%Program Files%\Mozilla Firefox\firefox.exe" -safe-mode"
(Note: The default value data of the said registry entry is "%Program Files%\Mozilla Firefox\firefox.exe" -safe-mode.)
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\FIREFOX.EXE\shell\
open\command
(Default) = ""{malware path and file name}" -a "%Program Files%\Mozilla Firefox\firefox.exe""
(Note: The default value data of the said registry entry is %Program Files%\Mozilla Firefox\firefox.exe.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}.{BLOCKED}.104.243/{random characters}
- http://{BLOCKED}sdlinksfill.com/data.exe
SOLUTION
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
Scan your computer with your Trend Micro product and note files detected as TROJ_FAKEAV.TIN
Step 3
Restart in Safe Mode
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
- Identity = "b570ddac"
- Identity = "b570ddac"
- In HKEY_CURRENT_USER\Software\Classes\.exe\shell\open\command
- (Default) = "{malware path and file name}" -a "%1" %*"
- (Default) = "{malware path and file name}" -a "%1" %*"
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_CLASSES_ROOT\exefile\shell\open\command
- From: (Default) = "{malware path and file name} -a "%1" %*"
To: (Default) = "%1" %*
- From: (Default) = "{malware path and file name} -a "%1" %*"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command
- From: (Default) = ""{malware path and file name} -a "%Program Files%\Internet Explorer\iexplore.exe""
To: (Default) = %Program Files%\Internet Explorer\iexplore.exe
- From: (Default) = ""{malware path and file name} -a "%Program Files%\Internet Explorer\iexplore.exe""
- In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\safemode\command
- From: (Default) = ""{malware path and file name}" -a "%Program Files%\Mozilla Firefox\firefox.exe" -safe-mode"
To: (Default) = "%Program Files%\Mozilla Firefox\firefox.exe" -safe-mode
- From: (Default) = ""{malware path and file name}" -a "%Program Files%\Mozilla Firefox\firefox.exe" -safe-mode"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\open\command
- From: (Default) = ""{malware path and file name}" -a "%Program Files%\Mozilla Firefox\firefox.exe""
To: (Default) = %Program Files%\Mozilla Firefox\firefox.exe
- From: (Default) = ""{malware path and file name}" -a "%Program Files%\Mozilla Firefox\firefox.exe""
Step 6
Search and delete this file
- %User Temp%\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
- {All Users' Profile}\Application Data\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
- %Application Data%\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
- %User Profile%\Templates\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
- %ProgramData%\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
- {All Users' Profile}\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
- %AppDataLocal%\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
- %Application Data%\Microsoft\Windows\Templates\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_FAKEAV.TIN. 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.
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