PUA_InstallManager
PUA/InstallMonetizer.Gen (Antivir)
Windows
Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This potentially unwanted application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It modifies the Internet Explorer Zone Settings.
TECHNICAL DETAILS
229,120 bytes
EXE
No
26 Jun 2015
Arrival Details
This potentially unwanted application 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 potentially unwanted application drops the following file(s)/component(s):
- %TEMP%\{random folder}\registry.dll
- %Temporary Internet Files%\Content.IE5\{random folder}\DS_Unq_trackstats_mon[1].htm
- %Temporary Internet Files%\Content.IE5\{random folder}\FCL_Co_Unq_remote_v4[1].htm
- %Temporary Internet Files%\Content.IE5\{random folder}\DSS_Unq_IMapplication_mon_remote[1].htm
(Note: %Temporary Internet Files% is the Temporary Internet Files folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temporary Internet Files on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Microsoft\Windows\Temporary Internet Files on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), and Windows Server 2008; C:\Users\{user name}\AppData\Local\Microsoft\Windows\INetCache on Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), and Windows Server 2012.)
Other System Modifications
This potentially unwanted application modifies the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Hardware Profiles\0001\Software\
Microsoft\windows\CurrentVersion\
Internet Settings
ProxyEnable = "1"
(Note: The default value data of the said registry entry is "{Default}".)
Web Browser Home Page and Search Page Modification
This potentially unwanted application modifies the Internet Explorer Zone Settings.
Other Details
This potentially unwanted application connects to the following possibly malicious URL:
- http://www.{BLOCKED}ceast.com/FCL_Co_Unq_remote_v4.php
- http://www.{BLOCKED}etwest.com/DSS_Unq_IMapplication_mon_remote.php
- http://www.{BLOCKED}twest.com/DS_Unq_trackstats_mon.php
SOLUTION
9.750
1.638.36
06 Jul 2015
1.639.00
07 Jul 2015
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Search and delete these components
- %TEMP%\{random folder}\registry.dll
- %Temporary Internet Files%\Content.IE5\{random folder}\DS_Unq_trackstats_mon[1].htm
- %Temporary Internet Files%\Content.IE5\{random folder}\FCL_Co_Unq_remote_v4[1].htm
- %Temporary Internet Files%\Content.IE5\{random folder}\DSS_Unq_IMapplication_mon_remote[1].htm
Step 4
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_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings
- From: ProxyEnable = "1"
To: ProxyEnable = "{Default}"
- From: ProxyEnable = "1"
Step 5
Scan your computer with your Trend Micro product to delete files detected as PUA_InstallManager. 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.
Step 6
Reset Internet security settings
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