ADW_INSTALLMON
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Adware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This adware 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 adware 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 adware creates the following folders:
- %System Root%\DOCUME~1
- %System Root%\DOCUME~1\Wilbert
- %User Profile%\LOCALS~1
- %User Temp%\nse3.tmp
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %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.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Other System Modifications
This adware modifies the following file(s):
- %System%\WBEM\AutoRecover\88744D2A29102FC88ECF505DD2E984FC.mof
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It deletes the following files:
- %User Temp%\nso1.tmp
- %User Temp%\nse3.tmp
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Wbem\WMIC
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Wbem\WMIC
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
mofcompstatus = "0"
HKEY_CURRENT_USER\Software\Microsoft\
Wbem\WMIC
WMICLC = "0"
HKEY_CURRENT_USER\Software\Microsoft\
Wbem\WMIC
mofcompMUIStatus = "0"
HKEY_CURRENT_USER\Software\Microsoft\
Wbem\WMIC
mofcompMUIStatus = "ffffffff"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
Cli.mof = "127360152460000000"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
CliEgAliases.mof = "127360152460000000"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
CliEgAliases.mfl = "127360152460000000"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\WMIC
mofcompstatus = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Wbem\WMIC
WMICLC = "49"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\CIMOM
Autorecover MOFs timestamp = "131050478306562500"
(Note: The default value data of the said registry entry is 129689362348742500.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\CIMOM
Autorecover MOFs = "{random characters}"
(Note: The default value data of the said registry entry is {random values}.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\CIMOM
Autorecover MOFs timestamp = "131050478790468750"
(Note: The default value data of the said registry entry is 129689362348742500.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
WBEM\CIMOM
Autorecover MOFs timestamp = "131050478801093750"
(Note: The default value data of the said registry entry is 129689362348742500.)
Dropping Routine
This adware drops the following files:
- %User Temp%\nse3.tmp\System.dll
- %User Temp%\nse3.tmp\nsDialogs.dll
- %User Temp%\nse3.tmp\header.bmp
- %User Temp%\nse3.tmp\registry.dll
- %User Temp%\nse3.tmp\Math.dll
- %User Temp%\nse3.tmp\blowfish.dll
- %User Temp%\nse3.tmp\UserInfo.dll
- %User Temp%\nse3.tmp\GetVersion.dll
- %User Temp%\nse3.tmp\manlib.dll
- %User Temp%\nse3.tmp\FirstResult.txt
- %User Temp%\nse3.tmp\nsExec.dll
- %User Temp%\nse3.tmp\SecondResult.txt
- %User Temp%\nse3.tmp\serlib.dll
- %User Temp%\nse3.tmp\Offer1.zip
- %User Temp%\nse3.tmp\installog.txt
- %User Temp%\tmp15.tmp
- %User Temp%\tmp19.tmp
- %System%\WBEM\AutoRecover\C8463ECBE33BC240263A0B094E46D510.mof
- %User Temp%\tmp1D.tmp
- %System%\WBEM\AutoRecover\23BDE61F1F4FACE17E9B0C01F2A1FD9B.mof
- TempWmicBatchFile.bat
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other Details
This adware connects to the following possibly malicious URL:
- http://www.{BLOCKED}wop.com
- {BLOCKED}102.217
- {BLOCKED}62.154
This report is generated via an automated analysis system.
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
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.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Wbem\
- WMIC
- In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Wbem\
- WMIC
Step 3
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_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- mofcompstatus = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Wbem\WMIC
- WMICLC = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Wbem\WMIC
- mofcompMUIStatus = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Wbem\WMIC
- mofcompMUIStatus = "ffffffff"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- Cli.mof = "127360152460000000"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- CliEgAliases.mof = "127360152460000000"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- CliEgAliases.mfl = "127360152460000000"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\WMIC
- mofcompstatus = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Wbem\WMIC
- WMICLC = "49"
Step 4
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
- From: Autorecover MOFs timestamp = "131050478306562500"
To: Autorecover MOFs timestamp = ""129689362348742500""
- From: Autorecover MOFs timestamp = "131050478306562500"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
- From: Autorecover MOFs = "{random characters}"
To: Autorecover MOFs = ""{random values}""
- From: Autorecover MOFs = "{random characters}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
- From: Autorecover MOFs timestamp = "131050478790468750"
To: Autorecover MOFs timestamp = ""129689362348742500""
- From: Autorecover MOFs timestamp = "131050478790468750"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
- From: Autorecover MOFs timestamp = "131050478801093750"
To: Autorecover MOFs timestamp = ""129689362348742500""
- From: Autorecover MOFs timestamp = "131050478801093750"
Step 5
Search and delete these components
- %User Temp%\nse3.tmp\System.dll
- %User Temp%\nse3.tmp\nsDialogs.dll
- %User Temp%\nse3.tmp\header.bmp
- %User Temp%\nse3.tmp\registry.dll
- %User Temp%\nse3.tmp\Math.dll
- %User Temp%\nse3.tmp\blowfish.dll
- %User Temp%\nse3.tmp\UserInfo.dll
- %User Temp%\nse3.tmp\GetVersion.dll
- %User Temp%\nse3.tmp\manlib.dll
- %User Temp%\nse3.tmp\FirstResult.txt
- %User Temp%\nse3.tmp\nsExec.dll
- %User Temp%\nse3.tmp\SecondResult.txt
- %User Temp%\nse3.tmp\serlib.dll
- %User Temp%\nse3.tmp\Offer1.zip
- %User Temp%\nse3.tmp\installog.txt
- %User Temp%\tmp15.tmp
- %User Temp%\tmp19.tmp
- %System%\WBEM\AutoRecover\C8463ECBE33BC240263A0B094E46D510.mof
- %User Temp%\tmp1D.tmp
- %System%\WBEM\AutoRecover\23BDE61F1F4FACE17E9B0C01F2A1FD9B.mof
- TempWmicBatchFile.bat
Step 6
Search and delete these folders
- %System Root%\DOCUME~1
- %System Root%\DOCUME~1\Wilbert
- %User Profile%\LOCALS~1
- %User Temp%\nse3.tmp
Step 7
Scan your computer with your Trend Micro product to delete files detected as ADW_INSTALLMON. 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 8
Restore deleted/modified files and/or registry entries from backup
*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- %System%\WBEM\AutoRecover\88744D2A29102FC88ECF505DD2E984FC.mof
Step 9
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %User Temp%\nso1.tmp
- %User Temp%\nse3.tmp
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