Adware.Win32.ConvertAd.AB
AdWare.NSIS.ConvertAd.ony (Kaspersky); ConvertAd (Sunbelt)
Windows

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
198,444 bytes
EXE
Yes
22 Jan 2020
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 adds the following processes:
- %User Temp%\nsvC779.tmp
- %User Temp%\nsvC866.tmp
- %User Temp%\nspC897.tmp
- %User Temp%\nsaC8D9.tmp height:100%;
- %User Temp%\nsvC90B.tmp margin:0;
- %User Temp%\nspC93C.tmp border:0;
- %User Temp%\nshC96E.tmp font-size:100%;
- %User Temp%\nskC9B0.tmp background:transparent;
- %User Temp%\nsbC9E1.tmp body {
- %User Temp%\nsvCA13.tmp }
- %User Temp%\nspCA45.tmp
- %User Temp%\nsfCA86.tmp
- %User Temp%\nshCAD7.tmp
- %User Temp%\nssCB09.tmp
- %User Temp%\nshCB2B.tmp
- %User Temp%\nsfCB7C.tmp document.write(
- %User Temp%\nsgCBBE.tmp + 'src="//sedoparking.com/frmpark/'
- %User Temp%\nsnCBF0.tmp + 'Skenzor6'
- %User Temp%\nsdCC31.tmp + '<\/script>'
- %User Temp%\nswCC63.tmp
- %User Temp%\nsuCC95.tmp try{if(typeof handleABPDetect=="function"){handleABPDetect();}}catch(err){
- %User Temp%\nstCCC6.tmp
- %User Temp%\nseCCE9.tmp
It creates the following folders:
- %System Root%\Users
- %User Profile%\AppData
(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other System Modifications
This Adware deletes the following folders:
- %User Temp%\nsnA979.tmp
(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\VOPackage
isnw = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\ASPackage
isnw = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\APPackage
isnw = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\YSPackage
isnw = "7"
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\NUIns
isnw = "7"
Dropping Routine
This Adware drops the following files:
- %User Temp%\Uninstall.exe
(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other Details
This Adware connects to the following possibly malicious URL:
- http://{BLOCKED}ad-servers.com/SysInfo/Validate.exe
- http://{BLOCKED}atscounter.com/Generic/vos.php?{random characters}
- http://ibf-cmi-1938953175.{BLOCKED}t-1.elb.amazonaws.com
This report is generated via an automated analysis system.
SOLUTION
9.850
Step 1
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 2
Identify and terminate files detected as Adware.Win32.ConvertAd.AB
- 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 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\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\VOPackage
- isnw = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ASPackage
- isnw = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\APPackage
- isnw = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\YSPackage
- isnw = "7"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\NUIns
- isnw = "7"
Step 4
Search and delete this file
- %User Temp%\Uninstall.exe
Step 5
Search and delete these folders
- %System Root%\Users
- %User Profile%\AppData
Step 6
Scan your computer with your Trend Micro product to delete files detected as Adware.Win32.ConvertAd.AB. 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 the following Trend Micro Support pages for more information:
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