PUA.Win32.Dotdo.USMANIOGAJ
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.
TECHNICAL DETAILS
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 adds the following processes:
- taskkill /im chrome.exe /t /f
- %System%\svchost.exe -k netsvcs
- %Windows%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
- %System%\svchost.exe -k LocalServiceAndNoImpersonation
- %Windows%\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe
- %System%\sppsvc.exe
- "%System Root%\Program Files\Windows Media Player\wmpnetwk.exe"
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It creates the following folders:
- %Program Files%\Google\Chrome
- %Program Files%\Google\Chrome\Application
- %System Root%\Users
- %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft
- %Program Files%\Google
- %User Profile%\AppData
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows 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 Potentially Unwanted Application deletes the following folders:
- %User Temp%\nsrDEEA.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).)
Dropping Routine
This Potentially Unwanted Application drops the following files:
- %Program Files%\Google\Chrome\Application\honorific.exe
- %All Users Profile%\Microsoft\Windows\DRM\drmstore.hds
- %Start Menu%\Programs\Mozilla firefox.lnk
- %Desktop%\Mozilla firefox.lnk
- %AppDataLocal%\Microsoft\Media Player\CurrentDatabase_372.wmdb
- %Program Files%\Google\Chrome\Application\chromeTwinning.exe
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Google Chrome.lnk
- %Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Mozilla Firefirefox.lnk
- %System Root%\Users\Public\Desktop\Google Chrome.lnk
- %Program Files%\Google\Chrome\Application\chrome.exe
- %All Users Profile%\Microsoft\Windows\DRM\v3ks.sec
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Mozilla firefox.lnk
- %System Root%\Users\Public\Desktop\firefox.lnk
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
This report is generated via an automated analysis system.
SOLUTION
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 PUA.Win32.Dotdo.USMANIOGAJ
- 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
Search and delete these components
- %Program Files%\Google\Chrome\Application\honorific.exe
- %All Users Profile%\Microsoft\Windows\DRM\drmstore.hds
- %Start Menu%\Programs\Mozilla firefox.lnk
- %Desktop%\Mozilla firefox.lnk
- %AppDataLocal%\Microsoft\Media Player\CurrentDatabase_372.wmdb
- %Program Files%\Google\Chrome\Application\chromeTwinning.exe
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Google Chrome.lnk
- %Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Mozilla Firefirefox.lnk
- %System Root%\Users\Public\Desktop\Google Chrome.lnk
- %Program Files%\Google\Chrome\Application\chrome.exe
- %All Users Profile%\Microsoft\Windows\DRM\v3ks.sec
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Mozilla firefox.lnk
- %System Root%\Users\Public\Desktop\firefox.lnk
Step 4
Search and delete these folders
- %Program Files%\Google\Chrome
- %Program Files%\Google\Chrome\Application
- %System Root%\Users
- %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft
- %Program Files%\Google
- %User Profile%\AppData
Step 5
Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.Dotdo.USMANIOGAJ. 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:
Did this description help? Tell us how we did.