TROJ_DROPPER.EJRD
Windows
![](/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
1,438,488 bytes
EXE
No
06 Dec 2014
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 creates the following folders:
- %System Root%\DOCUME~1
- %System Root%\DOCUME~1\Wilbert
- %User Profile%\LOCALS~1
- %User Temp%\nsc3.tmp
- %System Root%\Documents and Settings\Wilbert
- %Application Data%\MarkAny
(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.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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 Trojan deletes the following files:
- %User Temp%\nsx1.tmp
- %User Temp%\nsc3.tmp
- %User Temp%\nsz13.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\MozillaPlugins\
@markany.com/npMAOnMultiWebSafer_SCOURT
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
MarkAny WebSafer Plugin for Multi Browser (SCOURT)
HKEY_LOCAL_MACHINE\Software\MozillaPlugins\
@markany.com/npMA_VM_CHECK
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
MarkAny VM Check Plugin
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@markany.com/npMAOnMultiWebSafer_SCOURT
Path = "%Application Data%\MarkAny\npMAOnMultiWebSafer_SCOURT.dll"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MarkAny WebSafer Plugin for Multi Browser (SCOURT)
DisplayName = "MarkAny WebSafer Plugin for Multi Browser (SCOURT)"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MarkAny WebSafer Plugin for Multi Browser (SCOURT)
UninstallString = "%Application Data%\MarkAny\Uninstall_WebSafer_SCOURT.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MarkAny WebSafer Plugin for Multi Browser (SCOURT)
DisplayVersion = "2.5.0.1"
HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@markany.com/npMA_VM_CHECK
Description = "MarkAny VM Check Plugin"
HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@markany.com/npMA_VM_CHECK
Path = "%Application Data%\MarkAny\npMA_VM_CHECK.dll"
HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@markany.com/npMA_VM_CHECK
ProductName = "npMA_VM_CHECK"
HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@markany.com/npMA_VM_CHECK
Vendor = "MarkAny"
HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
@markany.com/npMA_VM_CHECK
Version = "1.0.0.3"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MarkAny VM Check Plugin
DisplayName = "MarkAny VM Check Plugin"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MarkAny VM Check Plugin
UninstallString = "%Application Data%\MarkAny\Uninstall_vm_check.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MarkAny VM Check Plugin
DisplayVersion = "1.0.0.3"
Dropping Routine
This Trojan drops the following files:
- %User Temp%\nsc3.tmp\System.dll
- %System%\IMGSF01.dll
- %System%\IMGSF02.dll
- %System%\IMGSF03.dll
- %System%\IMGSFMGR.dll
- %System%\IMGSFLOADER.exe
- %System%\MaChromeSafer.dll
- %System%\MaFireFoxSafer.dll
- %System%\MaOperaSafer.dll
- %System%\MaSafariSafer.dll
- %Application Data%\MarkAny\npMAOnMultiWebSafer_SCOURT.dll
- %Application Data%\MarkAny\VMCheckPlugin_Setup.exe
- %System%\IMGSC01.dll
- %System%\IMGSC02.dll
- %System%\IMGSC03.dll
- %System%\IMGSCMGR.dll
- %System%\IMGSCLOADER.exe
- %Application Data%\MarkAny\Uninstall_WebSafer_SCOURT.exe
- %Application Data%\MarkAny\npMA_VM_CHECK.dll
- %Application Data%\MarkAny\Uninstall_vm_check.exe
(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.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.)
This report is generated via an automated analysis system.
SOLUTION
9.700
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\MozillaPlugins
- @markany.com/npMAOnMultiWebSafer_SCOURT
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
- MarkAny WebSafer Plugin for Multi Browser (SCOURT)
- In HKEY_LOCAL_MACHINE\Software\MozillaPlugins
- @markany.com/npMA_VM_CHECK
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
- MarkAny VM Check Plugin
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\MozillaPlugins\@markany.com/npMAOnMultiWebSafer_SCOURT
- Path = "%Application Data%\MarkAny\npMAOnMultiWebSafer_SCOURT.dll"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MarkAny WebSafer Plugin for Multi Browser (SCOURT)
- DisplayName = "MarkAny WebSafer Plugin for Multi Browser (SCOURT)"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MarkAny WebSafer Plugin for Multi Browser (SCOURT)
- UninstallString = "%Application Data%\MarkAny\Uninstall_WebSafer_SCOURT.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MarkAny WebSafer Plugin for Multi Browser (SCOURT)
- DisplayVersion = "2.5.0.1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@markany.com/npMA_VM_CHECK
- Description = "MarkAny VM Check Plugin"
- In HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@markany.com/npMA_VM_CHECK
- Path = "%Application Data%\MarkAny\npMA_VM_CHECK.dll"
- In HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@markany.com/npMA_VM_CHECK
- ProductName = "npMA_VM_CHECK"
- In HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@markany.com/npMA_VM_CHECK
- Vendor = "MarkAny"
- In HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@markany.com/npMA_VM_CHECK
- Version = "1.0.0.3"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MarkAny VM Check Plugin
- DisplayName = "MarkAny VM Check Plugin"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MarkAny VM Check Plugin
- UninstallString = "%Application Data%\MarkAny\Uninstall_vm_check.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MarkAny VM Check Plugin
- DisplayVersion = "1.0.0.3"
Step 4
Search and delete these components
- %User Temp%\nsc3.tmp\System.dll
- %System%\IMGSF01.dll
- %System%\IMGSF02.dll
- %System%\IMGSF03.dll
- %System%\IMGSFMGR.dll
- %System%\IMGSFLOADER.exe
- %System%\MaChromeSafer.dll
- %System%\MaFireFoxSafer.dll
- %System%\MaOperaSafer.dll
- %System%\MaSafariSafer.dll
- %Application Data%\MarkAny\npMAOnMultiWebSafer_SCOURT.dll
- %Application Data%\MarkAny\VMCheckPlugin_Setup.exe
- %System%\IMGSC01.dll
- %System%\IMGSC02.dll
- %System%\IMGSC03.dll
- %System%\IMGSCMGR.dll
- %System%\IMGSCLOADER.exe
- %Application Data%\MarkAny\Uninstall_WebSafer_SCOURT.exe
- %Application Data%\MarkAny\npMA_VM_CHECK.dll
- %Application Data%\MarkAny\Uninstall_vm_check.exe
Step 5
Search and delete these folders
- %System Root%\DOCUME~1
- %System Root%\DOCUME~1\Wilbert
- %User Profile%\LOCALS~1
- %User Temp%\nsc3.tmp
- %System Root%\Documents and Settings\Wilbert
- %Application Data%\MarkAny
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_DROPPER.EJRD. 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 7
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%\nsx1.tmp
- %User Temp%\nsc3.tmp
- %User Temp%\nsz13.tmp
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