TROJ_INJECTOR.YZ
(AVG) ,W32/Injector.AIFR!tr (Fortinet) ,a variant of Win32/Injector.AIFR trojan (Eset) ,Trojan.Win32.Generic!BT (Sunbelt)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may be downloaded by other malware/grayware/spyware from remote sites.
TECHNICAL DETAILS
180,224 bytes
EXE
No
21 Feb 2014
Arrival Details
This Trojan may be downloaded by other malware/grayware/spyware from remote sites.
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Run
nodvchosts = "%Application Data%\Adober\Isass.cpl"
It drops the following shortcut pointing to its copy in the User Startup folder to enable its automatic execution at every system startup:
- %User Startup%\ATL_EAGame.lnk
(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)
Other Details
This Trojan requires the following additional components to properly run:
- %Application Data%\lzexpam.drv
- %Application Data%\mmciwav.drv
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
SOLUTION
9.700
10.604.06
13 Feb 2014
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
Restart in Safe Mode
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\Windows\CurrentVersion\Run
- nodvchosts = "%Application Data%\Adober\Isass.cpl"
- nodvchosts = "%Application Data%\Adober\Isass.cpl"
Step 4
Search and delete this file
- %User Startup%\ATL_EAGame.lnk
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_INJECTOR.YZ. 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.
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