Trojan.LNK.DROPPER.B
Trojan.LNK.Agent (IKARUS)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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.
It does not have any propagation routine.
It does not have any backdoor routine.
It does not have any information-stealing capability.
TECHNICAL DETAILS
6,893 bytes
LNK
No
17 Sep 2024
Drops files
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 drops the following files:
- %User Temp%\ieuinit.inf
- %User Temp%\ie4uinit.exe → component of Internet Explorer
(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 processes:
- %System%\cmd.exe /S /D /c" call xcopy /Y /C /Q %windir%\system32\ie4uinit.exe "%User Temp%\*" "
- xcopy /Y /C /Q %System%\ie4uinit.exe "%User Temp%\*"
- %System%\cmd.exe /S /D /c" start "" wmic process call create "%User Temp%\ie4uinit.exe -basesettings" "
- wmic process call create "%User Temp%\ie4uinit.exe -basesettings"
(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).)
Propagation
This Trojan does not have any propagation routine.
Backdoor Routine
This Trojan does not have any backdoor routine.
Rootkit Capabilities
This Trojan does not have rootkit capabilities.
Information Theft
This Trojan does not have any information-stealing capability.
Other Details
This Trojan does the following:
- It copies the legitimate file %System%\ie4uinit.exe to %User Temp%.
(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 does not exploit any vulnerability.
SOLUTION
9.800
19.650.05
14 Oct 2024
19.651.00
15 Oct 2024
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Search and delete this file
- %User Temp%\ieuinit.inf
- %User Temp%\ie4uinit.exe
Step 4
Scan your computer with your Trend Micro product to delete files detected as Trojan.LNK.DROPPER.B. 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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