Skip to content
1-888-762-8736(M-F 8:00am-5:00pm CST)
1-877-218-7353(M-F 8:00am-5:00pm CST)
href="http://www.trendmicro.com/us/enterprise/index.html" id="ENT-overview-test2" title="SEE ALL ENTERPRISE SOLUTIONS">Enterprise Overview
This malware is the final payload of a targeted attack campaign leveraging the April 2013 Boston Marathon Bombing. It downloads malicious files onto the systems it infects. Affected users may find their systems infected with other malicious files that this malware downloads.
To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.
This Trojan may be dropped by other malware.
However, as of this writing, the said sites are inaccessible.
This Trojan may be dropped by the following malware:
This Trojan drops the following copies of itself into the affected system and executes them:
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
It drops the following file(s)/component(s):
It adds the following processes:
It injects itself into the following processes as part of its memory residency routine:
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunYahoo! = ""%System%\ymsgr_tray.exe" -local"
This Trojan attempts to access the following websites to download files, which are possibly malicious:
The malware needs the following command line parameters in order to perform its intended routine:
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Remove the malware/grayware file that dropped/downloaded TROJ_NAIKON.A
Scan your computer with your Trend Micro product and note files detected as TROJ_NAIKON.A
Restart in Safe Mode
To restart in Safe Mode:
• For Windows 2000 users
• For Windows XP users
• For Windows Server 2003 users
• For Windows Vista and Windows 7 users
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.
To delete the registry value this malware/grayware created:
Search and delete this file
To manually delete a malware/grayware file from an affected system:
• For Windows 2000, Windows XP, and Windows Server 2003:
• For Windows Vista and Windows 7 users:
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_NAIKON.A. 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.
Connect with us on
| | | |