DDOS_NITOL.LZ
Win32/ServStart.CP trojan (ESET), Backdoor:Win32/Farfli.BZ (Microsoft), Trojan.Win32.Vehidis.oy (Kaspersky)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
This Trojan may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
However, as of this writing, the said sites are inaccessible. It deletes the initially executed copy of itself.
TECHNICAL DETAILS
43,008 bytes
EXE
Yes
27 Mar 2014
Connects to URLs/IPs, Downloads files, Launches DoS/DDoS attacks
Arrival Details
This Trojan may arrive bundled with malware packages as a malware component.
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Autostart Technique
This Trojan drops the following file(s) in the Windows User Startup folder to enable its automatic execution at every system startup:
- %All Users Profile%\Start Menu\Programs\Startup\{malware name}
(Note: %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}gned.{BLOCKED}z.net/
- http://{BLOCKED}.{BLOCKED}.150.196:2014/
- http://{BLOCKED}.{BLOCKED}.128.124:32892/
However, as of this writing, the said sites are inaccessible.
It deletes the initially executed copy of itself
NOTES:
This Trojan may download additional malware or configurations from the mentioned URLs to perform its Denial-of-Service routine.
SOLUTION
9.700
10.690.03
27 Mar 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
Search and delete these files
Step 4
Restart in normal mode and scan your computer with your Trend Micro product for files detected as DDOS_NITOL.LZ. 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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