BKDR_GTFLOOD.A
Backdoor.Trojan (Symantec)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware
This backdoor may be dropped by other malware.
It runs certain commands that it receives remotely from a malicious user. Doing this puts the affected computer and information found on the computer at greater risk. It connects to a website to send and receive information.
It retrieves specific information from the affected system.
It terminates itself if it detects it is being run in a virtual environment.
TECHNICAL DETAILS
52,736 bytes
DLL
Yes
21 May 2012
Steals information, Compromises system security
Arrival Details
This backdoor may be dropped by other malware.
Installation
This backdoor adds the following mutexes to ensure that only one of its copies runs at any one time:
- D5X6d8-d83@
- enddl123.gnway.net:511
- woyaobaomax6.iego.net:8108
Backdoor Routine
This backdoor opens the following ports:
- 511
- 8108
It executes the following command(s) from a remote malicious user:
- - Launch Denial of Service (DoS) attack
- - Open a website
- - Download and execute file(s)
- - Browse/manipulate files on local drives
It connects to the following websites to send and receive information:
- {BLOCKED}aomax6.iego.net
- {BLOCKED}23.gnway.net
Information Theft
This backdoor retrieves the following information from the affected system:
- Processor Name
- CPU Information
- Operating System Information
- User Account(s)
Other Details
This backdoor terminates itself if it detects it is being run in a virtual environment.
SOLUTION
9.200
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_GTFLOOD.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.
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