Internet threat level: 1
Home→Descriptions→Trojan-Downloader.VBS.Agent.aby
Trojan-Downloader.VBS.Agent.aby
| Detected | Feb 16 2011 15:48 GMT |
| Released | Feb 16 2011 21:40 GMT |
| Published | Apr 20 2011 09:22 GMT |
Payload
Removal instructions
Technical Details
This Trojan downloads other malicious programs from the Internet and launches them for execution without the user's knowledge. It is a Visual Basic script. It is 3564 bytes in size.
Payload
Once launched, the Trojan downloads files from the following URL addresses:
http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1001.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1002.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1003.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1004.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1005.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1006.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1007.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1008.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1009.gif http://adminlz***600.org/img/T1gANoXmXwXXcGRBI1_1010.gifAt the time of writing, these links were inactive. It saves downloaded files under the following names, respectively:
c:\windows\Resources\1001.exe c:\windows\Resources\1002.exe c:\windows\Resources\1003.exe c:\windows\Resources\1004.exe c:\windows\Resources\1005.exe c:\windows\Resources\1006.exe c:\windows\Resources\1007.exe c:\windows\Resources\1008.exe c:\windows\Resources\1009.exe c:\windows\Resources\1010.exeThe Trojan then launched downloaded files for execution and in a hidden mode launches Internet Explorer where it opens the following link:
http://adminlz***600.org/img/gg.htm?vbs31
Removal instructions
If your computer does not have antivirus protection and has been infected by this malicious program, follow the instructions below to delete it:
- Delete the original Trojan file (its location will depend on how the program originally penetrated the infected computer).
- Delete the following files:
c:\windows\Resources\1001.exe c:\windows\Resources\1002.exe c:\windows\Resources\1003.exe c:\windows\Resources\1004.exe c:\windows\Resources\1005.exe c:\windows\Resources\1006.exe c:\windows\Resources\1007.exe c:\windows\Resources\1008.exe c:\windows\Resources\1009.exe c:\windows\Resources\1010.exe
- Perform a full scan of the computer using Kaspersky Anti-Virus with up-to-date antivirus databases (download a trial version).
MD5: C68E13B3110B7108C01DC3807A0070E6
SHA1: 4481B06DE14144D5F39005ED011D84EF28AE2B47
Programs classified as Trojan-Downloader download and install new versions of malicious programs, including Trojans and AdWare, on victim computers. Once downloaded from the Internet, the programs are launched or included on a list of programs which will run automatically when the operating system boots up.
Information about the names and locations of the programs which are downloaded are in the Trojan code, or are downloaded by the Trojan from an Internet resource (usually a web page).
This type of malicious program is frequently used in the initial infection of visitors to websites which contain exploits.
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