Internet threat level: 1
Home→Descriptions→Trojan-Downloader.JS.Gumblar.x
Trojan-Downloader.JS.Gumblar.x
| Detected | Oct 19 2009 15:15 GMT |
| Released | Oct 19 2009 23:17 GMT |
| Published | Nov 20 2009 11:31 GMT |
Payload
Removal instructions
Technical Details
This Trojan downloads and runs malicious scripts on the victim machine without the user's knowledge or consent. It is a JavaScript scenario. It is 809 bytes in size.
Payload
When an infected web-page is opened, the Trojan uses Java Script to decrypt its body and launch the malicious scenario for execution. The Trojan uses an HTML tag in an attempt to inject 2 objects into the HTML page. The objects are located here:
http://y***dental.co.kr/bbs/private_board.php?s=iYzjlps7w&id=2 http://y***dental.co.kr/bbs/private_board.php?s=iYzjlps7w&id=3At the time of writing, these links were not active.
Removal instructions
If your computer does not have an up-to-date antivirus, or does not have an antivirus solution at all, follow the instructions below to delete the malicious program:
- Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
- Delete the contents of Temporary Internet Files, as this directory may contain infected files.
- Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).
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.
Trojan-Downloader.
- Packed.
JS. Agent. bg (Kaspersky Lab) - Trojan:
Obfuscated Script. f (McAfee) - Troj/Dldr-CP (Sophos)
- Mal/ObfJS-CN (Sophos)
- JS/Gumblar.
A (Panda) - Trojan:
JS/Gamburl. C (MS(OneCare)) - Trojan.
Script. 419342 (BitDef7) - Trojan.
Script. 246134 (BitDef7) - JS.
Crypt. DMX (VirusBuster) - JS:
Kroxxu-O [Trj] (AVAST) - JS:
Kroxxu-K [Trj] (AVAST) - Trojan-Downloader.
JS. Gumblar (Ikarus) - JS/Redir (AVG)
- HTML/Revir.
Gen (AVIRA) - JS/Dldr.
Gumblar. X. 1 (AVIRA) - Trojan-Downloader.
JS. Gumblar. x [AVP] (FSecure) - JS_GUMBLAR.
SMF (TrendMicro) - Trojan-Downloader.
JS. Gumblar. x (v) (Sunbelt) - JS.
Crypt. DMX (VirusBusterBeta)
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