Internet threat level: 1
Home→Descriptions→Trojan-Downloader.Win32.Small.chq
Trojan-Downloader.Win32.Small.chq
| Detected | Mar 21 2006 15:10 GMT |
| Released | Mar 21 2006 15:10 GMT |
| Published | Mar 30 2006 13:32 GMT |
Payload
Technical Details
The Trojan program downloads files via the Internet without the user's knowledge or consent. The Trojan itself is a Windows PE EXE file 27648 bytes in size, written in C++ and packed using UPX. The unpacked file is approximately 73KB in size.
Payload
Once launched, the Trojan registers itself in the system register as a service named WintUPp. This ensures that the Trojan will be launched each time the operating system is loaded.
The Trojan creates a new folder called WintUP in the directory where the original Trojan executable file is located. A file is then downloaded to thie folder from URL http://**.152.108.37/wint/update.ini. This file contains URLs which other malicious programs will then be downloaded from.
Downloaded files will be saved to the WintUP folder.
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.
- Trojan:
Downloader. gen. a (McAfee) - Mal/Generic-L (Sophos)
- Trojan.
Downloader-2043 (ClamAV) - Adware/Borlander (Panda)
- W32/DldrX.
OOD (FPROT) - TrojanDownloader:
Win32/Small (MS(OneCare)) - Adware.
Borlander (DrWeb) - Win32/TrojanDownloader.
Small. CHQ trojan (Nod32) - Trojan.
Downloader. Small. CHQ (BitDef7) - FILE_BROKEN (VirusBuster)
- Trojan.
DL. Agent!7vhjlZkt95s (VirusBuster) - Win32:
Small-WC [Trj] (AVAST) - Trojan-Downloader.
Win32. Small (Ikarus) - Downloader.
Generic. VRH (AVG) - DR/Dldr.
Small. chq. 1 (AVIRA) - ADSPY/Borlander (AVIRA)
- Downloader.
Trojan (NAV) - W32/DLoader.
VEX (Norman) - DLoader.
ETAI (Norman) - Downloader.
gen. a (NAI) - [Suspicious] (Rising)
- TROJ_DLOADER.
TOU (TrendMicro) - Trojan.
Win32. Generic!BT (Sunbelt) - FILE_BROKEN (VirusBusterBeta)
- Trojan.
DL. Agent!7vhjlZkt95s (VirusBusterBeta)
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