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The Internet threat alert status is currently normal. At present, no major epidemics or other serious incidents have been recorded by Kaspersky Lab’s monitoring service.

Internet threat level: 1

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Home→Descriptions→Trojan-Downloader.Win32.Small.abn

Trojan-Downloader.Win32.Small.abn

Detected	May 01 2006 10:25 GMT
Released	May 01 2006 10:25 GMT
Published	May 11 2006 15:27 GMT

Technical Details
Payload
Removal instructions

Technical Details

This Trojan is a Windows PE EXE file 2048 bytes in size, written in Assembler.

Payload

This Trojan is launched from the command line with two parameters. The format is approximately as shown below:

TinyDL.exe [full url of file];[path of file]

The Trojan is able to download files via the Internet and launch them on the victim machine. It will also register downloaded files in the system registry to ensure they are launched automatically.

Removal instructions

Delete the original Trojan file (the location depends on how the Trojan penetrated the victim machine).
Update your antivirus databases, and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).

Malicious programs

Trojan-Downloader

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.

Other versions

Trojan-Downloader.Win32.Small.aex

Trojan-Downloader.Win32.Small.anh

Trojan-Downloader.Win32.Small.aoa

Trojan-Downloader.Win32.Small.apc

Trojan-Downloader.Win32.Small.arf

Trojan-Downloader.Win32.Small.asa

Trojan-Downloader.Win32.Small.axk

Trojan-Downloader.Win32.Small.axp

Trojan-Downloader.Win32.Small.bab

Trojan-Downloader.Win32.Small.bah

Trojan-Downloader.Win32.Small.bai

Trojan-Downloader.Win32.Small.bal

Trojan-Downloader.Win32.Small.ban

Trojan-Downloader.Win32.Small.bar

Trojan-Downloader.Win32.Small.bdc

Trojan-Downloader.Win32.Small.bpan

Trojan-Downloader.Win32.Small.bxc

Trojan-Downloader.Win32.Small.bxp

Trojan-Downloader.Win32.Small.cck

Trojan-Downloader.Win32.Small.ccm

Trojan-Downloader.Win32.Small.cdk

Trojan-Downloader.Win32.Small.cfn

Trojan-Downloader.Win32.Small.cg

Trojan-Downloader.Win32.Small.chq

Trojan-Downloader.Win32.Small.cjs

Trojan-Downloader.Win32.Small.ckn

Trojan-Downloader.Win32.Small.cnz

Trojan-Downloader.Win32.Small.cop

Trojan-Downloader.Win32.Small.crb

Trojan-Downloader.Win32.Small.crd

Trojan-Downloader.Win32.Small.cxz

Trojan-Downloader.Win32.Small.cyn

Trojan-Downloader.Win32.Small.cz

Trojan-Downloader.Win32.Small.dam

Trojan-Downloader.Win32.Small.dcj

Trojan-Downloader.Win32.Small.ddp

Trojan-Downloader.Win32.Small.dge

Trojan-Downloader.Win32.Small.dnk

Trojan-Downloader.Win32.Small.dsr

Trojan-Downloader.Win32.Small.eff

Trojan-Downloader.Win32.Small.ehu

Trojan-Downloader.Win32.Small.eir

Trojan-Downloader.Win32.Small.emx

Trojan-Downloader.Win32.Small.epy

Trojan-Downloader.Win32.Small.eqn

Trojan-Downloader.Win32.Small.fas

Trojan-Downloader.Win32.Small.fxl

Trojan-Downloader.Win32.Small.fyn

Trojan-Downloader.Win32.Small.fzu

Trojan-Downloader.Win32.Small.hg

Trojan-Downloader.Win32.Small.jk

Trojan-Downloader.Win32.Small.jm

Trojan-Downloader.Win32.Small.kph

Trojan-Downloader.Win32.Small.laa

Trojan-Downloader.Win32.Small.s

Trojan-Downloader.Win32.Small.tnd

Trojan-Downloader.Win32.Small.tne

Trojan-Downloader.Win32.Small.tor

Trojan-Downloader.Win32.Small.tos

Trojan-Downloader.Win32.Small.ydh

Trojan-Downloader.Win32.Small.yk

Trojan-Downloader.Win32.Small.yt

Trojan-Downloader.Win32.Small.yx

Aliases

Trojan-Downloader.Win32.Small.abn (Kaspersky Lab) is also known as:

App: Downloader-SX (McAfee)
Mal/DownLdr-AC (Sophos)
W32/Downloader-Sml!Eldorado (FPROT)
TrojanDownloader:Win32/Small (MS(OneCare))
Tool.LoadDown (DrWeb)
Win32/TrojanDownloader.Small.NLD trojan (Nod32)
Trojan.Generic.49647 (BitDef7)
Win32:Small-CYQ [Trj] (AVAST)
Trojan-Downloader.Win32.Small (Ikarus)
Downloader.Generic2.AII (AVG)
TR/Dldr.Small.abm (AVIRA)
W32/DLoader.ZEN (Norman)
Possible_DLDER (PCCIL)
Trojan.DL.Small.EBI (Rising)
Trojan-Downloader.Win32.Small.abn [AVP] (FSecure)
HKTL_SMALL.C (TrendMicro)