Virus:TR/Dldr.Small.cap
Date discovered:14/12/2005
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:5.452 Bytes
MD5 checksum:de13273c76bbe626416d92fc9fd6d336
VDF version:6.33.00.25

 General Method of propagation:
   • No own spreading routine


Alias:
   •  Kaspersky: Email-Worm.Win32.Locksky.l


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads malicious files

 Files It tries to download some files:

– The location is the following:
   • http://193.**********6/manual/misc/xp_0028.exe
It is saved on the local hard drive under: %TEMPDIR%\dmx%hex number%.tmp Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: Worm/Locksky.K.6


– The location is the following:
   • http://193.**********6/manual/misc/xp_d19.exe
It is saved on the local hard drive under: %TEMPDIR%\dmx%hex number%.tmp Furthermore this file gets executed after it was fully downloaded. Detected as: TR/Dldr.Agent.abh


– The location is the following:
   • http://193.**********6/manual/misc/tool.exe
It is saved on the local hard drive under: %TEMPDIR%\dmx%hex number%.tmp Furthermore this file gets executed after it was fully downloaded.

– The location is the following:
   • http://193.**********6/manual/misc/9x_9801.exe
It is saved on the local hard drive under: %TEMPDIR%\dmx%hex number%.tmp Furthermore this file gets executed after it was fully downloaded. Detected as: TR/Spy.Tofger.AT.07


– The location is the following:
   • http://193.**********6/manual/misc/9x_d19.exe
It is saved on the local hard drive under: %TEMPDIR%\dmx%hex number%.tmp Furthermore this file gets executed after it was fully downloaded. Detected as: TR/Dldr.Agent.abh

 File details Programming language:
 The malware program was written in MS Visual C++.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Daniel Constantin on Friday, December 16, 2005
Description updated by Daniel Constantin on Tuesday, December 20, 2005

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