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Virus:TR/Dldr.Small.ceo.3
Date discovered:11/01/2006
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:6.688 Bytes
MD5 checksum:9c27ce60ab4db4ec2a482a86ac1a7852
VDF version:6.33.00.100

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  TrendMicro: BKDR_BREPLIBOT.T
   •  Sophos: Troj/IRCBot-CX
   •  Bitdefender: Backdoor.IRCBot.DY


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


Side effects:
   • Registry modification
   • Third party control

 Files It copies itself to the following location:
   • %SYSDIR%\smsbvl32.exe



The following file is created:

%TEMPDIR%\%three-digit random character string%.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.

 Registry The following registry keys are added in order to run the processes after reboot:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
   • "ApplicationProtocolRun"="smsbvl32.exe"

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • "ApplicationProtocolRun"="smsbvl32.exe"

 IRC To deliver system information and to provide remote control it connects to the following IRC Servers:

Server: 129.**********.51.80
Port: 8080
Channel: #bce
Nickname: [0003-XP]%nine-digit random character string%

Server: 24.116.**********.59
Port: 8080
Channel: #bce
Nickname: [0003-XP]%nine-digit random character string%

Server: 140.**********.165.185
Port: 8080
Channel: #bce
Nickname: [0003-XP]%nine-digit random character string%

Server: 140.**********.35.85
Port: 8080
Channel: #bce
Nickname: [0003-XP]%nine-digit random character string%

Server: 70.136.**********.76
Port: 8080
Channel: #bce
Nickname: [0003-XP]%nine-digit random character string%



 This malware has the ability to collect and send the following information:
    • Malware uptime


 Furthermore it has the ability to perform actions such as:
    • Download file
    • Execute file

 Miscellaneous Mutex:
It creates the following Mutex:
   • smsbvl32.exe

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

Description inserted by Irina Boldea on Wednesday, January 11, 2006
Description updated by Irina Boldea on Wednesday, January 11, 2006

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