Worm/RB.101376.14.B - Worm

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Summary

Full description

Statistics

Virus:	Worm/RB.101376.14.B
Date discovered:	15/08/2005
Type:	Worm
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Medium
Damage Potential:	Medium
Static file:	Yes
File size:	101.376 Bytes
MD5 checksum:	ff9b652337043bb7e46f94e50284204f
VDF version:	6.31.1.110

General Method of propagation:
   • Local network

Aliases:
   • Symantec: W32.Spybot.Worm
   • Mcafee: W32/Sdbot.worm.gen.h
   • Kaspersky: Backdoor.Win32.Rbot.gen
   • TrendMicro: WORM_RBOT.CDS
   • F-Secure: W32/Backdoor.EXW
   • VirusBuster: Worm.RBot.CEK
   • Bitdefender: Backdoor.SDBot.054EA1A5

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

Side effects:
   • Downloads malicious files
   • Registry modification
   • Steals information
   • Third party control

Files It copies itself to the following location:
• %SYSDIR%\MSLSA32.exe

It deletes the initially executed copy of itself.

Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below.

Exploit:
It makes use of the following Exploits:
– MS04-011 (LSASS Vulnerability)

IP address generation:
It creates random IP addresses and tries to establish a connection with them.

Infection process:
Creates an FTP script on the compromised machine in order to download the malware to the remote location.

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

Server: ns1.gol**********.com.ar
Port: 65053
Server password: PASS
Channel: #g-scan#
Nickname: [0]USA|%two-digit random character string%
Password: argrulex

Server: ns1.gol**********.com.ar
Port: 65053
Server password: PASS
Channel: #g-down1#
Nickname: [0]USA|%two-digit random character string%
Password: argrulex

Server: ns1.gol**********.com.ar
Port: 65080
Server password: PASS
Channel: #g-down2#
Nickname: [0]USA|%two-digit random character string%
Password: argrulex

– This malware has the ability to collect and send information such as:
    • CPU speed
    • Current user
    • Free disk space
    • Free memory
    • Malware uptime
    • Information about the network
    • Size of memory
    • System directory

– Furthermore it has the ability to perform actions such as:
    • Download file
    • Join IRC channel
    • Kill process
    • Leave IRC channel

Miscellaneous Mutex:
It creates the following Mutex:
• st@ch3ndr4th-l4st-v3r

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 the following runtime packer:
• ASPack 2.12

See a brief description here.

Description inserted by Victor Tone on Thu, 25 Aug 2005 09:28 (GMT+1)
Description updated by Victor Tone on Mon, 29 Aug 2005 08:24 (GMT+1)

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