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Malware Defense History

by Dr. Nikolai Bezroukov.

Copyright: Dr. Nikolai Bezroukov 1994-2013. Unpublished notes. Version 0.80.October, 2013

Contents : Foreword : Ch01 : Ch02 : Ch03  : Ch04 : Ch05 : Ch06 : Ch07 : Ch08 : Ch09 : Ch10 : Ch11 : Ch12 : Ch13


Ch10: Remote Access Trojans and Zombie Networks

W32/Sdbot-AAQ

Ticket 14: workstation ................. d3cvzv01 ( 2 infections detected )

Note: ticket should already exist for this infection:

the number of periods this workstation is marked as infected is 4

Virus/Worm description: ......... backdoor.win32.sdbot.aad

The last action: ................ File deleted

First detection: ................ 2007:01:19 04:04:15

Last detection: ................. 2007:01:19 04:04:15

User(s): ........................ xxxx

Recently infected_file(s):

c:\863.exe

Virus/Worm description: ......... backdoor.win32.rbot.bur

The last action: ................ File deleted

First detection: ................ 2007:01:21 03:55:24

Last detection: ................. 2007:01:21 03:55:24

User(s): ........................ xxxxx

Recently infected_file(s):

c:\winnt\system32\tftp4084

Summary

 
 
Name W32/Sdbot-AAQ
Type
How it spreads
  • Network shares
  • Chat programs
Affected operating systems
  • Windows
Side effects
  • Allows others to access the computer
  • Modifies data on the computer
  • Steals information
  • Drops more malware
  • Downloads code from the internet
  • Reduces system security
Aliases
  • Backdoor.Win32.SdBot.aad
  • WORM_SDBOT.BRQ
Protection available since 15 July 2005 08:02:31 (GMT)
Detected by All versions of Sophos Anti-Virus
Included in our products from September 2005 (3.97)

Description

 

This section helps you to understand how it behaves

W32/Sdbot-AAQ is a worm and IRC backdoor Trojan for the Windows platform.

W32/Sdbot-AAQ spreads to other network computers by:

- copying itself to network shares protected by weak passwords

- sending itself over AOL Instant Messenger

- exploiting common buffer overflow vulnerabilites, including:

LSASS (MS04-011),
RPC-DCOM (MS04-012),
WKS (MS03-049) (CAN-2003-0812) and
MSSQL (MS02-039) (CAN-2002-0649)

W32/Sdbot-AAQ runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.

W32/Sdbot-AAQ includes functionality to:

- access the internet and communicate with a remote server via HTTP
- carry out DDoS flooder attacks
- provide a proxy server
- stealth its services by using any existing process with the name "mIRC" or "mIRC32"
- silently download, install and run new software, including updates of its software

When first run W32/Sdbot-AAQ creates the file <System>\rdriv.sys.

The file rdriv.sys is detected as Troj/Rootkit-W. W32/Sdbot-AAQ then uses the dropped file rdriv.sys to stealth itself.

The following patches for the operating system vulnerabilities exploited by W32/Sdbot-AAQ can be obtained from the Microsoft website:

MS03-049

MS04-011

MS04-012

MS02-039

 

This section contains the description and advanced technical information

W32/Sdbot-AAQ is a worm and IRC backdoor Trojan for the Windows platform.

W32/Sdbot-AAQ spreads to other network computers by:

- copying itself to network shares protected by weak passwords

- sending itself over AOL Instant Messenger

- exploiting common buffer overflow vulnerabilites, including:

LSASS (MS04-011),
RPC-DCOM (MS04-012),
WKS (MS03-049) (CAN-2003-0812) and
MSSQL (MS02-039) (CAN-2002-0649)

W32/Sdbot-AAQ runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.

W32/Sdbot-AAQ includes functionality to:

- access the internet and communicate with a remote server via HTTP
- carry out DDoS flooder attacks
- provide a proxy server
- stealth its services by using any existing process with the name "mIRC" or "mIRC32"
- silently download, install and run new software, including updates of its software

When first run W32/Sdbot-AAQ copies itself to <Windows>\image.exe and creates the file <System>\rdriv.sys.

W32/Sdbot-AAQ may also copy itself to:

<AOL Instant Messenger path>\info.backup
<AOL Instant Messenger path>\info.htm

if it detects the presence of AOL Instant Messenger.

The file rdriv.sys is detected as Troj/Rootkit-W. W32/Sdbot-AAQ then uses the dropped file rdriv.sys to stealth itself.

The file image.exe is registered as a new system driver service named "image", with a display name of "WIN32" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\image\

The file rdriv.sys is registered as a new system driver service named "rdriv", with a display name of "rdriv". Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\rdriv\

W32/Sdbot-AAQ sets the following registry entries, disabling the automatic startup of other software:

HKLM\SYSTEM\CurrentControlSet\Services\Messenger
Start
4

HKLM\SYSTEM\CurrentControlSet\Services\RemoteRegistry
Start
4

HKLM\SYSTEM\CurrentControlSet\Services\TlntSvr
Start
4

Registry entries are set as follows:

HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
DoNotAllowXPSP2
1

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

HKLM\SYSTEM\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings
ProxyEnable
1

HKLM\SYSTEM\CurrentControlSet\Hardware Profiles\Current\Software\Microsoft\windows\CurrentVersion\Internet Settings
ProxyEnable
1

Registry entries are also created to disable Windows system related processes:

HKLM\SOFTWARE\Microsoft\Security Center
AntiVirusDisableNotify
00000001

HKLM\SOFTWARE\Microsoft\Security Center
AntiVirusOverride
00000001

HKLM\SOFTWARE\Microsoft\Security Center
FirewallDisableNotify
00000001

HKLM\SOFTWARE\Microsoft\Security Center
FirewallOverride
00000001

HKLM\SOFTWARE\Microsoft\Security Center
UpdatesDisableNotify
00000001

HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile
EnableFirewall
00000000

HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile
EnableFirewall
00000000

HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
DoNotAllowXPSP2
00000001

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update
AUOptions
00000001

HKLM\CurrentControlSet\Services\lanmanserver\parameters
AutoShareServer
00000000

HKLM\CurrentControlSet\Services\lanmanserver\parameters
AutoShareWks
00000000

HKLM\SYSTEM\CurrentControlSet\Services\lanmanworkstation\parameters
AutoShareServer
00000000

HKLM\SYSTEM\CurrentControlSet\Services\lanmanworkstation\parameters
AutoShareWks
00000000

The following patches for the operating system vulnerabilities exploited by W32/Sdbot-AAQ can be obtained from the Microsoft website:

MS03-049

MS04-011

MS04-012

MS02-039



Etc

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Society

Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers :   Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism  : The Iron Law of Oligarchy : Libertarian Philosophy

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Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 :  Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method  : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law

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Classic books:

The Peter Principle : Parkinson Law : 1984 : The Mythical Man-MonthHow to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Haterís Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite

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The Last but not Least


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