Sophos

W32/Rbot-AJD

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Drops more malware
  • Installs itself in the registry
Included in our products from September 2005 (3.97)
Protection available since 28 July 2005 13:17:18 (GMT)
Detected by All Sophos products

Action

More Information

W32/Rbot-AJD is a worm for the Windows platform.

W32/Rbot-AJD spreads by copying itself to network shares protected by weak passwords.

When first run W32/Rbot-AJD copies itself to <System>\explorer16.exe and creates
the file <System>\Limpet.bat which is detected as Troj/BotRun-B.

W32/Rbot-AJD uses Troj/BotRun-B to make additional copies of itself and

Troj/BotRun-B in the following locations:
<system>\Drivers\Limpy.sys
<system>\Drivers\Limpmeister.exe
<system>\Drivers\Casey-17.pif
<system>\Drivers\battlenet-keygen(works-online).com
<system>\Casey-17.pif
<system>\battlenet-keygen(works-online).com
<system>\explorer16.exe

The following registry entries are created to run explorer16.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Limpet
<System>\explorer16.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Limpet
<System>\explorer16.exe

Registry entries are set as follows:

HKCU\Software\Microsoft\OLE
Limpet
<System≫\explorer16.exe

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

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