Worm/Small.AG.1 - Worm

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Summary

Full description

Statistics

Virus:	Worm/Small.AG.1
Date discovered:	15/11/2007
Type:	Worm
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low to medium
Damage Potential:	Low
Static file:	Yes
File size:	26.309 Bytes
MD5 checksum:	093a41ac3cf276b9ff0Ace9fb4b13383
IVDF version:	7.00.00.221 - Thu, 15 Nov 2007 15:34 (GMT+1)

General Method of propagation:
   • Mapped network drives

Aliases:
   • Mcafee: W32/Autorun.worm.bc
   • Kaspersky: Worm.Win32.Small.ag
   • F-Secure: Worm.Win32.Small.ag
   • Grisoft: Agent.GLY
   • Eset: Win32/Small.AG
   • Bitdefender: Win32.Worm.Acimex.A

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

Side effects:
   • Access to floppy disk
   • Registry modification

Right after execution the following information is displayed:

Files It copies itself to the following locations:
   • %WINDIR%\system234.exe
   • %TEMPDIR%\mexica.exe
   • %SYSDIR%\mexica.exe
   • %drive%:\imagenes.exe

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

– [HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows]
   • run = %TEMPDIR%\mexica.exe

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • systray = %WINDIR%\system234.exe

The following registry key is changed:

– [HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
   Old value:
   • shell = Explorer.exe
   New value:
   • shell = Explorer.exe %SYSDIR%\mexica.exe

See a brief description here.

Description inserted by Andrei Gherman on Fri, 20 Jun 2008 07:32 (GMT+1)
Description updated by Andrei Gherman on Fri, 20 Jun 2008 07:36 (GMT+1)

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