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	<title>Guganeshan Thambiraja&#039;s blog &#187; Featured Articles</title>
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	<link>http://guganeshan.com/blog</link>
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		<title>Tree leaves becoming &#8220;pinhole cameras&#8221; during the Annular Solar Eclipse.</title>
		<link>http://guganeshan.com/blog/tree-leaves-becoming-pinhole-cameras-during-the-annular-solar-eclipse.html</link>
		<comments>http://guganeshan.com/blog/tree-leaves-becoming-pinhole-cameras-during-the-annular-solar-eclipse.html#comments</comments>
		<pubDate>Fri, 15 Jan 2010 12:01:41 +0000</pubDate>
		<dc:creator>Guganeshan.T</dc:creator>
				<category><![CDATA[Featured Articles]]></category>
		<category><![CDATA[Nature]]></category>
		<category><![CDATA[Astronomy]]></category>
		<category><![CDATA[Interesting]]></category>
		<category><![CDATA[Miscellaneous]]></category>

		<guid isPermaLink="false">http://guganeshan.com/blog/?p=113</guid>
		<description><![CDATA[The longest, annular (like a ring) Solar Eclipse of the millennium happened today (15th January 2010). When the annular eclipse was at its peak in the region from where I was watching it (Nugegoda, Sri Lanka), I saw some peculiar shadows on the ground. It occurred to me only after several seconds that they are [...]]]></description>
			<content:encoded><![CDATA[<p><img style="border-bottom: 0px; border-left: 0px; margin: 0px 15px 0px 0px; border-top: 0px; border-right: 0px" src="http://guganeshan.com/blog/wp-content/uploads/2010/01/annular-solar-eclipse.jpg" border="0" alt="annular solar eclipse" width="115" height="115" align="left" /> The longest, annular (like a ring) <a href="http://en.wikipedia.org/wiki/Solar_eclipse" target="_blank">Solar Eclipse</a> of the millennium happened today (15th January 2010).</p>
<p>When the annular eclipse was at its peak in the region from where I was watching it (Nugegoda, Sri Lanka), I saw some peculiar shadows on the ground. It occurred to me only after several seconds that they are caused by the Solar Eclipse!<span id="more-113"></span></p>
<p>When the sun&#8217;s rays hit the ground passing through small gaps between tree leaves, they create the &#8220;<a href="http://en.wikipedia.org/wiki/Pinhole_camera" target="_blank"><strong>Pinhole Camera</strong></a>&#8221; affect. These are actually <strong>small inverted images of the sun projected on the ground.</strong> Refer the Wikipedia article for more information about the Pinhole Camera: <a title="http://www.wikipedia.org/wiki/Pinhole_camera" href="http://www.wikipedia.org/wiki/Pinhole_camera" target="_blank">http://www.wikipedia.org/wiki/Pinhole_camera</a>.</p>
<p>Checkout these pictures I took at that time:</p>
<p><a href="http://guganeshan.com/blog/wp-content/uploads/2010/01/solar-eclipse-2010-pattern-in-shadows-from-a-tree-1.jpg" target="_blank"><img style="border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px" src="http://guganeshan.com/blog/wp-content/uploads/2010/01/solar-eclipse-2010-pattern-in-shadows-from-a-tree-1_thumb.jpg" border="0" alt="Annular Solar Eclipse 2010 pinhole effect in shadows from a tree" width="640" height="480" /></a></p>
<p><a href="http://guganeshan.com/blog/wp-content/uploads/2010/01/solar-eclipse-2010-pattern-in-shadows-from-a-tree-2.jpg" target="_blank"><img style="border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px" src="http://guganeshan.com/blog/wp-content/uploads/2010/01/solar-eclipse-2010-pattern-in-shadows-from-a-tree-2_thumb.jpg" border="0" alt="Annular Solar Eclipse 2010 pinhole effect in shadows from a tree" width="640" height="480" /></a></p>
<p>It was a beautiful pattern to watch during the dreamy-darkness of the eclipse. The reduced temperature due to the eclipse, felt good on the skin too <img src="http://us.i1.yimg.com/us.yimg.com/i/mesg/emoticons7/1.gif" alt="Happy" /></p>
<p>Get to know when future solar and lunar eclipses would happen from this <strong>NASA eclipse website</strong>: <a title="http://eclipse.gsfc.nasa.gov/eclipse.html" href="http://eclipse.gsfc.nasa.gov/eclipse.html" target="_blank">http://eclipse.gsfc.nasa.gov/eclipse.html</a></p>
<p>Peace.</p>
<div><a class="addthis_button" href="//addthis.com/bookmark.php?v=250" addthis:url='http://guganeshan.com/blog/tree-leaves-becoming-pinhole-cameras-during-the-annular-solar-eclipse.html' addthis:title='Tree leaves becoming &#8220;pinhole cameras&#8221; during the Annular Solar Eclipse. '><img src="//cache.addthis.com/cachefly/static/btn/v2/lg-share-en.gif" width="125" height="16" alt="Bookmark and Share" style="border:0"/></a></div>]]></content:encoded>
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		<title>Infected with a Trojan</title>
		<link>http://guganeshan.com/blog/infected-with-a-tro.html</link>
		<comments>http://guganeshan.com/blog/infected-with-a-tro.html#comments</comments>
		<pubDate>Wed, 04 Jun 2008 07:31:00 +0000</pubDate>
		<dc:creator>Guganeshan.T</dc:creator>
				<category><![CDATA[Featured Articles]]></category>
		<category><![CDATA[Privacy and Security]]></category>
		<category><![CDATA[Anti-virus]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Tips]]></category>
		<category><![CDATA[Troubleshooting]]></category>

		<guid isPermaLink="false">http://guganeshan.com/blog/?p=8</guid>
		<description><![CDATA[Do you see one or more of the following files getting created in the root of every drive you access?: autorun.inf autorun.ini fun.exe download.exe coursework.exe crazya.exe oalvm.com [EDITED ON 10th JUNE] Do you see any of the executables mentioned above (the ones with the .exe or .com extension) running in the &#8216;processes&#8217; list of the [...]]]></description>
			<content:encoded><![CDATA[<ol>
<li>Do you see one or more of the following files getting created in the  root of every drive you access?:
<ul>
<li>autorun.inf</li>
<li>autorun.ini</li>
<li>fun.exe</li>
<li>download.exe</li>
<li>coursework.exe</li>
<li>crazya.exe</li>
<li>oalvm.com [EDITED ON 10th JUNE]<span id="more-8"></span></li>
</ul>
</li>
<li>Do you see any of the executables mentioned above (the ones with the .exe or .com extension) running in the &#8216;processes&#8217; list of the task manager?</li>
<li>Do you get an &#8216;Open with&#8217; dialogue box when you double-click a drive in &#8220;My Computer&#8221;, instead of it getting opened?</li>
<li>Do you see any of the above mentioned executable files in the &#8220;C:\Documents and Settings\All Users\Application Data&#8221; folder?</li>
<li>Do you see the words: &#8220;gods must be creazy&#8221; in the title bar of Internet Explorer? yeah you read it right, it must be written as &#8220;crazy&#8221; but the creator has written it as &#8220;creazy&#8221;! <img src='http://guganeshan.com/blog/wp-includes/images/smilies/icon_smile.gif' alt=':-)' class='wp-smiley' /> </li>
</ol>
<p>Then its time to panic! (a little). Because the computer is infected with a Trojan&#8230;</p>
<p>I am used to the practice of suspending anti-virus software to conserve memory (specially when using memory intensive software like Microsoft Visual Studio) and got the computer infected with a Trojan when I shared my thumb drive with another person!</p>
<p>I thought its just a poor old Trojan that I can remove in a second using the existing anti-virus software, but it didn&#8217;t even detect it.</p>
<p>Terminating the process named crazya.exe was impossible (I even tried the &#8220;<strong>TaskKill</strong>&#8221; DOS command repeatedly in a loop with the /f option to force the termination, but no use.</p>
<p>The biggest surprise came when I Googled the file name &#8220;crazya.exe&#8221;&#8230; I got only 7 results in Google!. Out of which, 1 is from a Chinese web site, and 1 from Sri Lanka itself. That meant trouble for me because it means, either it has no cure or its a new Trojan. But I confirmed its a Trojan only from those 7 results I found (Non of them had a tool to clean it&#8230; but one of them mentioned the well-known <a href="http://en.wikipedia.org/wiki/HijackThis" target="_blank">HijackThis</a> diagnostic tool)</p>
<p>One site named it as: <strong>&#8220;Trojan horse Generic8.GHY&#8221;. </strong>And another one said its from the malware group named: <strong>&#8220;Trojan.agent.gen&#8221;</strong>.</p>
<p>Anyway, what I did to get rid of it was:</p>
<ol>
<li>Ran <a href="http://en.wikipedia.org/wiki/HijackThis" target="_blank">HijackThis</a> (its a free diagnostic tool)</li>
<li>In the list of processes and registry entries it lists, I selected all the entries that had the word &#8220;crazya.exe&#8221; (other executable names were not there for me)</li>
<li>Clicked on the &#8220;<strong>Fix Checked</strong>&#8221; button</li>
<li>Deleted the files I mentioned, manually from the root of every drive</li>
</ol>
<p>That&#8217;s it&#8230; it was gone.</p>
<p><strong><span style="color: #ff0000;">Warning:</span></strong> They recommend users to create a <a href="http://en.wikipedia.org/wiki/HijackThis" target="_blank">HijackThis</a> log from the tool and to post it in anti-adware/malware forums to let the experts diagnose the problem. If you don&#8217;t know what you are doing, you might delete important registry entries using the excellent <a href="http://en.wikipedia.org/wiki/HijackThis" target="_blank">HijackThis</a> tool.</p>
<p>[EDIT: In another PC, HijackThis tool alone was not enough, and I had to restart the PC in 'Safe Mode' and delete the files (mentioned at the beginning of the post) in the root of every drive. Because the files were running in memory.]</p>
<p>Hope this helps someone</p>
<p style="font-weight: bold; color: #ff0000;">UPDATE [on 10th February 2009]:</p>
<p>I tried the latest &#8220;<strong>Kaspersky Anti-Virus 2009</strong><span style="font-weight: bold;"> Free 30 Day Trial</span>&#8221; with an infected thumb drive, and the software detects and deletes the Trojan files. Hope this helps someone (download and try the Kaspersky Anti-Virus 2009 free trial from &#8220;trials&#8221; page here: <a href="http://www.kaspersky.com/trials">http://www.kaspersky.com/trials</a></p>
<p>And thank you very much for the comments.</p>
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