Decoding Nachi

By Larry Seltzer  |  Posted 2004-02-12 Print this article Print

.Bs Political Message."> At the same time, Nachi.B is making a political and educational point. If the machine has a Microsoft IIS (Internet Information Services) Web server and is configured for the Japanese code page, Nachi.B overwrites certain files with an HTML page containing the following text:

1937.12.13 300,000 !
1945.8.6 Little boy
1945.8.9 Fatso 1945.8.15
Let history tell future !
So whats all this about? The numbers arent URLs. Rather, they are dates that relate to World War II. Security vendor iDEFENSE Inc. deciphered the page. Heres the key:
  • September 18, 1931. Japan invaded Manchuria, renames it Manchukuo.
  • July 7, 1937. The Japanese army attacked China in the "Marco Polo Bridge Incident."
  • December 13, 1937. The Battle of Nanjing ended as the Japanese took the city and commenced three months of atrocities.
  • December 7, 1941. The attack on Pearl Harbor.
  • August 6, 1945. The United States dropped the "Little boy" atomic bomb on Hiroshima.
  • August 9, 1945. The "Fat man" bomb struck Nagasaki.
  • August 15, 1945. Victory in Japan (VJ Day) riot in San Francisco while the city was celebrating.
  • August 15, 1945. South Korea liberated from Japanese rule.
According to iDEFENSE, this message "may be an attempt to elude[sic] to current activities about countries currently in political conflict with the U.S." I find it hard to tell exactly what the authors attitude is.

Still, nothing that has happened so far will victimize an installation that is administered intelligently and diligently. Apply patches and dont be stupid about your e-mail and your site should still be safe. However, that advice ignores the existing MyDoom and Doomjuice threats continuing to launch distributed denial-of-service attacks on Microsoft and The SCO Groups sites. But thats a different story.

Security Center Editor Larry Seltzer has worked in and written about the computer industry since 1983. Be sure to check out eWEEK.coms Security Center at for the latest security news, views and analysis.

More from Larry Seltzer

Larry Seltzer has been writing software for and English about computers ever since—,much to his own amazement—,he graduated from the University of Pennsylvania in 1983.

He was one of the authors of NPL and NPL-R, fourth-generation languages for microcomputers by the now-defunct DeskTop Software Corporation. (Larry is sad to find absolutely no hits on any of these +products on Google.) His work at Desktop Software included programming the UCSD p-System, a virtual machine-based operating system with portable binaries that pre-dated Java by more than 10 years.

For several years, he wrote corporate software for Mathematica Policy Research (they're still in business!) and Chase Econometrics (not so lucky) before being forcibly thrown into the consulting market. He bummed around the Philadelphia consulting and contract-programming scenes for a year or two before taking a job at NSTL (National Software Testing Labs) developing product tests and managing contract testing for the computer industry, governments and publication.

In 1991 Larry moved to Massachusetts to become Technical Director of PC Week Labs (now eWeek Labs). He moved within Ziff Davis to New York in 1994 to run testing at Windows Sources. In 1995, he became Technical Director for Internet product testing at PC Magazine and stayed there till 1998.

Since then, he has been writing for numerous other publications, including Fortune Small Business, Windows 2000 Magazine (now Windows and .NET Magazine), ZDNet and Sam Whitmore's Media Survey.

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