F-Secure Virus Descriptions : W32/Buchon@mm
[Summary] | [Detailed Description] | [Detection]
W32/Buchon@mm worm was found on October 21st, 2004. This variant is probably a
hack made in South Korea.
It was originally identified as Netsky, but all major Antivirus vendors realized
it has not much to do with that family besides some similarities in the emails
it sends. Therefore the new name is Buchon.
The worm is packed with an unmodified version of UPX, once unpacked it grows to
around 60 KiB
This worm contains two hidden strings: "SoonChunHyang" and "Bucheon".
There's a University called SoonChunHyang in the city of Bucheon, South Korea.
This virus is buggy and fails to replicate properly.
Email messages W32/Buchon@mm tries to send can vary a lot. In some cases it
sends somewhat personalized messages looking like this:
From: randomaddress@somewhere.com
To: bob@acme.com
Subject: Mail Delivery failure - bob@acme.com
If the message will not displayed automatically,
. you cancheck original in attached message.txt
www.acme.com/inbox/security/read.asp?sessionid-5339
Attachment: "message.txt mcafee.com"
W32/Buchon@mm searches local drives for e-mail addresses. Files with following
extensions are scanned for e-mail addresses:
.dbx
.wab
.mbx
.eml
.mdb
.tbb
The worm also drops a keylogger.
F-Secure AntiVirus detects W32/Buchon@mm with update 2004-10-21_03.
[FSAV_Database_Version]
Version=2004-10-21_03
Write-up:
Mikko Hypponen, October 21st, 2004.
Updated:
Ero Carrera, October 22nd, 2004.
F-Secure Corporation
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