For about a year I have been receiving spam emails like this one below. They all look like they’ve been sent by private individuals somewhere in the world (usually from Yahoo or Hotmail accounts) but advertise companies in China:
hi:
New shopping new life!
How are u doing these days?Yesterday I found a web of a large trading company from china,which is an agent of all the well-known digital product factories,and facing to both wholesalers,retailsalers,and personal customer all over the world. They export all kinds of digital products and offer most competitive and reasonable price and high quality goods for our clients,so i think we you make a big profit if we do business with them.And they promise they will provide the best after-sales-service.In my opinion we can make a trial order to test that.
Look forward to your early reply!
The Web address: www.vanigo.com
E-mail: vanigo@188.com
MSN : vanigo@msn.cn——————————————————————————–
FĂĽ en billig laptop. Se Kelkoos gode tilbud her!
Looking at the mail headers, it had come from the mail account of a Danish Yahoo user, but originated from an IP address in China (details edited to protect the privacy of the account owner):
Received: from [124.118.179.157] by web26101.mail.ukl.yahoo.com
via HTTP; Wed, 11 Feb 2009 19:54:29 GMT
X-Mailer: YahooMailWebService/0.7.260.1
Date: Wed, 11 Feb 2009 19:54:29 +0000 (GMT)
From: uffe #####sen <uf###2@yahoo.dk>
Reply-To: uf###2@yahoo.dk
Subject: hi:
To: undisclosed recipients: ;
IP address 124.118.179.157 belongs to China Telecom:
inetnum: 124.118.0.0 – 124.119.255.255
netname: CHINANET-XJ
descr: CHINANET Xinjiang province network
descr: China Telecom
descr: No1,jin-rong Street
descr: Beijing 100032
country: CN
What appears to have happened is that spammers know the passwords to these mail accounts and are using them to send that spam to everyone in the mail account’s address book.
This is a very effective way to get through spam filters, as many recipients are likely to also have the sender in their address book and address book entries are automatically whitelisted by many spamfilters.
If you receive an email like that, alert the “sender” that their account has been compromised. They need to immediately change their email password to something more secure.
This abuse of stolen passwords illustrates the potential of password harvesting scams such as this one I documented in August 2008, which is still going on.
Here are some Google searches related to the hacked webmail spam:
Here is a (probably incomplete) list of websites advertised this way:
- gvccn.com
- ibvcn.com
- jvccn.com
- tvtcn.com
- szfac.com
- cxkeg.com
- yaier.com
- mmhdf.com
- ixicb.com
- vanigo.com
- wabada.com
- bj-trade.com
- store-168.com
- ele-motors.com
- electronics-brand.com
- exciting-zone.com
Common subject lines:
- New shopping new life
- Good shopping good mood!
- Good web site
- Have a great shopping!
- good website!
- Hi,Thank you!
- Hi,
- Dear friend
Good passwords and bad passwords
A strong password should be the first line of defense against such criminals, but what makes a password good? It should contain a mixture of all of the following:
- lower case letters
- upper case letters
- digits
- at least one non-alphanumeric character
This makes it hard to break the password through brute force or through dictionary attacks.
Also the password should not be too short (8 characters or more) and should be reasonably easy to memorize, so you don’t have much need to write it down. Some examples:
- 45Knife%Cabbage
- 4F5g6H&j
- J0hn1945-07-31
Bad choices are passwords that consist of any word found in a dictionary, proper names, digits-only dates, adjacent keys on the keyboard or repeated characters. Never use anything like these:
- secret
- qwerty
- xxxx
- john45
It is very important not to use the exact same password for different purposes.
If spammers manage to trick you into revealing your password for one site (e.g. by getting you to create a new account at a site they control or by breaking into the database of another site where you’re a customer) then you’ve effectively handed them the key to the candy store. They can get access to your email account, in which they may find login information, password reminders, etc. of many other sites you’ve signed up for. At the very least they can harvest all your email contacts.
Beyond using different passwords for every site and service, it’s also a good idea to use a different password schema for “core” sites that you trust and depend upon (such as your email provider and webhost) and another for sites to which you sign up more casually (such as various forums, online shopping, etc.). Thus if one of the latter is compromised, it does not give criminals any clues what your more critical passwords may look like.
Who is behind this spam?
The sites advertised from the hacked email accounts constantly vary. They usually have been created only a few weeks or months earlier. For example, the domain in the above example was created two months ago:
Domain name: vanigo.com
Registrant Contact:
wuxianj
xiaos wu zhongfm@it5.cn
0592-5861837 fax: 0592-5861834
beijin
beijin beijin 100000
cnAdministrative Contact:
xiaos wu zhongfm@it5.cn
0592-5861837 fax: 0592-5861834
beijin
beijin beijin 100000
cnTechnical Contact:
xiaos wu zhongfm@it5.cn
0592-5861837 fax: 0592-5861834
beijin
beijin beijin 100000
cnBilling Contact:
xiaos wu zhongfm@it5.cn
0592-5861837 fax: 0592-5861834
beijin
beijin beijin 100000
cnDNS:
ns1.4everdns.com
ns2.4everdns.comCreated: 2008-12-08
Expires: 2009-12-08
Considering the highly illegal way the companies advertised, what are the chances that any order you make at those sites would ever get shipped to you? For sure, they will gladly take your cash by (untraceable, unsafe) Western Union or take your credit card number, expiration date and security code. Never use Western Union to send money to people you don’t know from real life in person. Never enter your credit card on a site that doesn’t have SSL access (indicated by a URL starting with https:// and a padlock icon in the browser status bar) with a proper certificate.
Even more basic: Never do business with spammers. By sending you spam, they have already proven to you that they lack any morals. You have no reason to trust them and every reason to be alert!
If you have received similar spams, feel free to post them below.