tl:dr – Don’t open any attachments from suspicious emails. Australia Post doesn’t send notifications this way. If you believe you may be infected, turn off the computer and seek professional advice immediately.
Two Ransom-ware outbreaks are happening right now: Australia Post and Cryptowall Attachment.
The spam (distributing Cryptowall 4) is using an obfuscated JavaScript attachment. (Spam mails are already detected by the latest AS full pattern 2092).
The obfuscated JavaScript downloads malicious content from URLs such as: hxxp://dertinyanl.com/img/script.php?tup1.jpg … hxxp://yalcingulten.com/dbsys.php
At the present we have seen 85 fake Australia Post websites (the list is still growing): hxxp://adventuredmc.com/JXZ9TMtUgiI/VvqyrjDo.php … hxxp://wilanowski.net/uUJTW/9oyONj.php
We advise users:
Not to enter Captcha codes to any postal tracking site
Not to open invoice / refund attachments from email (Cryptowall)
Be especially careful about anything purporting to be a parcel notification or Australia Post (use the phone to call Australia Post and confirm any such email).
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