Feeds

Phishing Trojan plays ping-pong with captured data

Hide and seek

The Essential Guide to IT Transformation

Security researchers have identified a new Trojan which sends data back to attackers via an unconventional communications protocol (for malware) in a bid to escape detection.

The as-yet unnamed phishing Trojan transmits stolen information back to hackers via ICMP (Internet Control Message Protocol) packets instead of email or HTTP packets, the standard route for transmitting purloined information.

After infecting a victim's computer, the Trojan is programmed to install itself as an Internet Explorer Browser Helper Object (BHO). The software then waits for a victim to post sensitive data online. This data, once entered, is captured by the Trojan and sent to attackers.

Instead of using email or HTTP POST requests, the Trojan encodes purloined data using a simple XOR algorithm before placing it into the data section of an ICMP ping packet.

"To network administrators and egress filters, this ICMP packet looks like legitimate traffic leaving the network. However, the ICMP packet actually contains encoded personal information entered by a user. The attackers presumably capture this packet at their remote server, where the packet is easily decoded to reveal the information entered by the user," reports web security firm Websense, which analysed the behaviour of the Trojan after being among the first to receive samples of the malware code. ®

Build a business case: developing custom apps

More from The Register

next story
14 antivirus apps found to have security problems
Vendors just don't care, says researcher, after finding basic boo-boos in security software
'Things' on the Internet-of-things have 25 vulnerabilities apiece
Leaking sprinklers, overheated thermostats and picked locks all online
iWallet: No BONKING PLEASE, we're Apple
BLE-ding iPhones, not NFC bonkers, will drive trend - marketeers
Only '3% of web servers in top corps' fully fixed after Heartbleed snafu
Just slapping a patched OpenSSL on a machine ain't going to cut it, we're told
Multipath TCP speeds up the internet so much that security breaks
Black Hat research says proposed protocol will bork network probes, flummox firewalls
How long is too long to wait for a security fix?
Synology finally patches OpenSSL bugs in Trevor's NAS
Israel's Iron Dome missile tech stolen by Chinese hackers
Corporate raiders Comment Crew fingered for attacks
Fiendishly complex password app extension ships for iOS 8
Just slip it in, won't hurt a bit, 1Password makers urge devs
Tor attack nodes RIPPED MASKS off users for 6 MONTHS
Traffic confirmation attack bared users' privates - but to whom?
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.
Maximize storage efficiency across the enterprise
The HP StoreOnce backup solution offers highly flexible, centrally managed, and highly efficient data protection for any enterprise.