Feeds

Fake subpoenas harpoon 2,100 corporate fat cats

From phishing to whaling

  • alert
  • submit to reddit

Security for virtualized datacentres

A highly targeted email scam that singled out as many as 20,000 senior corporate executives on Monday resurfaced Wednesday as attackers sought to replicate their success installing identity-stealing software on the PCs of some of the world's most powerful individuals.

Like the first volley of emails, these latest messages masquerade as an official subpoena requiring the recipient to appear before a federal grand jury. The emails correctly address CEOs and other high-ranking executives by their full name and include their phone number and company name, according to Matt Richard, director of rapid response at iDefense, a division of VeriSign that helps protect financial institutions from fraud.

Recipients who click on a link that offers a more detailed copy of the subpoena are taken to a website that informs them they must install a browser add-on in order to read the document. Clicking "yes" installs a backdoor and key logging software that steals log-in credentials used on websites for banks and other sensitive organizations.

About 2,000 executives took the bait on Monday, and an additional 70 have fallen for the latest scam, Richard said. Operating under the assumption that as many as 10 percent of recipients fell for the ruse, he estimated that 21,000 executives may have received the email. Only eight of the top 35 anti-virus products detected the malware on Monday, and on Wednesday, only 11 programs were flagging the new payload, which has been modified to further evade being caught.

The group behind the attack is the same one that has launched other high-profile spear-phishing expeditions, in which a relatively small number of emails are tailored to their targets by including their names, titles and other personal information. The customization is designed to fool the recipients into believing they are legitimate. The practice of targeting CEO and other high-ranking execs is being dubbed as whaling.

The malware installed from Monday's attack caused infected PCs to report to a server based in Singapore. The updated trojan had machines reporting to servers in China, Richard said. In both cases, the IP addresses of attackers' servers were controlled by a group that goes by the name Piradius, among others.

Previous spear-phishing attacks by these attackers involved emails purporting to contain a complaint from the Better Business Bureau that tricked more than 1,400 executives into installing malware that stole their personal details. More recently, they pulled off a similar scam that falsely claimed to reference a complaint a business associate filed with the Justice Department.

The group is also responsible for attacks that use stolen customer lists to target individuals who have done business with a particular organization. That allows the attackers to masquerade as sales and support representatives from a company the recipient has a relationship of trust with, making it more likely the victim will agree to install malware or divulge sensitive information.

"That's probably one of their better attacks," Richard said. "It's extremely hard for them to pull off because they need to steal the customer database first."

In earlier attacks, the emails were more convincing because the English grammar and syntax were nearly flawless. The emails in most recent attacks were less polished, Richard said. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
NASTY SSL 3.0 vuln to be revealed soon – sources (Update: It's POODLE)
So nasty no one's even whispering until patch is out
Russian hackers exploit 'Sandworm' bug 'to spy on NATO, EU PCs'
Fix imminent from Microsoft for Vista, Server 2008, other stuff
Forget passwords, let's use SELFIES, says Obama's cyber tsar
Michael Daniel wants to kill passwords dead
FBI boss: We don't want a backdoor, we want the front door to phones
Claims it's what the Founding Fathers would have wanted – catching killers and pedos
Kill off SSL 3.0 NOW: HTTPS savaged by vicious POODLE
Pull it out ASAP, it is SWISS CHEESE
Facebook slurps 'paste sites' for STOLEN passwords, sprinkles on hash and salt
Zuck's ad empire DOESN'T see details in plain text. Phew!
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
Win a year’s supply of chocolate
There is no techie angle to this competition so we're not going to pretend there is, but everyone loves chocolate so who cares.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.