Insights and analysis by Jindrich Karasek
Last year, we observed attacks launched to steal high-profile Instagram accounts . Now, attacks of a similar nature are on the rise again, this time using new lures to achieve the same goal. Both strikes involve a group of Turkish-speaking hackers who seized Instagram accounts through credential phishing emails posing as legitimate messages from Instagram.
The group exploited their usual targets of celebrities, startup business owners, and other entities that have a sizeable following on a social media platform. Previously, we examined the case of a hacked photographer. This time, the new techniques have been unveiled through the case of a police officer with more than 16,000 followers.
Aside from their use as personal social media accounts, Instagram pages serve as marketing tools for influencers and businesses. Instagram accounts with a large following are then indicative of credibility and clout. In turn, such accounts become an attractive target for threat actors who can use these for different nefarious purposes, such as blackmailing the hacked parties, propagating scams, or simply showing off their capability as hackers.
Both the previous scheme and the current one rely on a common strategy: harvesting credentials and using these to abuse Instagram’s account recovery process to take control of accounts.
The past campaigns used emails requesting the user to confirm their account so that they can receive a verified badge . However, selecting the “Verify Account” button leads to a phishing page that harvests the user’s email address, credentials, and date of birth. Upon harvesting these, the threat actors have all the details they need to modify the information for recovering a stolen account.
In the new scheme, the message is sent not via email, but through a direct message on Instagram’s platform itself. The message, supposedly sent from Instagram Help Center, claims that a copyright violation complaint has been filed against the account owner whose account, as a result, is now at risk of being deleted. The message also provides a link which masquerades as a form for sending an appeal but which is actually a phishing link.
Opening the link leads to a page where the user will be requested to provide their username. As of writing, the form has no data validation, meaning that any input — even a non-existent account or no input at all — would be accepted.
Once the user selects the “Next” button, another screen appears, this time asking for more information such as known name, password, email, and email password.
After the user selects the “Continue as (username)” button, the page redirects to the legitimateInstagram login page. If the user was already logged in to the social media site before tapping the said button, the form then redirects to their homepage. This gives the illusion that the form they filled out is officially connected to Instagram.
At this point, the hacker can commence taking over the account. The credentials harvested from the phishing link will now be used to change the email linked to the account. The original user will receive an email informing them that the email address linked to their Instagram account has been changed. However, since the hackers already have a hold of the user’s email credentials, they can also take control of the original owner’s email.
The hackers will also unlink the original account owner’s cellphone number to the account.
Cybercriminals never seem to run out of novel strategies while still making the most of tried-and-tested ones to enable their credential phishing schemes. However, enterprises and users can avoid being lured by hackers by following these simple steps:
Here are our recommended security solutions for combatting phishing attacks:
Other URLs linked to the IP address can be viewed in the appendix .
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In the first half of this year, cybersecurity strongholds were surrounded by cybercriminals waiting to pounce at the sight of even the slightest crack in defenses to ravage valuable assets. View the report
The upheavals of 2020 challenged the limits of organizations and users, and provided openings for malicious actors. A robust cybersecurity posture can help equip enterprises and individuals amid a continuously changing threat landscape. View the 2020 Annual Cybersecurity Report
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Insights and analysis by Jindrich Karasek