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  • Google disrupted hacking campaigns carried out by Iran-linked APT42

Google disrupted hacking campaigns carried out by Iran-linked APT42

Pierluigi Paganini August 15, 2024

Google disrupted a hacking campaign carried out by the Iran-linked APT group APT42 targeting the US presidential election.

Google announced that it disrupted a hacking campaign carried out by Iran-linked group APT42 (Calanque, UNC788) that targeted the personal email accounts of individuals associated with the US elections.

APT42 focuses on highly targeted spear-phishing and social engineering techniques, its operations broadly fall into three categories, credential harvesting, surveillance operations, and malware deployment.

Microsoft has been tracking the threat actors at least since 2013, but experts believe that the cyberespionage group has been active since at least 2011. 

In May and June, nation-state actors targeted former US government officials and individuals associated with the election campaigns of President Biden and former President Trump.

Google announced to have detected and blocked numerous attempts to log in to the personal email accounts of targeted individuals.

“In the current U.S. Presidential election cycle, TAG detected and disrupted a small but steady cadence of APT42’s Cluster C credential phishing activity. In May and June, APT42 targets included the personal email accounts of roughly a dozen individuals affiliated with President Biden and with former President Trump, including current and former officials in the U.S. government and individuals associated with the respective campaigns.” reads the report published by Google.

Some public reports confirm that APT42 has successfully breached accounts across multiple email providers. Google TAG experts reported that the APT group successfully gained access to the personal Gmail account of a high-profile political consultant.

Last week, Donald Trump’s presidential campaign announced it was hacked, a spokesman attributed the attack to foreign sources hostile to the United States. The presidential campaign believes that Iran-linked threat actors may be involved in the cyber operation that is aimed at stealing and distributing sensitive documents. At this time, no specific evidence was provided.

The media outlet POLITICO first reported the hack, it became aware of the security breach after receiving emails from an anonymous account with documents from inside Trump’s operation.

The Trump campaign cited an incident that occurred in June where an Iran-linked APT, Mint Sandstorm, sent a spear-phishing email to a high-ranking campaign official from a compromised account.

The campaign cited a Microsoft report published on Friday that linked Iranian hackers to the spear phishing email sent to an official on a presidential campaign.

“Recent activity suggests the Iranian regime — along with the Kremlin — may be equally engaged in election 2024,” states Microsoft’s report.

APT42 uses social engineering tactics to trick targets into setting up video meetings, which then lead to phishing pages. Attackers used fake Google Meet pages, and lures involving OneDrive, Dropbox, and Skype. In the last six months Google has successfully disrupted the use of Google Sites in over 50 campaigns carried out APT42. Threat actors also used legitimate PDFs to build trust, eventually directing targets to communicate on platforms like Signal or Telegram, where phishing kits are sent to steal credentials.

APT42 employed several phishing kits targeting a variety of sign-on pages including:

  • GCollection, LCollection, and YCollection are advanced credential harvesting tools designed to collect login information from Google, Hotmail, and Yahoo users. Since their initial observation in January 2023, these tools have been continuously updated to handle multi-factor authentication, device PINs, and recovery codes for all three platforms. The toolkit includes various landing page URLs associated with its indicators of compromise.
  • DWP: a browser-in-the-browser phishing kit often delivered via URL shortener that is less full featured than GCollection.

APT42’campaings relies on detailed reconnaissance to target personal email addresses that may lack robust security measures. The attackers research the security settings of their targets’ email accounts, using failed login or recovery attempts to understand authentication factors, and adapt their phishing kits accordingly. This approach ensures their attacks appear legitimate, often including geographic location data to avoid detection. Once gained access to the accounts, the Iranian hackers typically modified account settings to enhance their control, such as changing recovery email addresses and exploiting application-specific passwords. Google’s Advanced Protection Program helps mitigate this by disabling these passwords.

“As we outlined above, APT42 is a sophisticated, persistent threat actor and they show no signs of stopping their attempts to target users and deploy novel tactics.” concludes the report. “This spring and summer, they have shown the ability to run numerous simultaneous phishing campaigns, particularly focused on Israel and the U.S. As hostilities between Iran and Israel intensify, we can expect to see increased campaigns there from APT42.”

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, APT)


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