BlueNoroff APT Hackers Utilizing New Methods to Bypass Home windows MotW Safety | Giga Tech

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December 27, 2022ravie lakshmananCyber ​​Assault / Home windows Safety

Bypass Windows MotW Protection

bluenoroffa sub-cluster of the infamous Lazarus Group, has been noticed adopting new methods in its playbook that permit it to bypass Home windows internet model (MotW) protections.

This consists of using optical disk (.ISO extension) and digital onerous disk (.VHD extension) picture file codecs as a part of a brand new an infection chain, Kaspersky revealed in a report printed right now.

“BlueNoroff created quite a few pretend domains by posing as enterprise capital companies and banks,” mentioned safety researcher Seongsu Park, including that the brand new assault process was flagged in its telemetry in September 2022.

A number of the pretend domains have been discovered to imitate ABF Capital, Angel Bridge, ANOBAKA, Financial institution of America, and Mitsubishi UFJ Monetary Group, most of that are positioned in Japan, indicating “heavy curiosity” within the area.

Additionally known as by the names APT38, Nickel Gladstone, and Stardust Chollima, BlueNoroff is a part of the bigger Lazarus menace group that additionally consists of Andariel (also referred to as Nickel Hyatt or Silent Chollima) and Labyrinth Chollima (also referred to as Nickel Academy).

The menace actor’s monetary motivations versus espionage have made it an uncommon nation-state actor within the menace panorama, permitting for “wider geographic dispersion” and permitting it to infiltrate organizations in North and South America. South, Europe, Africa and Asia.

cyber security

Since then, it has been related to high-profile cyberattacks focusing on the SWIFT banking community between 2015 and 2016, together with the daring Bangladesh Financial institution heist in February 2016 that led to the theft of $81 million.

Lazarus Group

Since not less than 2018, BlueNoroff seems to have undergone a tactical shift away from putting banks to focus solely on cryptocurrency entities to generate illicit income.

To that finish, Kaspersky earlier this yr revealed particulars of a marketing campaign dubbed SnatchCrypto orchestrated by the adversary collective to empty digital funds from victims’ cryptocurrency wallets.

One other key exercise attributed to the group is AppleJeus, by which pretend cryptocurrency firms are established to lure unwitting victims into putting in benign-looking apps that finally obtain backdoor updates.

The newest exercise recognized by the Russian cybersecurity firm introduces slight modifications to transmit its ultimate payload, exchanging Microsoft Phrase doc attachments for ISO information in phishing emails to set off an infection.

These optical picture information, in flip, comprise a Microsoft PowerPoint slide present (.PPSX) and a Visible Fundamental script (VBScript) that’s executed when the goal clicks a hyperlink within the PowerPoint file.

In an alternate technique, a malware-laden Home windows batch file is began by exploiting a living-off-the-land binary (LOLBin) to retrieve a second-stage downloader that’s used to acquire and execute a distant payload.

Lazarus Group

Kaspersky additionally found a pattern .VHD that comes with a decoy job description PDF file that’s engineered to generate an intermediate downloader that masquerades as antivirus software program to get the payload for the following stage, however not earlier than disabling the real EDR options by eradicating consumer mode. fingers.

Whereas the precise implant delivered is unclear, it’s thought of just like a persistence backdoor utilized in SnatchCrypto assaults.

The usage of Japanese file names for one of many decoy paperwork, in addition to the creation of fraudulent domains disguised as reliable Japanese enterprise capital firms, means that monetary companies within the island nation are prone to be focused by BlueNoroff.

Cyber ​​warfare has been a serious focus of North Korea in response to financial sanctions imposed by a number of international locations and the United Nations over issues about its nuclear applications. It has additionally develop into a serious income for the cash-strapped nation.

The truth is, in keeping with South Korea’s Nationwide Intelligence Service (NIS), state-sponsored North Korean hackers are estimated to have stolen $1.2 billion value of cryptocurrency and different digital property from targets around the globe over the previous 5 years. .

“This group is very financially motivated and truly manages to revenue from their cyberattacks,” Park mentioned. “This additionally means that assaults by this group are unlikely to abate within the close to future.”

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BlueNoroff APT Hackers Using New Ways to Bypass Windows MotW Protection