Hackers Using InfoStealer Malware that Attacks Windows Servers To Steal Sensitive Data

A new InfoStealer malware has been identified which targets the windows servers, stealing its sensitive data that includes the login credentials, OS version, IP addresses and also uploads the victim’s data to the FTP attacker’s server.

Security researchers from Checkpoint observed a huge malware campaign that runs malicious contents specifically to steal sensitive data from windows server using Mimikatz tool and the campaign specifically targets countries in Asia.

The infection starts with the executable file, downloaded from 66[.]117.6.174/ups.rar and then it gets executed on the victim’s machine, and continues to check if the compromised machine is a windows server or not.

If the infected machine is a windows server then it executes the malware. whereas, when a different Operating System is identified, the malware will not run.

Upon finding the target as a “Windows Server”, the server sends two requests, one is to drop the batch files and to trigger the file-less attack, and the next is to send a request to sync with C2 server.

The Patch file contains the components of the infamous Mirai botnet and the attackers enhanced this module with new malicious behaviors. The new module is capable of creating a WMI Event customer object that runs the PowerShell and escalates it to admin permission.

Then it tries downloading the following malwares such as Mirai, Dark cloud and XMRig miner. To download the malware it uses cradle obfuscator method and invokes the content from the following IP http://173[.]208.139.170/s.txt.

In order to avoid the detection, it invokes another command which downloads the ps1 file that runs various commands. Then malware calls GetVersionExA which extracts the OS version.

It extracts the details of the processor and invokes Mimikatz from an external URL and dumps all the passwords. Once the password is exfiltrated, it is saved in a file and then the file is uploaded to an FTP server managed by attackers.

Based on Checkpoint analysis, the FTP server is still open and the uploads are continuously stored in the server every second.

Related Read:

Beware!! Hackers Now Spreading Dangerous FlawedAmmyy Malware Through PDF & IQY File

Hackers Using Microsoft Publisher File To Deliver Dangerous FlawedAmmyy RAT Targeting Banks

Gurubaran

Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Recent Posts

Threat Actors Manipulate Search Results to Lure Users to Malicious Websites

Cybercriminals are increasingly exploiting search engine optimization (SEO) techniques and paid advertisements to manipulate search…

24 hours ago

Hackers Imitate Google Chrome Install Page on Google Play to Distribute Android Malware

Cybersecurity experts have unearthed an intricate cyber campaign that leverages deceptive websites posing as the…

1 day ago

Dangling DNS Attack Allows Hackers to Take Over Organization’s Subdomain

Hackers are exploiting what's known as "Dangling DNS" records to take over corporate subdomains, posing…

1 day ago

HelloKitty Ransomware Returns, Launching Attacks on Windows, Linux, and ESXi Environments

Security researchers and cybersecurity experts have recently uncovered new variants of the notorious HelloKitty ransomware,…

1 day ago

RansomHub Ransomware Group Hits 84 Organizations as New Threat Actors Emerge

The RansomHub ransomware group has emerged as a significant danger, targeting a wide array of…

1 day ago

Threat Actors Leverage Email Bombing to Evade Security Tools and Conceal Malicious Activity

Threat actors are increasingly using email bombing to bypass security protocols and facilitate further malicious…

2 days ago