Friday, June 14, 2024

Andariel APT Hackers Drop a New Malware On Windows Via Weaponized MS Word Doc

The latest research discovered Andariel, a part of the Lazarus group, introduced several new malware families, such as YamaBot and MagicRat, updated versions of NukeSped and DTrack. 

Andariel group executed the Maui ransomware attack using the DTrack backdoor by exploiting the Log4j vulnerability to gain access.

US Cybersecurity and Infrastructure Security Agency (CISA) reported that Maui ransomware targets mainly companies and government organizations in the US healthcare sector.  

As a result, researchers uncovered a previously undocumented malware family and an addition to Andariel’s set of TTPs. 

DTrack Backdoor

Andariel infects Windows machines by executing a Log4j exploit that downloads further malware from the C2 server

The Andariel group’s primary tool is the long-established malware DTrack. It collects information about a victim and sends it to a remote host.  

DTrack collects browser history and saves it to a separate file. The variant used in Andariel attacks sends the harvested information to the cybercriminals’ server via HTTP and stores it on a remote host in the victim’s network. 

Kaspersky found most of the commands during the attack was executed manually; it did not leave any ransom notes on victim machines. 

Also, it found a set of off-the-shelf tools, Andariel, that were installed and run during the command execution phase and then used for further exploitation of the target. Below are some examples: 

  • Supremo remote desktop 
  • 3Proxy 
  • Powerline 
  • Putty 
  • Dumpert 
  • NTDSDumpEx 
  • ForkDump 

Early RAT

Andariel also uses Early RAT to target the victim machine delivered through phishing emails. The malicious attachment delivers a warning message to the users to enable macros. 

Once the user has enabled the macros, it executes a command to ping a server associated with the HolyGhost / Maui ransomware campaign. 

EarlyRat, just like many other RATs (remote access Trojans), collects system information upon starting and sends it to the C2 using the following template: 

The request has two different parameters: “id” and “query.” Next, the “rep0” and “page” parameters are also supported. They are used in the following cases: 

  • id: unique ID of the machine used as a cryptographic key to decrypt value from “query” 
  • query: the actual content. Is Base64 encoded and rolling XORed with the key specified in the “id” field. 
  • rep0: the value of the current directory 
  • page: the value of the internal state 

There are several high-level similarities between EarlyRat and MagicRat. Both are written using a framework: QT is used for MagicRat and PureBasic, for EarlyRat. Also, the functionality of both RATs is very limited. 

Although an APT group, Lazarus is notorious for carrying out traditional cybercrime operations, such as executing ransomware, which complicates the cybercrime scene. The gang also employs various unique tools, frequent updates and creates new viruses. 

Concentrating on TTPs reduces attribution time and aids in the early detection of attacks. With the aid of this knowledge, preventive efforts can be taken to avert incidents. Andariel APT Group uses weaponized Word Documents to Drop new Malware.

Look for Best Business Email Protection? Try Trustifi, An AI-Based Email security Solution – .

Website

Latest articles

Sleepy Pickle Exploit Let Attackers Exploit ML Models And Attack End-Users

Hackers are targeting, attacking, and exploiting ML models. They want to hack into these...

SolarWinds Serv-U Vulnerability Let Attackers Access sensitive files

SolarWinds released a security advisory for addressing a Directory Traversal vulnerability which allows a...

Smishing Triad Hackers Attacking Online Banking, E-Commerce AND Payment Systems Customers

Hackers often attack online banking platforms, e-commerce portals, and payment systems for illicit purposes.Resecurity...

Threat Actor Claiming Leak Of 5 Million Ecuador’s Citizen Database

A threat actor has claimed responsibility for leaking the personal data of 5 million...

Ascension Hack Caused By an Employee Who Downloaded a Malicious File

Ascension, a leading healthcare provider, has made significant strides in its investigation and recovery...

AWS Announced Malware Detection Tool For S3 Buckets

Amazon Web Services (AWS) has announced the general availability of Amazon GuardDuty Malware Protection...

Hackers Exploiting MS Office Editor Vulnerability to Deploy Keylogger

Researchers have identified a sophisticated cyberattack orchestrated by the notorious Kimsuky threat group.The...
Balaji
Balaji
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Free Webinar

API Vulnerability Scanning

71% of the internet traffic comes from APIs so APIs have become soft targets for hackers.Securing APIs is a simple workflow provided you find API specific vulnerabilities and protect them.In the upcoming webinar, join Vivek Gopalan, VP of Products at Indusface as he takes you through the fundamentals of API vulnerability scanning..
Key takeaways include:

  • Scan API endpoints for OWASP API Top 10 vulnerabilities
  • Perform API penetration testing for business logic vulnerabilities
  • Prioritize the most critical vulnerabilities with AcuRisQ
  • Workflow automation for this entire process

Related Articles