Saturday, December 2, 2023

Newly Discovered Hacking Tools Remotely control the Hacked Computers via a GUI & Command-Line Interface

Researchers discovered two new malicious hacking tools (BalkanRAT, BalkanDoor) from the ongoing campaign Balkans that act as a remote access trojan and backdoor.

Malware authors developed these Tools with two different features. BalkanRAT, a remote access trojan that controls the compromised computer remotely via a graphical interface and the BalkanDoor performing the same operation using the command-line interface.

Based on the telemetry data that learned by ESET researchers, Balkans campaign spreading these tools since 2016 to various countries Croatia, Serbia, Montenegro, and Bosnia and Herzegovina and very recently the campaign detection on July 2019.

Threat actors using malicious with a weaponized file attachment, links, decoy PDFs as a spreading mechanism and plant both tools in targeted victims computer to gain the complete control of it.

Both tools are digitally signed with various certificates, and it runs as a Windows service that helps to unlock the Windows logon screen remotely and take over of the highest privilege of the infected system.

Infection Process Balkans Campaign

A malspam emails distributed with a link that posed a legitimate website of official institutions and Prompt to drop a malicious file.

A dropped malicious file that linked to PDF executable which is a WinRAR self-extractor and it acts as a legitimate PDF to fool the victims.

Once it executed, the malicious PDF unpack its content and silently execute either BalkanRAT or BalkanDoor.

A very recent BalkanDoor that detected in this year distributed as an ACE archive that specially crafted to exploit the WinRAR ACE vulnerability CVE-2018-20250.

Attacker mostly deploys both tools in the same target system, through which, an attack control the system via both graphical interface and command-line.

According to ESET research, The attacker detects that the victim has their screen locked and thus, most probably, is not using the computer (either via BalkanDoor sending screenshot showing that computer is locked, or via the View Only mode of BalkanRAT). Via the BalkanDoor backdoor, the attacker sends a backdoor command to unlock the screen… and using BalkanRAT, they can do whatever they want on the computer.

There is no exfiltration channel found in BalkanDoor backdoor tool, attackers would need an exfiltration channel for uploading the collected data or they would manually backup the to send it to the attacker.

BalkanDoor Backdoor

  1. Simple backdoor with a small number of commands to the remote shell, take a screenshot
  2. Perform automatic tasks on victims computer and control several computers at once.
  3. BalkanDoor let the computer connects to a C&C server, identifying itself by the computer name and requesting the commands
  4. Connects via both HTTP or HTTPS protocol
  5. Performing repeated connecting attempt via proxy If the connection is not successful.
  6. it capable of Unlocks the screen, Creates a remote shell and redirects its input/output to the specified IP address and passwordless screen-unlocking.

BalkanRAT – Remote Access Trojan

  1. Most powerful and complex compared than BalkanDoor.
  2. Deploy a copy of the Remote Utility software is an ultimate goal.
  3. IT used for remote access to a computer or for remote administration
  4. The dropper opens the PDF file so as not to arouse suspicion of the user.
  5. The core component acts as a keylogger.
  6. Since BalkanRAT misuses genuine Remote Utilities, communication seems to be legitimate.

“Both BalkanRAT and BalkanDoor have some interesting tricks up their sleeves and each of them separately pose a significant risk to the victims. If used together as a toolset, they make an even more powerful weapon – the more the campaign we have discovered targets accounting, a function that is critical for organizations.” ESET said.

Sponsored: Best Practices to Strengthen Cyber Security – Manage all the Endpoint networks from a single Console.

You can follow us on LinkedinTwitterFacebook for daily Cybersecurity updates also you can take the Best Cybersecurity course online to keep yourself updated.


Latest articles

Active Attacks Targeting Google Chrome & ownCloud Flaws: CISA Warns

The CISA announced two known exploited vulnerabilities active attacks targeting Google Chrome & own...

Cactus Ransomware Exploiting Qlik Sense code execution Vulnerability

A new Cactus Ransomware was exploited in the code execution vulnerability to Qlik Sense...

Hackers Bypass Antivirus with ScrubCrypt Tool to Install RedLine Malware

The ScrubCrypt obfuscation tool has been discovered to be utilized in attacks to disseminate the RedLine Stealer...

Hotel’s Hacked Logins Let Attacker Steal Guest Credit Cards

According to a recent report by Secureworks, a well-planned and advanced phishing attack was...

Critical Zoom Vulnerability Let Attackers Take Over Meetings

Zoom, the most widely used video conferencing platform has been discovered with a critical...

Hackers Using Weaponized Invoice to Deliver LUMMA Malware

Hackers use weaponized invoices to exploit trust in financial transactions, embedding malware or malicious...

US-Seized Crypto Currency Mixer Used by North Korean Lazarus Hackers

The U.S. Treasury Department sanctioned the famous cryptocurrency mixer Sinbad after it was claimed...
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

API Attack Simulation Webinar

Live API Attack Simulation

In the upcoming webinar, Karthik Krishnamoorthy, CTO and Vivek Gopalan, VP of Products at Indusface demonstrate how APIs could be hacked.The session will cover:an exploit of OWASP API Top 10 vulnerability, a brute force account take-over (ATO) attack on API, a DDoS attack on an API, how a WAAP could bolster security over an API gateway

Related Articles