Tuesday, December 5, 2023

Hackers Behind DNSpionage Created a New Remote Admin Tool for C2 Server Communication Over HTTP and DNS

Threat actors behind the new malware campaign DNSpionage created a new remote administrative tool that supports HTTP and DNS communication with C&C Server that operates by attackers.

Based on a recent incident, the DNSpionage campaign which is developed and operates by APT 34 hacking group to perform MITM Attack to steal the authentication details through Hijacking the DNS.

Malware authors behind this campaign continuously employed new tactics to evade the detection and increase the success ratio of the infection and compromise the targets.

At this new DNSpionage campaign, Threat actors developed a new malware called “Karkoff.

Infection Process and Communication

The initial stage of this new wave, attackers used an Excel document with a macro and they deploy newly developed remote Admin Tool that supports HTTP and DNS communication to the C2 server.

Threat actor added a reconnaissance phase to ensure that the payload is being dropped on specific targets.

A future that added within this malware search for two Anti-Virus software
Avira and Avast and check whether any of these security products are installed on the system and terminate its process if the result will be positive.

According to Talos Report, Te malware author left two different internal names in plain text: “DropperBackdoor” and “Karkoff”, the malware is lightweight compared to other malware due to its small size and allows remote code execution from the C2 server. 

During the C2 server communication phase, the malware uses either domain or IP address and also it supports both HTTP and HTTPS communications.

In order to obfuscate the C2 server communication, malware using base64 encoding, and also using XOR function for other obfuscation processes.

Based on the timeline of observed attacks and overlaps in IP usage during the DNSpionage campaign, Researchers believe that the same actor uses the Karkoff and DNSpionage samples.

“Also there is similar evidence indicates that DNSpionage may be a part of OilRig and we identified the C2 panel as “Scarecrow,” but we did not identify references to this panel in the leak. The victims in this screenshot are mainly from Lebanon, which is one of the areas targeted by DNSpionage and Karkoff” Talos Said.”

“The discovery of Karkoff also shows the actor is pivoting and is increasingly attempting to avoid detection while remaining very focused on the Middle Eastern region.”

Also, the Department of Homeland Security (DHS) issued a DNS hijacking campaign alert requiring all U.S. agencies to check if their .gov or agency-managed domains are resolving to the right IP addresses.

You can follow us on LinkedinTwitterFacebook for daily Cybersecurity updates also you can take the Best Cybersecurity courses online to keep your self-updated.

Indicator of Compromise

DNSpionage XLS document

2fa19292f353b4078a9bf398f8837d991e383c99e147727eaa6a03ce0259b3c5 (SHA256)

DNSpionage sample

e398dac59f604d42362ffe8a2947d4351a652516ebfb25ddf0838dd2c8523be8 (SHA256)

Karkoff samples



Latest articles

Hackers Use Weaponized Documents to Attack U.S. Aerospace Industry

An American aerospace company has been the target of a commercial cyberespionage campaign dubbed...

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 Booking.com 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...
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