LLM Honeypots Trick Threat Actors into Revealing Binaries and Known Exploits

A recent deployment of Beelzebub, a low-code honeypot framework employing large language models (LLMs) as interactive baits, has successfully lured cyber threat actors into revealing their tools, techniques, and malicious binaries.

Operating as an SSH honeypot disguised as a typical OpenSSH Ubuntu server and enhanced with an LLM response engine this setup showcased how AI-powered deception can expose the latest in cybercriminal toolkits.

Compromise Exploits Weak SSH Credentials

The incident began when the honeypot, configured to monitor SSH connections on port 2222, logged a connection from IP address 45.175.100.69.

The attacker gained initial access with a routine brute-force attempt using the credentials ‘admin’ and a weak password ‘123456,’ both of which matched the honeypot’s pre-approved authentication patterns.

Upon gaining entry, the threat actor displayed familiar post-exploitation behavior probing the environment with system commands, navigating to writable directories such as /tmp, and downloading suspicious binaries.

Among the first payloads was a file misleadingly named ‘sshd’, retrieved from the compromised Joomla-based site deep-fm.de.

The site, running dated software versions, hosted a repository of exploits and botnet-related files, serving as a distribution point for various malicious components.

LLM Honeypots
botnet configuration scripts

Malware Dissection

Attempts to execute the ‘sshd’ binary were initially thwarted by permission restrictions. Unperturbed, the attacker fetched a secondary payload, ’emech.tar.gz’, and unpacked its contents, which included binaries, libraries, and installation scripts that likely comprised a modular malware package.

After cleaning traces of these files, the attacker made repeated attempts to execute the ‘sshd’ script from different locations and with varied permissions, consistent with typical attacker persistence.

A deeper analysis of the ‘sshd’ file revealed it was a Perl-based backdoor known as ‘rootbox PerlBot v2.0’ designed for remote access and command execution via IRC channels.

According to researchers, the configuration parameter section within lines 78 to 89 of the script highlighted connections to an IRC server on Undernet (ix1.undernet.org:6667), and the use of channels such as #rootbox and #c0d3rs-TeaM, with designated administrative users.

These channels acted as the command and control (C2) infrastructure, enabling operators to coordinate distributed denial-of-service (DDoS) attacks or execute arbitrary commands on compromised machines.

Validation via direct observation confirmed both the attacker’s online presence and bot communication within these IRC channels.

Standard response involved promptly reporting these channels to the Undernet administrators, highlighting the efficacy of proactive disruption at the C2 layer to neutralize botnets. This incident underscores the evolving sophistication and value of LLM-driven honeypots.

By leveraging AI to convincingly emulate system behavior and responses while capturing the full tactic spectrum credentials, payloads, command sequences, and even live C2 infrastructure defenders can collect actionable intelligence with minimal manual oversight.

Such deceptive systems don’t just delay adversaries, but now serve as rich reconnaissance outposts, providing defenders and threat researchers an inside view of attacker methodologies and newly circulating exploits.

As attackers automate and diversify their arsenals, the deployment of intelligent and adaptive honeypot environments will be essential in proactively uncovering threats and shaping future incident response strategies.

Mandvi
Mandvi
Mandvi is a Security Reporter covering data breaches, malware, cyberattacks, data leaks, and more at Cyber Press.

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