Iranian hackers target energy sector with new DNS backdoor
The Iranian Lycaeum APT hacking group uses a new .NET-based DNS backdoor to conduct attacks on companies in the energy and telecommunication sectors. [...]
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Background for this topic.
A backdoor is a hidden method within software or hardware that allows bypassing normal authentication to access a system or network. These can be intentionally created by developers for maintenance or debugging but are frequently exploited or implanted by attackers to maintain unauthorized, persistent access. Backdoors often appear as undocumented commands, hidden user accounts, or covert network services designed to evade detection.
In cybersecurity, backdoors enable attackers to circumvent security controls, increasing the risk of prolonged system compromise and data exposure. Detecting backdoors requires careful code review, monitoring for unusual system behavior, and verifying integrity through trusted baselines. Identifying backdoor indicators in malware or attacker infrastructure is critical for limiting unauthorized access and reducing attacker dwell time within networks. Defensive measures focus on eliminating hidden access points and strengthening authentication mechanisms.
The Iranian Lycaeum APT hacking group uses a new .NET-based DNS backdoor to conduct attacks on companies in the energy and telecommunication sectors. [...]
Cybersecurity researchers have taken the wraps off what they call a "nearly-impossible-to-detect" Linux malware that could be weaponized to backdoor infected systems
Threat analysts have discovered a new malware targeting Linux systems that operates as a symbiote in the host, blending perfectly with running processes and network traffic to steal account credentials and give its operators backdoor access. [...]