InfoSecBulletin Cybersecurity for mankind
AhnLab’s Security Emergency Response Center (ASEC) studies attacks on poorly secured Linux SSH servers and shares the findings on the ASEC Blog.
Attackers need to find out the IP address and SSH account details before installing malware like DDoS bot and CoinMiner. They scan for servers with the SSH service (port 22) activated to carry out brute force or dictionary attacks to get the login information.
Bangladesh Revenue Market For Data Center Is Projected US$615.59m in 2025
Hackers breach US bank regulator’s email system for year
Fortinet Addresses Multiple Vulnerabilities In Its Various Products
Microsoft patched 134 Windows security flaws including a zero-day
CVE-2025-30401
Alert! WhatsApp Vuls Let Attackers Execute Malicious Code
Google patched 2 Android zero-days and 60 other flaws
Check Point said BreachForum post old data
Apple Warns of 3 Zero Day Vulns Actively Exploited
24,000 unique IP attempted to access Palo Alto GlobalProtect portals
CVE-2025-1268
Patch urgently! Canon Fixes Critical Printer Driver Flaw
ALSO READ:
Threat actors gain more cryptocurrency by controlling more CoinMiners. They also have the ability to launch stronger DDoS attacks by controlling more DDoS bots. However, in order to increase the number of CoinMiners and DDoS bots, they need to gather more information or account credentials from their targets.
In addition to DDoS bots and CoinMiners, attackers can also install malware to perform scanning and brute force or dictionary attacks on infected systems, allowing them to take advantage of more vulnerable systems. Attackers can also just install scanners and sell the breached IP and account credentials on the dark web.
Poorly managed SSH servers can become targets for various types of malware, including SSH scanner, DDoS bots, and CoinMiners. This post analyzes cases of attacks involving these malware.
