Method of infection: Water-holing
OSIRIS used a Social Engineering method called “water holing” to attack German IP addresses.Β
How does water holing attack work?
- Β The victim enters the infected website.
- The website checks if the target IP is German.
- If it’s a German IP – few evasion techniques are used to bypass EDR
- And then the virus connects to its command server through the Darknet
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π Free DNS Monitoring Tools Revealing Stealthy Attacks π
DNS is the backbone of your network β and attackers increasingly exploit it for data exfiltration, command-and-control, and malware communication. The good news? There are free tools CISOs can use to monitor and detect stealthy DNS attacks.
Here are the top free DNS monitoring tools:
1οΈβ£ SecurityTrails Free Tier β Track domain changes, DNS records, and suspicious activity.
π https://securitytrails.com/
2οΈβ£ Farsight DNSDB (Community Access) β Historical DNS data to detect anomalies.
π https://www.farsightsecurity.com/solutions/dnsdb/
3οΈβ£ PassiveTotal (Free Plan) β Aggregates DNS and threat intelligence for early detection.
π https://www.riskiq.com/solutions/passivetotal/
4οΈβ£ OpenDNS Investigate (Free Tier) β Domain reputation and threat visibility from Cisco.
π https://umbrella.cisco.com/products/investigate
5οΈβ£ Quad9 DNS Monitoring β Free recursive DNS service with threat blocking and logging.
π https://www.quad9.net/
6οΈβ£ Pi-hole β Network-level DNS sinkhole that can monitor and block suspicious domains.
π https://pi-hole.net/
7οΈβ£ Dnstrails Community Edition β DNS intelligence and threat mapping.
π https://dnstrails.com/
β‘ These tools provide early indicators of compromise, helping CISOs spot threats before they escalate. DNS monitoring is often overlooked, but itβs a powerful layer of defense.
At AUMINT.io, we combine technical monitoring with human attack simulations, showing how attackers leverage phishing, vishing, and social engineering to exploit DNS and user behavior simultaneously.
π Want to see how your team would react to DNS-targeted attacks? Book a free demo
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