Last updated: August 19, 2026 at 1:47 AM UTC
All 741 Vulnerability 286 Breach 129 Threat 319 Defense 7
Tag: ddos (5 articles)Clear

Dysphoria botnet moves command and control onto the blockchain to resist takedown

An IoT botnet tracked as Dysphoria has adopted blockchain-based name services and relays built from its own victims after a March law enforcement operation disrupted related botnet infrastructure. Rather than hardcoding servers, it resolves command-and-control details through Ethereum and Solana naming systems, with addresses hidden inside fake IPv6 strings and recovered by a custom algorithm, which makes conventional server seizure harder. A separate relay build drops the attack modules and instead shuttles traffic between outside connections and remote servers through compromised devices. It spreads mainly through weak Telnet and SSH passwords and known device flaws. Researchers put its size above 200,000 bots, though that count is not independently verified.

Check
Take IoT and networking devices off direct internet exposure, replace default and weak Telnet and SSH credentials, patch known device flaws, and disable remote management where it is not needed.
Affected
Internet-exposed IoT and networking devices with weak Telnet or SSH passwords or unpatched flaws; these get recruited for denial-of-service attacks or as relays that hide the operator's real infrastructure.
Fix
Enforce strong unique device credentials, disable Telnet and unnecessary remote services, keep firmware patched or replace unsupportable devices, and monitor outbound connections for relay and blockchain name-service activity.

148 npm packages posed as student proxies to turn browsers into a DDoS botnet

Researchers at JFrog found 148 npm packages that abused the registry not to attack developers but as free hosting for a booby-trapped web proxy aimed at students trying to bypass school filters. Anyone who opened one of the proxy sites had their browser quietly conscripted into a distributed denial-of-service botnet, flooding target servers with HTTP and WebSocket traffic, alongside injected ads and tracking. Crucially, the packages contained no install-time scripts and were never meant to be added to a project, so dependency scanners and install sandboxes, which watch what runs on install, would not catch them. The operators can re-arm the dormant attack code with a single commit.

Check
Consider that npm and similar registries can host malicious web content, not just installable code; watch for browsers reaching proxy or tutoring-themed sites backed by package registries, and block known campaign domains.
Affected
Anyone, especially students, who visits one of these registry-hosted proxy sites; their browser is silently used to launch denial-of-service attacks, while organizations may see the resulting traffic from their networks.
Fix
Block the campaign's known package and domain indicators, educate users that free web proxies can weaponize their browsers, and treat public package registries as potential malware-hosting infrastructure, not just a dependency source.

New C0XMO botnet exploits DD-WRT router flaw, wipes rival malware

Fortinet has uncovered a new botnet called C0XMO, built from the long-running Gafgyt malware family, that breaks into devices by exploiting an old flaw (CVE-2021-27137) in the UPnP service of DD-WRT router firmware. A booby-trapped network request gives the attacker code execution with no login needed. Once in, C0XMO digs in with hidden files and cron jobs that re-run it every 15 minutes, then hunts down and deletes rival botnets and even researchers' security tools to keep the device to itself. A separate scanner spreads it across many chip types (ARM, MIPS, x86, and more), and infected devices are wired up to launch 19 kinds of denial-of-service floods.

Check
Audit routers and IoT devices for DD-WRT firmware vulnerable to CVE-2021-27137, and hunt Linux hosts for hidden .sys files, 15-minute cron jobs, and modified shell profiles.
Affected
DD-WRT router firmware with the vulnerable UPnP/SSDP service (CVE-2021-27137) reachable on UDP port 1900, plus Linux and IoT devices with weak Telnet or SSH credentials.
Fix
Update DD-WRT firmware to a fixed build, disable UPnP and internet-facing Telnet/SSH, set strong unique admin credentials, and remove the malware's cron jobs and hidden payloads.

Alleged Kimwolf IoT botmaster 'Dort' arrested in Ottawa, charged in US and Canada - swatting attacks against researchers cited

Krebs on Security reports that Jacob Butler, the 18-year-old Ottawa resident allegedly known online as 'Dort,' has been arrested and charged in both the US and Canada with running the Kimwolf IoT botnet. KrebsOnSecurity unmasked Butler as the operator on February 28 by tying together his email addresses, forum registrations, and public Telegram and Discord posts. Dort later threatened and swatted researchers including Synthient's Ben Brundage. Ontario Provincial Police executed a search warrant in Ottawa on March 19 and seized devices. Kimwolf competed with Aisuru, JackSkid, and Mossad for the same vulnerable-IoT population. Butler faces up to 10 years if extradited and convicted in the US.

Check
Search EDR and netflow telemetry for outbound connections from IoT devices to known Kimwolf, Aisuru, JackSkid, and Mossad C2 sets. Inventory unpatched IoT devices on residential and SMB networks.
Affected
IoT devices - mostly routers, NVRs, and consumer IP cameras - vulnerable to the unpatched flaws Kimwolf was using to spread. Synthient helped patch the underlying weakness earlier this year.
Fix
Update firmware on all IoT and network-edge devices and disable WAN-side admin interfaces. Block known Kimwolf C2 ranges. Monitor for the lateral spread patterns documented by Synthient.

Leaked Shai-Hulud worm source code reused in four malicious npm packages, one adds Phantom Bot DDoS

After TeamPCP dumped the Shai-Hulud worm's source code on GitHub last week with the note 'Here We Go Again - Let the Carnage Continue,' a new actor under the npm name deadcode09284814 has published four malicious packages typosquatting Axios and friends. One package, chalk-tempalte, contains an almost-unmodified copy of the leaked worm, exfiltrating GitHub tokens, cloud configs, and crypto wallet data to a remote C2 and creating a public GitHub repo titled 'A Mini Sha1-Hulud has Appeared.' Another package, axois-utils, adds a Go-based DDoS bot called Phantom Bot that floods HTTP, TCP, and UDP. OXsecurity, which discovered the campaign, counted about 2,678 combined downloads.

Check
Search package lock files and CI/CD logs for installs of chalk-tempalte, @deadcode09284814/axios-util, axois-utils, or color-style-utils. Check your GitHub accounts for any repo named 'A Mini Sha1-Hulud has Appeared.'
Affected
Any organization whose developers install Node.js packages by name from npm without lockfile pinning or pre-publish vetting, especially those typosquatting the popular axios library.
Fix
Uninstall the four packages and rotate all developer GitHub tokens, npm tokens, and cloud credentials on affected machines. Block the C2 hosts 87e0bbc636999b.lhr.life and 80.200.28.28:2222 at egress.