Ten agencies from seven countries published joint advisory AA26-281A on 8 October, naming Integrity Technology Group, a for-profit Beijing company, as an enabler of Chinese government-linked intrusions1. The US signed through the Federal Bureau of Investigation (FBI), the National Security Agency (NSA) and the Cybersecurity and Infrastructure Security Agency (CISA). Britain's National Cyber Security Centre (NCSC) published the UK side the same day2, and agencies from Australia, Canada, Japan, New Zealand and Spain, through its National Intelligence Centre, completed the list. The advisory says the actors' methods match Flax Typhoon, also tracked as ETHEREAL PANDA and Red Juliett, and draws on several FBI investigations.
CISA added five flaws dated 2015 to 2023 to its Known Exploited Vulnerabilities (KEV) catalogue the same day, the list of bugs it has confirmed attackers are using, each with a federal deadline of 11 October3. Each flaw carries a CVE (Common Vulnerabilities and Exposures) identifier: BIND name-server CVE-2015-5477, ProFTPD CVE-2015-3306, Apache Struts CVE-2016-3081, ONLYOFFICE Docs CVE-2021-3199 and Strapi CVE-2023-22894. Those five are exactly the advisory CVEs the catalogue did not already hold; Shellshock, Pulse Secure and GitLab were listed before.
Sixteen agencies had named the same company, with Flax Typhoon, over a router botnet in April. This time the attribution and the patch deadlines arrived together, so a federal agency running any of the five components took its deadline from an intelligence finding rather than a vendor bulletin.
Japan's National Police Agency (NPA) and National Cybersecurity Office published the Japanese release on 9 October4. It names the SoftEther virtual private network (VPN) client, a scanner called "MicroScan" and a Linux binary called "office-cli", with indicators of compromise going back to January 2016. According to the release, the actors relied on open-source scanners, password spraying against Microsoft Exchange Server, and a commercial VPN installed with PowerShell so access survived a reboot.
