14, the software giant took control over a key domain name - avsvmcloudcom - that was used by the SolarWinds hackers to communicate with systems compromised by the backdoored Orion product updates.Ī WHOIS lookup on the malware control domain. Security experts have been speculating as to the extent of the damage from the SolarWinds hack, combing through details in the FireEye analysis and elsewhere for clues about how many other organizations may have been hit.Īnd it seems that Microsoft may now be in perhaps the best position to take stock of the carnage. That disclosure came less than 24 hours after DHS’s Cybersecurity and Infrastructure Security Agency (CISA) took the unusual step of issuing an emergency directive ordering all federal agencies to immediately disconnect the affected Orion products from their networks. 14, Reuters reported the SolarWinds intrusion also had been used to infiltrate computer networks at the U.S. 13, news broke that the SolarWinds hack resulted in attackers reading the email communications at the U.S.

FireEye didn’t explicitly say its own intrusion was the result of the SolarWinds hack, but the company confirmed as much to KrebsOnSecurity earlier today.Īlso on Dec. 13, FireEye published a detailed writeup on the malware infrastructure used in the SolarWinds compromise, presenting evidence that the Orion software was first compromised back in March 2020. The initial breach disclosure from SolarWinds came five days after cybersecurity incident response firm FireEye announced it had suffered an intrusion that resulted in the theft of some 300 proprietary software tools the company provides to clients to help secure their IT operations. SolarWinds said the intrusion also compromised its Microsoft Office 365 accounts. Securities and Exchange Commission (SEC), SolarWinds said roughly 33,000 of its more than 300,000 customers were Orion customers, and that fewer than 18,000 customers may have had an installation of the Orion product that contained the malicious code. federal government and Fortune 500 firms to monitor the health of their IT networks.

13, SolarWinds acknowledged that hackers had inserted malware into a service that provided software updates for its Orion platform, a suite of products broadly used across the U.S. Meanwhile, Microsoft should soon have some idea which and how many SolarWinds customers were affected, as it recently took possession of a key domain name used by the intruders to control infected systems. The still-unfolding breach at network management software firm SolarWinds may have resulted in malicious code being pushed to nearly 18,000 customers, the company said in a legal filing on Monday.

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