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ProxyLogon PoC Exploit Released; Likely to Fuel More Disruptive Cyber Attacks

ProxyLogon PoC Exploit Released; Likely to Fuel More Disruptive Cyber Attacks The U.S. Cybersecurity and Infrastructure Security Agency (CISA) and the Federal Bureau of Investigation (FBI) on Wednesday issued a joint advisory warning of active exploitation of vulnerabilities in Microsoft Exchange on-premises products by nation-state actors and cybercriminals. CISA and FBI assess that adversaries could exploit these vulnerabilities to compromise networks, steal information, encrypt data for ransom, or even execute a destructive attack, the agencies said. Adversaries may also sell access to compromised networks on the dark web. The attacks have primarily targeted local governments, academic institutions, non-governmental organizations, and business entities in various industry sectors, including agriculture, biotechnology, aerospace, defense, legal services, power utilities, and pharmaceutical, which the agencies say are in line with previous activity conducted by Chinese cyber

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Microsoft Confident Exchange Hack Is State-Sponsored Operation | Hacking

); //]]>// >By John P. Mello Jr. Mar 10, 2021 4:00 AM PT Microsoft on Monday reported that multiple malicious actors were taking advantage of vulnerabilities in the company s Exchange software last week to attack systems at organizations that have failed to patch the flaws. To help organizations that haven t deployed Microsoft s security tools, the company released the malware hashes and known malicious file paths which can be used to address the vulnerabilities manually. Microsoft revealed on March 4 that it had detected multiple zero-day exploits being used to attack on-premise versions of its Exchange Server software. It added that in the attacks observed by the company, the threat actor used the vulnerabilities to access email accounts, and allowed installation of additional malware to facilitate long-term access to victim environments.

New yorkUnited statesJohn hultquistKaren walshMatt petroskyMax malyutinPurandar dasBen smithJohnp mello jrNews networkExchange serverAllegro solutionsNew york city basedChina chopperSoft cellSenior threat researcher max malyutin

Exchange servers under siege from at least 10 APT groups

On 2021-02-28, we noticed that the vulnerabilities were used by other threat actors, starting with Tick and quickly joined by LuckyMouse, Calypso and the Winnti Group. This suggests that multiple threat actors gained access to the details of the vulnerabilities before the release of the patch, which means we can discard the possibility that they built an exploit by reverse engineering Microsoft updates. Finally, the day after the release of the patch, we started to see many more threat actors (including Tonto Team and Mikroceen) scanning and compromising Exchange servers en masse. Interestingly, all of them are APT groups interested in espionage, except for one outlier (DLTMiner), which is linked to a known cryptomining campaign. A summary of the timeline is shown in Figure 1.

United statesUnited kingdomSouth koreaRiskware lsassdumperHacktool mimikatLuckymouse sysupdatePswtool quarkspwdumpEuropean banking authorityProgram files commonResource developmentDeset researchWinnti groupServer software componentCurrentcontrolset services parametersMicrosoft exchange or sharepointWinnti group plug

Microsoft Confident Exchange Hack Is State-Sponsored Operation | Hacking

Microsoft Confident Exchange Hack Is State-Sponsored Operation | Hacking
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New yorkUnited statesJohn hultquistKaren walshMatt petroskyMax malyutinPurandar dasBen smithJohnp mello jrNews networkExchange serverAllegro solutionsNew york city basedChina chopperSoft cellSenior threat researcher max malyutin

US taking whole of government response to apparent China-backed Microsoft hack

US taking whole of government response to apparent China-backed Microsoft hack
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