Pierluigi Paganini
November 21, 2021
A malware campaign aimed at Microsoft Exchange servers exploits ProxyShell and ProxyLogon issues and uses stolen internal reply-chain emails. A malware campaign aimed at Microsoft Exchange servers exploits ProxyShell and ProxyLogon issues and uses stolen internal reply-chain emails to avoid detection. The campaign was uncovered by TrendMicro researchers that detailed the technique used to trick […]
Pierluigi Paganini
October 04, 2021
ChamelGang APT is a new cyberespionage group that focuses on fuel and energy organizations and aviation industry in Russia ChamelGang is a new APT group that was first spotted in March by researchers at security firm Positive Technologies, it targets Russian companies in the energy and aviation industry. In March, the cyberespionage group was observed leveraging […]
Pierluigi Paganini
April 26, 2021
Attackers are exploiting the ProxyLogon flaws in Microsoft Exchange to recruit machines in a cryptocurrency botnet tracked as Prometei. Experts from the Cybereason Nocturnus Team have investigated multiple incidents involving the Prometei Botnet. The attackers hit companies in North America and threat actors exploited the ProxyLogon Microsoft Exchange flaws (CVE-2021-27065 and CVE-2021-26858) to deliver malware in their networks. Attackers […]
Pierluigi Paganini
April 18, 2021
Threat actors targeted are exploiting the ProxyLogon vulnerabilities in Microsoft Exchange servers to deploy Monero cryptocurrency miners. Sophos researchers reported that threat actors targeted Microsoft Exchange by exploiting ProxyLogon vulnerabilities to deploy malicious Monero cryptominer in an unusual attack. The unknown attacker is attempting to deliver a payload which is being hosted on a compromised […]
Pierluigi Paganini
March 24, 2021
Security experts reported that a second ransomware gang, named Black Kingdom, is targeting Microsoft Exchange servers. After the public disclosure of ProxyLogon vulnerabilities, multiple threat actors started targeting vulnerable Microsoft Exchange servers exposed online. The first ransomware gang exploiting the above issues in attacks in the wild was a group tracked as DearCry. Last crew […]
Pierluigi Paganini
March 24, 2021
Microsoft revealed that 92% of all on-premises Microsoft Exchange servers exposed online affected by the ProxyLogon vulnerabilities are now patched. On March 2nd, Microsoft released emergency out-of-band security updates that address four zero-day issues collectively tracked as ProxyLogon (CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-27065) in all supported Microsoft Exchange versions that are actively exploited in the wild. At […]
Pierluigi Paganini
March 21, 2021
Microsoft announced that its Defender Antivirus and System Center Endpoint Protection now protects users against attacks exploiting Exchange Server vulnerabilities. Microsoft announced this week that Defender Antivirus and System Center Endpoint Protection now provide automatic protection against attacks exploiting the recently disclosed ProxyLogon vulnerabilities in Microsoft Exchange. “Today, we have taken an additional step to […]
Pierluigi Paganini
March 16, 2021
Microsoft released an Exchange On-premises Mitigation Tool (EOMT) tool to small businesses for the fix of ProxyLogon vulnerabilities. On March 2nd, Microsoft released emergency out-of-band security updates that address four zero-day issues (CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-27065) in all supported MS Exchange versions that are actively exploited in the wild. The IT giant reported that at least one […]
Pierluigi Paganini
March 16, 2021
Microsoft is reportedly investigating whether the recent attacks against Microsoft Exchange servers could be linked to information leaked by a partner security firm. According to a report published by The Wall Street Journal, Microsoft is investigating whether the threat actors behind the recent wave of attacks on Microsoft Exchange servers worldwide may have obtained sensitive […]
Pierluigi Paganini
March 15, 2021
A security researcher released a new PoC exploit for ProxyLogon issues that could be adapted to install web shells on vulnerable Microsoft Exchange servers. A security researcher has released a new proof-of-concept exploit that could be adapted to install web shells on Microsoft Exchange servers vulnerable ProxyLogon issues. Since the disclosure of the flaw, security […]
