CISA publishes reports on DearCry ransomware and China Chopper Web Shell malware linked to Exchange Server exploits (update-2)

The Cybersecurity and Infrastructure Security Agency (CISA) has published reports on DearCry ransomware and China Chopper Web Shell malware linked to recent Exchange Server exploits. Attackers can use this malware to further compromise on-premise Microsoft Exchange servers and launch other attacks.

Continue Reading CISA publishes reports on DearCry ransomware and China Chopper Web Shell malware linked to Exchange Server exploits (update-2)

Microsoft: New analysis of Exchange Server vulnerabilities and cyberattacks

Microsoft has published new detailed analysis of Exchange Server vulnerabilities, cybercriminal groups and post-compromise second stage attack malware. In addition, the tech giant offered sound mitigation guidance.

Continue Reading Microsoft: New analysis of Exchange Server vulnerabilities and cyberattacks

Critical F5 BIG-IP vulnerability under active attack

Security researchers are warning of mass scans and active exploits of a Critical vulnerability on F5 BIG-IP and BIG-IQ infrastructure. F5 patched the Critical remote code execution vulnerability CVE-2021-22986 nearly two weeks ago when the networking company confirmed an unauthenticated attacker could exploit the vulnerability.

Continue Reading Critical F5 BIG-IP vulnerability under active attack

CHIRP tool scans for signs of APT compromise associated with SolarWinds and Azure/M365 cyberattacks

The DHS CISA cybersecurity team just released a new tool dubbed CHIRP, a forensics collection tool designed to help network defenders scan for indicators of compromise (IOCs) associated with the SolarWinds Orion and Active Directory/M365 compromise and cyberattacks.

Continue Reading CHIRP tool scans for signs of APT compromise associated with SolarWinds and Azure/M365 cyberattacks

Microsoft releases emergency patches for Exchange Server RCE vulnerabilities exploited in the wild (Updated)

Microsoft has released emergency out-of-band security updates to fix multiple Critical vulnerabilities impacting Microsoft Exchange Server 2013, 2016 and 2019. The tech giant also published interim mitigations if organizations can not patch immediately, as well as an IOC detection tool.

Continue Reading Microsoft releases emergency patches for Exchange Server RCE vulnerabilities exploited in the wild (Updated)