ISC StormCast for Friday, September 30th, 2022

PNG Analysis with pngdump.py
https://isc.sans.edu/forums/diary/PNG%20Analysis/29100/
Possible Exchange Server 0-Day Vulnerability
https://www.gteltsc.vn/blog/warning-new-attack-campaign-utilized-a-new-0day-rce-vulnerability-on-microsoft-exchange-server-12715.html
https://success.trendmicro.com/dcx/s/solution/000291651?language=en_US
Bad VIB(E)s Part One: Investigating Novel Malware Persistence Within ESXi Hypervisors
https://www.mandiant.com/resources/blog/esxi-hypervisors-malware-persistence