Discover and read the best of Twitter Threads about #amsi
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Windows Defender ATP showed exceptional capabilities for detecting attacker techniques throughout APT3’s attack stages, registering the lowest number of misses among evaluated products. More insights from the MITRE evaluation here: msft.social/YKm7Yo
Signals from Azure ATP helped expose & enrich the detection of account discovery. This validates the strategic approach behind Microsoft Threat Protection: the most comprehensive protection comes from shared rich telemetry collected across the attack chain msft.social/YKm7Yo
The MITRE test highlighted the value of transparency: #AMSI enabled deep visibility into PowerShell scripts used in attacker techniques. Advanced ML-based detection capabilities in Windows Defender ATP used this visibility to expose the malicious scripts. msft.social/YKm7Yo
Malicious HTML applications (.hta) hosted on compromised websites continue to plague the Internet, delivering malware payloads like #Kovter, which is known for its #fileless persistence techniques. Just this year, we’ve blocked these threats on almost 1M machines.
These malicious HTML applications typically use the file name FlashPlayer.hta. Newer versions use microsoft-patch.hta as a social engineering tactic and an attempt to avoid detection. Apart from file name, though, no other apparent update in the code.
#WindowsDefenderAV stops the attack kill chain using generic, behavioral, and contextual detections. It also leverages #AMSI to inspect PowerShell and other script types, even with multiple layers of obfuscation.
