Threat report

www.microsoft.com/security/blog/2021/05/27/new-sophisticated-email-based-attack-from-nobelium

https://www.microsoft.com/security/blog/2021/05/27/new-sophisticated-email-based-attack-from-nobelium/

Published on: www.microsoft.com
Sources in this catalogue: 3

ATT&CK techniques those detections carry

T1566.001Spearphishing Attachment
T1218System Binary Proxy Execution
T1047Windows Management Instrumentation
T1059Command and Scripting Interpreter
T1059.001PowerShell
T1059.003Windows Command Shell
T1071Application Layer Protocol
T1127Trusted Developer Utilities Proxy Execution
+8 more

5 published detections cite this

Citing it, not covering it: each of these was written with this as evidence, and carries the source it came from and the licence it was published under.

Detections citing this reference
Detection	Severity	Source	Published	Licence
Unusual Network Connection via DllHost	Medium	Elastic detection rules	Sep 20, 2026	Elastic License 2.0
Suspicious Execution from a Mounted Device	Medium	Elastic detection rules	Sep 20, 2026	Elastic License 2.0
Windows Phishing Recent ISO Exec Registry	Medium	Splunk security content	Aug 26, 2026	Apache License 2.0
Windows ISO LNK File Creation	Medium	Splunk security content	Aug 26, 2026	Apache License 2.0
ISO or Image Mount Indicator in Recent Files	Medium	SigmaHQ	Aug 26, 2026	Detection Rule License 1.1

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