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IOC Radar

Indicators are what attackers leave behind. Stolen credentials are what they arrive with.

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19 IOCs

Passkey-themed social engineering leads to identity and cloud compromise

Microsoft Threat Intelligence
Microsoft Threat Intelligence
Published September 9, 2026Original Report

Excerpt

In this article Attack chain overview Attribution Mitigation and protection guidance Learn more Microsoft Security Research is tracking active cloud-based intrusions spanning multiple accounts in which unusual sign-ins were followed by threat actor-added authentication methods, high-volume Microsoft Graph activity, SharePoint and OneDrive downloads, and email collection through REST APIs. Microsoft Security Research assesses that this sequence is consistent with automated…

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Diamond Model

SOCIAL AXISTECHNOLOGY AXISADVERSARYunknownINFRASTRUCTUREvalidationsetupac.comoskeysync.comcompanyname.malicious…CAPABILITYunknownVICTIMunknown
Adversary
Infrastructure(6)
Capability
Victim

Indicators of Compromise

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19 indicators

TypeIndicatorConfidenceScoreFirst Seen
Domainvalidationsetupac.comHighScore 58/100First seen
Domainoskeysync.comHighScore 65/100First seen
Domaincompanyname.maliciousdomain.comHighScore 58/100First seen
Domainsecure-passkey.comHighScore 62/100First seen
Domainintegratedsso.comHighScore 58/100First seen
Domainsyncmykey.comHighScore 58/100First seen
Domaincompany-name.secure-passkey.comHighScore 58/100First seen
Domainadd-passkey.comHighScore 62/100First seen
Domainoskeyconnect.comHighScore 70/100First seen
Domaincontoso.add-passkey.comHighScore 58/100First seen
Domainoktasession.comHighScore 58/100First seen
Domainportalsetuphub.comHighScore 70/100First seen
Domainmyconnectkey.comHighScore 70/100First seen
Domainsetupmypasskey.comHighScore 58/100First seen
Domainpasskeyhelpdesk.comHighScore 72/100First seen
Domainoskeysetup.comHighScore 58/100First seen
Domaincompany-name.integratedsso.comHighScore 58/100First seen
Domainoskeyregister.comHighScore 58/100First seen
Domainkeysyncos.comHighScore 70/100First seen

IOC Relationship Graph

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