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

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3 IOCs

China-Linked OP-512 Targets IIS Servers With Unique Web Shell Framework

Cyber Press
Cyber Press
Published June 8, 2026Original Report

Excerpt

A newly identified China-linked threat cluster, dubbed OP-512, is targeting Internet Information Services (IIS) servers using a highly evasive custom web shell framework. Discovered by ReliaQuest, this espionage operation stands out in an increasingly crowded attack surface. OP-512 marks at least the fourth China-aligned group to compromise IIS servers in the past year, but its sophisticated tooling easily bypasses standard endpoint defenses. The attackers breached a legacy…

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Diamond Model

SOCIAL AXISTECHNOLOGY AXISADVERSARYunknownINFRASTRUCTUREhcgos.comashx.lhlsjcb.comc.hcgos.comCAPABILITYunknownVICTIMunknown
Adversary
Infrastructure(3)
Capability
Victim

Indicators of Compromise

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3 indicators

TypeIndicatorConfidenceScoreFirst Seen
Domainhcgos.comHighScore 63/100First seen
Domainashx.lhlsjcb.comHighScore 68/100First seen
Domainc.hcgos.comHighScore 63/100First seen

IOC Relationship Graph

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