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NightSky

Night Sky is a China-nexus ransomware group (attributed to the "Emperor Dragonfly" cluster) that emerged in late 2021, gaining notoriety in early 2022 by exploiting the Log4Shell vulnerability (CVE-2021-44228) to target corporate networks across healthcare, finance, government, and manufacturing using multi-extortion tactics.

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NightSky

Family profile

Night Sky is a China-nexus ransomware group (attributed to the "Emperor Dragonfly" cluster) that emerged in late 2021, gaining notoriety in early 2022 by exploiting the Log4Shell vulnerability (CVE-2021-44228) to target corporate networks across healthcare, finance, government, and manufacturing using multi-extortion tactics.

Operational record

1
YARA rules
1
Leak sites
0 available

Reported operators

Threat actors

1 named in public reporting
Cinnamon Tempest

Since around 2021, HUI Loader variants have been deployed in operations involving the ransomware families LockFile, AtomSilo, NightSky, LockBit 2.0, and Pandora.

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