File · UTA0178 · Unknown · assessed origin China · misp-galaxy · refreshed 2026-10-06

UTA0178

UNC5221
Red Dev 61

sigil · no ATT&CK coverage stated

Last 30 days

last seen yesterday

dispatch1

victims0

CVEs seen0

What changed

ledger · newest first

2026-10-18todaynew CVE3 new CVEs: CVE-2023-21887, CVE-2023-46805, CVE-2024-21887
2026-10-17yesterdayresurfacedback on the wire — nothing in the previous 30 days

Analyst brief

misp-galaxy

While Volexity largely observed the attacker essentially living off the land, they still deployed a handful of malware files and tools during the course of the incident which primarily consisted of webshells, proxy utilities, and file modifications to allow credential harvesting. Once UTA0178 had access into the network via the ICS VPN appliance, their general approach was to pivot from system to system using compromised credentials. They would then further compromise credentials of users on any new system that was breached, and use these credentials to log into additional systems via RDP. Volexity observed the attacker obtaining credentials in a variety of ways.

Observed targets (as stated by the sources)

1 countries · 0 sectors

assessed origin · Chinaobserved targets · 1

countries · 1

Germany

as stated by MISP galaxy / ransomware.live — not inferred

CVEs UTA0178 is cited as exploiting

2 on CISA KEV

CVE-2024-21887KEV2026-10-17
1. “UNC5221 is a suspected China-nexus actor that Mandiant is tracking as the only group exploiting CVE-2023-46805 and CVE-2024-21887 during the pre-disclosure time frame since early Dec. 2023.”
  cited as exploiting · source: cloud.google.com ↗ · 2026-10-17
2. “The threat actors utilize an exploit chain that consists of an authentication bypass vulnerability (CVE-2023-46805) and a code injection flaw (CVE-2024-21887) to take control of the targeted instances.”
  cited as exploiting · named nearby · source: rewterz.com ↗ · 2026-10-17
CVE-2023-46805KEV2026-10-17
1. “UNC5221 is a suspected China-nexus actor that Mandiant is tracking as the only group exploiting CVE-2023-46805 and CVE-2024-21887 during the pre-disclosure time frame since early Dec. 2023.”
  cited as exploiting · source: cloud.google.com ↗ · 2026-10-17
2. “The threat actors utilize an exploit chain that consists of an authentication bypass vulnerability (CVE-2023-46805) and a code injection flaw (CVE-2024-21887) to take control of the targeted instances.”
  cited as exploiting · named nearby · source: rewterz.com ↗ · 2026-10-17
3. “During these incidents, the threat actor exploited two zero-day vulnerabilities (CVE-2023-21887 and CVE-2023-46805) affecting Ivanti Connect Secure VPN to bypass authentication methods”
  cited as exploiting · named nearby · source: quointelligence.eu ↗ · 2026-10-17
CVE-2023-218872026-10-17
1. “During these incidents, the threat actor exploited two zero-day vulnerabilities (CVE-2023-21887 and CVE-2023-46805) affecting Ivanti Connect Secure VPN to bypass authentication methods”
  cited as exploiting · named nearby · source: quointelligence.eu ↗ · 2026-10-17

Each line is what a source says, quoted, with the source linked under it. A citation is a source's claim, not our confirmation: read the source before you act on it.

Detections

6 rules · Sigma · QRadar · Cortex

CVE exploitation
CVE-2023-46805 exploitation attempt
CVE-2023-46805 · GhostEmperor · UNC5337 · UTA0178 · WARP PANDA
T1190conf 90SIG AQL XQL
CVE exploitation
CVE-2024-21887 exploitation attempt
CVE-2024-21887 · UNC5325 · UNC5330 · UNC5337 · UTA0178 · WARP PANDA
T1190conf 90SIG AQL XQL

Generated by skopnix from this finding, each with false-positive notes. Open the list →

Take it with you

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References

8 sources

Track UTA0178 on the wire.

This dossier is already data: the keyless actor API and a STIX 2.1 bundle. Mentions on the wire reach Telegram and RSS as they land.

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Paste what you run: the CVEs exploited in the wild against it, and who is cited as exploiting them, with the report.

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