MalwareUsed by 3 actors

Plane9

For your environment

Hunt this family in your stack

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THREAT ACTORS

Groups observed using it

3 distinct threat actors attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.

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UAC-0184

Beyond the published Plane9 → IDAT-XOR-LZNT1 → PassMark-BurnInTest chain, UAC-0184 (UNC5435 / MB-0007) operates a template-driven HTA crypter...

via github gist webgist.github.com

UNC5435

Beyond the published Plane9 → IDAT-XOR-LZNT1 → PassMark-BurnInTest chain, UAC-0184 (UNC5435 / MB-0007) operates a template-driven HTA crypter...

via github gist webgist.github.com

MB-0007

Beyond the published Plane9 → IDAT-XOR-LZNT1 → PassMark-BurnInTest chain, UAC-0184 (UNC5435 / MB-0007) operates a template-driven HTA crypter...

via github gist webgist.github.com

MITRE ATT&CK

Techniques & procedures

1 distinct technique documented for this family, organized by ATT&CK tactic.

Execution

1 technique

T1574.001DLLEvidence1

TacticsExecution Stealth

In combination with executable files and several DLLs, this strongly suggests a DLL sideloading scenario... ClusterOverlay64.exe -> Plane9Engine.dll -> openvr_api.dll -> kernel-diag.lib

Stealth

1 technique

T1574.001DLLEvidence1

TacticsExecution Stealth

In combination with executable files and several DLLs, this strongly suggests a DLL sideloading scenario... ClusterOverlay64.exe -> Plane9Engine.dll -> openvr_api.dll -> kernel-diag.lib

ACTIVITY FEED

Recent activity

1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

1 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets match these IOCs, which detections are missing, which campaigns to expect next, and what to do in the next 30 minutes.

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IOC matching

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution3

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping1

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.