3 malware families

Calypso APT

Also known ascalypso_apt

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MITRE ATT&CK

Tradecraft

8 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.

6 of 15 tactics9 techniques×N= number of intelligence reports citing this technique

MITRE ATT&CK

TA0002

Execution

1 technique

T1059

Command and Scripting Interpreter

TA0005

Stealth

1 technique

T1070

Indicator Removal

T1070.004

File Deletion

TA0007

Discovery

1 technique

T1083

File and Directory Discovery

TA0009

Collection

1 technique

T1113

Screen Capture

TA0011

Command and Control

2 techniques

T1090

Proxy

T1090.001

Internal Proxy

T1105

Ingress Tool Transfer

TA0010

Exfiltration

1 technique

T1041

Exfiltration Over C2 Channel

ARSENAL

Associated malware families

3 malware families attributed to this actor across reporting.

FamilyContextEvidenceLast seen

JFMBackdoor“Our analysis revolves around an open directory found during our hunting of Red Lamassu, containing both an aforementioned kworker sample, alongside a fully featured Windows backdoor, which we call JFMBackdoor.”1May 29, 2026

kworker“Our analysis revolves around an open directory found during our hunting of Red Lamassu, containing both an aforementioned kworker sample, alongside a fully featured Windows backdoor, which we call JFMBackdoor.”1May 29, 2026

NoodleRATDuring our analysis, we discovered that there are different types of Win.NOODLERAT that implement various command IDs... Linux.NOODLERAT is an ELF version of Noodle RAT, but with a different design.1May 26, 2026

ACTIVITY FEED

Recent activity

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No public activity observed for this threat actor.

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Target overlap

Match sector + geo + tech-stack targeting against your real footprint.

Tradecraft mapping8

Every observed MITRE ATT&CK technique, grouped by tactic.

Malware arsenal3

Families this actor is known to deploy, with IOCs and behavior.

Exploited CVEs

CVEs this actor has used in known campaigns.

Detection signatures

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

Observables

Domains, IPs, and hashes tied to this actor, refreshed continuously.