# Tstark: threat group profile

> Tstark is a threat group thought to operate from China. Public reporting about it is still limited. This free profile brings together what is known about it, so you can judge the risk to you. It lists the other names the group goes by and links to every public report behind it.

Canonical page: https://www.edgeprotect.io/threat-actors/tstark
Breadcrumb: [Home](https://www.edgeprotect.io/) > [Threat groups](https://www.edgeprotect.io/threat-actors) > Tstark

## At a glance

| Fact | Value |
|---|---|
| Attack techniques | 0 |
| Thought to operate from | China |
| Other names | 0 |
| Public reports | 1 |

## Who is Tstark?

Tstark is a threat group thought to operate from China. Public reporting about it is still limited.

### What public reporting says

> TStark is a threat actor identified by X-Ops, associated with a cluster of devices that executed the bookmark buffer overflow exploit targeting CVE-2020-15069 (T1203). The actor exhibited odd telemetry behavior indicative of intermittent VPN usage, switching between IP addresses geolocated to Hong Kong and Chengdu. Analysis revealed malware samples for Mac OS X and iOS, as well as IFRAME injection code exploiting a WebAssembly vulnerability (T1189). Additionally, TStark was linked to the development of libsophos.so and the deployment of malicious payloads across their devices.

## Public reports about Tstark

- https://news.sophos.com/en-us/2024/10/31/pacific-rim-timeline/

## Frequently asked questions

### Who is Tstark?

Tstark is a threat group thought to operate from China. Public reporting about it is still limited.

### Where is Tstark thought to be based?

Public reporting places Tstark as operating from China. Attribution is never certain: it rests on the tools, infrastructure and targets researchers have seen.

### How do I know if Tstark is a risk to my business?

Create an account and tell us the software you run. We match it against known flaws, including those linked to threat groups, rank each one from 0 to 100 and tell you as soon as we spot something that affects you.

## Check whether it matters to your business

A free EdgeProtect account (no card needed) matches the software you run against known flaws, including those linked to threat groups, ranks each one from 0 to 100 and tells you as soon as we spot something that affects you. It also shows which threat groups and ransomware gangs are hitting your sector, with profiles of over 900 groups and a PDF dossier for each.

- Start free: https://www.edgeprotect.io/register
- Book a demo: https://www.edgeprotect.io/contact