# Mustard Tempest: threat group profile

> Mustard Tempest is a threat group. Public reporting links it to 9 attack techniques. This free profile shows how it works, stage by stage, 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/mustard-tempest
Breadcrumb: [Home](https://www.edgeprotect.io/) > [Threat groups](https://www.edgeprotect.io/threat-actors) > Mustard Tempest

## At a glance

| Fact | Value |
|---|---|
| Attack techniques | 9 (plus 9 sub-techniques) |
| Thought to operate from | Not known |
| Other names | 2 |
| Public reports | 2 |

## Who is Mustard Tempest?

Mustard Tempest is a threat group. Public reporting links it to 9 attack techniques.

### Also known as

DEV-0206, Purple Vallhund

Security companies each give the same group their own name, so one group can have many.

### What public reporting says

> Mustard Tempest is a threat actor that primarily uses malvertising as their main technique to gain access to and profile networks. They deploy FakeUpdates, disguised as browser updates or software packages, to lure targets into downloading a ZIP file containing a JavaScript file. Once executed, the JavaScript framework acts as a loader for other malware campaigns, often Cobalt Strike payloads. Mustard Tempest has been associated with the cybercrime syndicate Mustard Tempest, also known as EvilCorp, and has been involved in ransomware attacks using payloads such as WastedLocker, PhoenixLocker, and Macaw.

## How does Mustard Tempest attack? Stage by stage

Each technique is a known way attackers research, get in, stay hidden or do damage. Here are the 9 linked to Mustard Tempest. Some techniques belong to more than one stage. Public reporting also lists 9 more specific variations of them, called sub-techniques.

### 1. Research (0)

- None linked in public reporting.

### 2. Preparation (3)

- T1583: Acquire Infrastructure
- T1584: Compromise Infrastructure
- T1608: Stage Capabilities

### 3. Getting in (2)

- T1189: Drive-by Compromise
- T1566: Phishing

### 4. Running code (1)

- T1204: User Execution

### 5. Staying in (0)

- None linked in public reporting.

### 6. Taking control (0)

- None linked in public reporting.

### 7. Hiding (1)

- T1036: Masquerading

### 8. Disabling defences (0)

- None linked in public reporting.

### 9. Stealing passwords (0)

- None linked in public reporting.

### 10. Looking around (1)

- T1082: System Information Discovery

### 11. Spreading (0)

- None linked in public reporting.

### 12. Gathering data (0)

- None linked in public reporting.

### 13. Keeping contact (1)

- T1105: Ingress Tool Transfer

### 14. Taking data out (0)

- None linked in public reporting.

### 15. Causing damage (0)

- None linked in public reporting.

## Public reports about Mustard Tempest

- https://www.microsoft.com/en-us/security/blog/2022/05/09/ransomware-as-a-service-understanding-the-cybercrime-gig-economy-and-how-to-protect-yourself/
- http://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity/

## Frequently asked questions

### Who is Mustard Tempest?

Mustard Tempest is a threat group. Public reporting links it to 9 attack techniques.

### How does Mustard Tempest attack?

Public reporting links Mustard Tempest to 9 attack techniques. Most of them are about preparation, getting in and running code.

### How do I know if Mustard Tempest 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

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