Threat intelligence / Malware

Tsundere Botnet

[Tsundere Botnet](https://attack.mitre.org/software/S9034) is a botnet first reported in mid-2025 that is delivered via MSI installer or a PowerShell script. It leverages Node.js and JavaScript for payload delivery and execution, and uses smart contracts on the blockchain to host command and control (C2) addresses. [Tsundere Botnet](https://attack.mitre.org/software/S9034) is attributed to a likely Russian-speaking threat actor. A variant named DinDoor has been linked to [MuddyWater](https://attack.mitre.org/groups/G0069) operations and uses the Deno runtime for execution rather than Node.js.(Citation: Checkpoint_MOISCyberCrime_Mar2026)(Citation: SOCRadar_MuddyWaterDindoor_Mar2026)(Citation: CAL_MuddyWater_Mar2026)(Citation: SecureListUbiedo_Tsundere_Nov2025)

Malware

TypeMalware

External ID—

First seen2026-08-14

Last seen2026-08-14

Confidence

—

[Tsundere Botnet](https://attack.mitre.org/software/S9034) is a botnet first reported in mid-2025 that is delivered via MSI installer or a PowerShell script. It leverages Node.js and JavaScript for payload delivery and execution, and uses smart contracts on the blockchain to host command and control (C2) addresses. [Tsundere Botnet](https://attack.mitre.org/software/S9034) is attributed to a likely Russian-speaking threat actor. A variant named DinDoor has been linked to [MuddyWater](https://attack.mitre.org/groups/G0069) operations and uses the Deno runtime for execution rather than Node.js.(Citation: Checkpoint_MOISCyberCrime_Mar2026)(Citation: SOCRadar_MuddyWaterDindoor_Mar2026)(Citation: CAL_MuddyWater_Mar2026)(Citation: SecureListUbiedo_Tsundere_Nov2025)

Labels

malware

18 recorded

Relationships

uses

from MuddyWater

Group

uses

to Command Obfuscation

Technique

uses

to Compromise Software Dependencies and Development Tools

Technique

uses

to Dead Drop Resolver

Technique

uses

to Deobfuscate/Decode Files or Information

Technique

uses

to Encrypted/Encoded File

Technique

uses

to Execution Guardrails

Technique

uses

to Exfiltration to Cloud Storage

Technique

uses

to Hidden Window

Technique

uses

to Ingress Tool Transfer

Technique

uses

Technique

uses

to Match Legitimate Resource Name or Location

Technique

uses

Technique

uses

Technique

uses

to Registry Run Keys / Startup Folder

Technique

uses

to System Information Discovery

Technique

uses

to System Location Discovery

Technique

uses

to Web Protocols

Technique

6 external

References

mitre-attack

S9034

DinDoor

—

Checkpoint_MOISCyberCrime_Mar2026

https://research.checkpoint.com/2026/iranian-mois-actors-the-cyber-crime-connection/

CAL_MuddyWater_Mar2026

https://ctrlaltintel.com/research/MuddyWater/

SOCRadar_MuddyWaterDindoor_Mar2026

https://socradar.io/blog/iran-muddywater-dindoor-malware-us-networks/

SecureListUbiedo_Tsundere_Nov2025

https://securelist.com/tsundere-node-js-botnet-uses-ethereum-blockchain/117979/