Tsundere Botnet’s MSI installer has Base64-encoded command execution.5
tool
Tsundere Botnet S9034
- Type
- malware
- Platforms
- Linux, macOS, Windows
- Created
- 20 April 2026
- Last modified
- 12 May 2026
Tsundere Botnet 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 is attributed to a likely Russian-speaking threat actor.
A variant named DinDoor has been linked to MuddyWater operations and uses the Deno runtime for execution rather than Node.js.[1][2][3][4]
17
Techniques72nd pct
8
TacticsTop 20%
1
Threat groupunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S9034
Tsundere Botnet’s loader contained AES-CBC/PKCS7 encrypted blobs, which were descrypted and written to disk.6
Tsundere Botnet has disguised its MSI installer as a fake installer for popular games and software.7
Tsundere Botnet has been distributed via a PowerShell script.89
Tsundere Botnet has the ability to run JavaScript code from the C2 server. Additionally, Tsundere Botnet has used Node.js to execute JavaScript code for the loader component.10
Tsundere Botnet has obtained the WebSocket C2 address by making remote procedure call (RPC) APIs to Ethereum blockchain nodes.1112
Standing S9034
Reach is how much of ATT&CK this tool touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.
Reach
Techniques1772nd pct
72nd percentile · 72% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics8Top 20%
80th percentile · 80% of 825 ATT&CK software entries have this many tactics spanned or fewer.
Threat group161% tie · 22 values
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
Campaigns085% tie · 8 values
85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
Rules / technique20med48th pct
48th percentile · 52% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique3med
Detection coverage S9034
687 distinct rules cover the 17 techniques recorded for this tool. The 735 technique-to-rule mappings resolve to 687 distinct rules, because one rule can cover several techniques. 516 Sigma · 171 Splunk.
16 covered by at least one rule1 with no coverage687 distinct rules in total
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