KongTuke Microsoft Teams initial access campaign
Campaign
Summary
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The KongTuke campaign now uses Microsoft Teams social engineering to gain persistent access to corporate networks, shortening initial compromise to under five minutes and increasing downstream abuse risk. Operators pose as IT/help-desk staff and push victims to run a malicious PowerShell command that deploys ModeloRAT. The activity has run since at least April 2026 and has rotated through five Microsoft 365 tenants to evade blocking.
Related Happenings
Microsoft RDP file security guidance
Advisory/Mitigation
H score28
First: 14.07.2026 21:49
Last: 14.07.2026 21:49
Sources 1
About this happening:
Microsoft issued RDP mitigation guidance that restricts which .rdp files users can open and recommends migrating trusted publishers to SHA-256 thumbprints, reducing ph...
Microsoft RDP file security guidance
Advisory/MitigationAbout this happening: Microsoft issued RDP mitigation guidance that restricts which .rdp files users can open and recommends migrating trusted publishers to SHA-256 thumbprints, reducing ph...
Microsoft Teams admin policy adds approval-based control for third-party bots
Security Tool/Service
H score11
First: 30.06.2026 13:52
Last: 30.06.2026 13:52
Sources 1
About this happening:
Microsoft Teams introduced an admin policy that lets organizers prevent third-party bots from joining meetings without approval. The control improves visibility over e...
Microsoft Teams admin policy adds approval-based control for third-party bots
Security Tool/ServiceAbout this happening: Microsoft Teams introduced an admin policy that lets organizers prevent third-party bots from joining meetings without approval. The control improves visibility over e...
Microsoft Teams third-party bot approval controls for meeting social-engineering risk
Defensive Guidance
H score11
First: 30.06.2026 13:52
Last: 30.06.2026 13:52
Sources 1
About this happening:
Microsoft Teams has added admin controls that block third-party bots without approval, reducing meeting social-engineering risk across managed tenants. The policy impr...
Microsoft Teams third-party bot approval controls for meeting social-engineering risk
Defensive GuidanceAbout this happening: Microsoft Teams has added admin controls that block third-party bots without approval, reducing meeting social-engineering risk across managed tenants. The policy impr...
KongTuke ClickFix and Teams access-seeking campaign
Campaign
H score33
First: 25.06.2026 11:54
Last: 25.06.2026 11:54
Sources 1
About this happening:
The KongTuke operation is using ClickFix lures and Microsoft Teams messages to widen access-seeking attacks against multiple organizations, increasing the risk of...
KongTuke ClickFix and Teams access-seeking campaign
CampaignAbout this happening: The KongTuke operation is using ClickFix lures and Microsoft Teams messages to widen access-seeking attacks against multiple organizations, increasing the risk of...
Backdoor.Turn Microsoft Teams TURN relay malware activity
Malware Activity
H score29
First: 16.06.2026 13:18
Last: 16.06.2026 13:18
Sources 1
About this happening:
Backdoor.Turn is a Go-based RAT tied to DragonForce ransomware operators that hid command-and-control traffic through Microsoft Teams TURN relay infrastructure dur...
Backdoor.Turn Microsoft Teams TURN relay malware activity
Malware ActivityAbout this happening: Backdoor.Turn is a Go-based RAT tied to DragonForce ransomware operators that hid command-and-control traffic through Microsoft Teams TURN relay infrastructure dur...
Timeline
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14.05.2026 15:12 2 articles · 2mo ago
KongTuke uses Microsoft Teams to social-engineer employees
Initial DisclosureKongTuke uses Microsoft Teams social engineering against company employees, posing as IT and help-desk staff to persuade victims to run a malicious PowerShell command that downloads a Dropbox ZIP, loads a portable WinPython environment, and launches ModeloRAT. The campaign has been active since at least April 2026, has rotated through five Microsoft 365 tenants to evade blocking, and defenders can blunt the activity by restricting external Microsoft Teams federation with allowlists and hunting for indicators of compromise.
Show sources
- KongTuke hackers now use Microsoft Teams for corporate breaches — www.bleepingcomputer.com — 14.05.2026 15:12
- KongTuke hackers now use Microsoft Teams for corporate breaches — www.bleepingcomputer.com — 14.05.2026 15:12