Malicious Scheduled Task Masquerading as GoogleUpdate Launching SSH Reverse Shell

ATT&CK techniques

Execution → C2

Recon
Resource Dev
Initial Access
Execution
- T1053.005Scheduled Task
Persistence
- T1053.005Scheduled Task
Priv Esc
- T1053.005Scheduled Task
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1219Remote Access Tools
Exfiltration
Impact

What it detects

This rule detects creation of a scheduled task named GoogleUpdateTaskMachine whose action invokes OpenSSH to establish a reverse shell. The ToyMaker access broker registers this masqueraded task so an outbound SSH connection provides durable remote access, letting the operator hand off footholds to ransomware affiliates while appearing to be a benign updater.

Reporting behind it

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Malicious Scheduled Task Masquerading as GoogleUpdate Launching SSH Reverse Shell

Pivot detection · T1219 · 9 related

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