Malicious PHASEJAM Web Shell Written Into Ivanti CGI Endpoints (via file_event)

ATT&CK techniques

Persistence

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1505.003Web Shell
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects modification of the Ivanti Connect Secure getComponent.cgi or restAuth.cgi files, into which the PHASEJAM web shell was injected during zero-day exploitation. Writes to these trusted CGI endpoints grant persistent remote command execution on the appliance.

Reporting behind it

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Malicious PHASEJAM Web Shell Written Into Ivanti CGI Endpoints (via file_event)

Pivot detection · T1505.003 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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