UpdateRetriever Beacon Execution from LocalAppData in Fake Converter Campaign (via process_creation)

ATT&CK techniques

Execution → Priv Esc

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
Exfiltration
Impact

What it detects

This rule detects execution of UpdateRetriever.exe from a LocalAppData subdirectory, the second-stage .NET beacon installed by the fake file-converter malvertising ecosystem and run through a recurring scheduled task. Adversaries leverage this generic assembly-execution engine to fetch and run payloads on demand, making detection useful for catching persistence and command-and-control staging.

Reporting behind it

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UpdateRetriever Beacon Execution from LocalAppData in Fake Converter Campaign (via process_creation)

Pivot detection · T1053.005 · 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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