Suspicious SyncFuture GcServices Configuration Key Creation

ATT&CK techniques

Persistence → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1112Modify Registry
Priv Esc
Defense Evasion
- T1112Modify Registry
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects writes to an HKCU Software Microsoft GcServices key, a fake Microsoft-branded configuration store used by SyncFuture malware. The actors stored year and MD5-derived values under this masqueraded key to hold implant configuration. A GcServices subkey under the Microsoft software hive does not correspond to any legitimate product and indicates implant configuration persistence.

Reporting behind it

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Suspicious SyncFuture GcServices Configuration Key Creation

Pivot detection · T1112 · 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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