Suspicious GoGRPC Screen Capture Log File Creation (via file_event)

ATT&CK techniques

Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
- T1113Screen Capture
C2
Exfiltration
Impact

What it detects

This rule detects creation of the appscreen.log artifact under the ProgramData appscreen directory that the GoGRPC backdoor writes while capturing screen data. This specific path and filename combination is unique to the malware.

Reporting behind it

Related detections9 linkedT1113 — drag to rearrange

Suspicious RDP Shadow Session Started - Native (via rdp)

Malicious RDP Shadow Session Configuration Enabled - Registry (via registry_event)

Suspicious Screen Capture via PowerShell Graphics API (via process_creation)

Malicious RDP Shadow Session Started - Command (via process_creation)

Windows Registry: EnablePeriodicBackup value set for periodic system hive backups

Windows Recall Enabled by Deleting DisableAIDataAnalysis Registry Value

Windows Recall Enabled by Registry: DisableAIDataAnalysis Set to 0 (Windows)

Windows Recall Enabled via reg.exe Registry Changes (Windows)

Windows PowerShell Screen Capture via CopyFromScreen

Suspicious GoGRPC Screen Capture Log File Creation (via file_event)

Pivot detection · T1113 · 9 related

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

Full detection rule

Unlock this rule to view and copy it

The detection logic is included with a plan. Everything else — context, mappings and implementation details — stays free on this page.

Sign in for 3 free unlocks

Signing in gives you 3 unlocks to spend on any rule in the library. No card, and they do not expire.

Also included

Unlocked rules convert on this page — to Splunk SPL or Splunk — Raw Index SPL or Microsoft Sentinel KQL or Microsoft Sentinel ASIM ASIM KQL or Microsoft Defender XDR KQL or Elastic Security KQL or Elastic Security Lucene or Elastic Security ES|QL or CrowdStrike Falcon CQL or SentinelOne PowerQuery or Palo Alto Cortex XDR XQL or Carbon Black Cloud Platform Search or Carbon Black EDR Process Search or Google Security Operations UDM Search or IBM QRadar AQL or Sumo Logic Cloud SIEM Rules expression or Rapid7 InsightIDR LEQL or Graylog Search or OpenSearch Lucene or OpenSearch PPL PPL or Grafana Loki LogQL or SQLite SQL or Zircolite SQLite — with the log-source profile the engine picked, the field map it used, and everything it could not express. Converting a rule you have unlocked costs no further credit.

See it run on a free rule →Convert your own rule →