Suspicious Masqueraded DAT File Loader Chain in Loader Stage (via process_creation)

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1027Obfuscated Files or Information
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects command lines referencing the SecureBootUEFI.dat, Service.dat, cn.dat or sp.dat staging files used by APT-C-60 in the SpyGlace deployment chain. These .dat-named artifacts are sequentially decoded loaders masquerading as data files to conceal the final backdoor payload.

Reporting behind it

Related detections9 linkedT1027 — drag to rearrange

Malicious 3CX Second-Stage C2 Icon Retrieval from GitHub IconStorages (via dns_query)

Suspicious Command Execution via ComSpec Environment Variable Obfuscation

Suspicious PowerShell String Concatenation Obfuscation for Batch Extension via LNK (via process_creation)

Suspicious PIF Payload Assembly via copy /b Binary Concatenation

Suspicious PowerShell Spawned from PyInstaller MEI Extraction Folder (via process_creation)

Suspicious PowerShell Encoded Command Execution

Suspicious Explorer Executing Path With Trailing Dot via LNK Stomping

Malicious BADIIS Driver Dropped to System32 Drivers Directory (via file_event)

Suspicious PowerShell Invoke-Expression with Replace Obfuscation

Suspicious Masqueraded DAT File Loader Chain in Loader Stage (via process_creation)

Pivot detection · T1027 · 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 →