Malicious RoKRAT Staged Loader Files in Temp via LNK (via file_event)

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.003Windows Command Shell
- T1204.002Malicious File
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the creation of the sequentially named toy01.dat, toy02.dat and toy03.bat loader files inside the user Temp directory as staged by the APT37 ToyBox Story campaign. These files form the multi-stage loader chain that ultimately decrypts and executes the RoKRAT payload on disk. Alerting on these campaign-specific staged artifacts catches the delivery step where the loaders are written before execution.

Reporting behind it

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Malicious RoKRAT Staged Loader Files in Temp via LNK (via file_event)

Pivot detection · T1059.003 · 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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