Suspicious StrelaStealer DLL Execution via Rundll32 Hello Export from Temp (via process_creation)

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1218.011Rundll32
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects rundll32.exe invoking the hello export of a DLL located in an AppData or temp directory, the loader behavior StrelaStealer uses to run its stealer payload dropped by a JScript file. The combination of a proxy execution binary, a user writable path, and the campaign specific export name reflects the StrelaStealer execution stage rather than normal library invocation.

Reporting behind it

Related detections9 linkedT1218.011 — drag to rearrange

Malicious Scheduled rundll32 Execution of ProgramData VMware DLL by BianLian

Malicious Mispadu Payload Execution from WebDAV Share via Rundll32 (via process_creation)

Malicious rundll32 Execution of Lazarus JavaPackage DLL (via process_creation)

Malicious Cobalt Strike Loader via rundll32 From ProgramData (via process_creation)

Malicious rundll32 IternalJob Export Spawned by wscript (via process_creation)

Suspicious Rundll32 Copied to Startup Folder via Blister Loader

Suspicious Rundll32 Persistence via Registry Run Key (via registry_set)

Malicious Rundll32 Execution of Image File Export via PLUSDROP

Suspicious Rundll32 Loading Non-DLL Image Extension File

Suspicious StrelaStealer DLL Execution via Rundll32 Hello Export from Temp (via process_creation)

Pivot detection · T1218.011 · 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 →