Malicious Outlook Process Memory Dump via procdump

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-05-09
Updated
2026-08-28

ATT&CK techniques

Cred Access → Collection
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Discovery

  9. Lateral Movement

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects procdump creating a full memory dump of the Outlook process, a technique the ToddyCat APT used to extract email data and credentials from memory. The attackers ran procdump64.exe with -ma against OUTLOOK.exe to capture its address space for later mining. Dumping the memory of a mail client is a strong sign of credential and email data theft rather than routine troubleshooting.

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