← Library
splApache-2.0from splunk/security_content

Rundll32 DNSQuery

The following analytic detects a suspicious `rundll32.exe` process making HTTP connections and performing DNS queries to web domains. It leverages Sysmon EventCode 22 logs to identify these activities. This behavior is significant as it is commonly associated with IcedID malware, where `rundll32.exe` checks internet connectivity and communicates with C&C servers to download configurations and other components. If confirmed malicious, this activity could allow attackers to establish persistence, download additional payloads, and exfiltrate sensitive data, posing a severe threat to the network.

Quality
67
FP risk
Forks
0
Views
0
Rule source🔒 locked
🔒

Sign in to view the rule source

Free accounts can view the source for the top-ranked rules. Create one in seconds — no credit card required.

Sign in →