Curl Downloading Executable to Public User Directory

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1105Ingress Tool Transfer
Exfiltration
Impact

What it detects

This rule detects curl.exe fetching a remote file and writing an executable into the C:\\Users\\Public directory. Lazarus operators used curl to download a payload as notify.exe into the public user folder after exploiting a ManageEngine vulnerability. Staging a downloaded binary in a world-writable public path is a common precursor to persistence and execution.

Reporting behind it

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Curl Downloading Executable to Public User Directory

Pivot detection · T1105 · 9 related

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