Suspicious Payload Retrieval via finger LOLBin

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 execution of finger.exe, a living-off-the-land binary abused to retrieve remote payloads in a Huntress-observed ClickFix campaign delivering CastleLoader. The lure tricks users into pasting a clipboard command that uses finger.exe to pull attacker content. Because finger.exe is essentially unused on modern Windows, its execution is a strong indicator of malicious download activity.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange

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Malicious Web Server Spawning Command Shell and curl Download via Webshell

Suspicious Download or Exfiltration via Finger LOLBin

Suspicious Data Exfiltration via finger to Remote Host

Suspicious File Download via PowerShell WebClient DownloadFile

Suspicious Remote HTA Execution via mshta over HTTP

Suspicious Payload Retrieval via finger LOLBin

Pivot detection · T1105 · 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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