Suspicious curl Download to AppData Temp Directory (via process_creation)

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 downloading remote content directly into the AppData Local Temp directory, the ingress technique DarkGate uses to stage its AutoIt loader and encrypted payload. Fetching executables into user Temp via curl is uncommon for legitimate software. Combined with an HTTP source this suggests malware staging.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange

Malicious Hidden Virtual Machine Launched via QEMU for Persistence

Suspicious node.exe Execution Spawned by PowerShell

Suspicious Executable Download to Temp Directory via curl on Linux

Suspicious BITSAdmin File Transfer Into ProgramData via Process Creation (via process_creation)

Suspicious PowerShell Download Cradle via IEX and DownloadString (via process_creation)

Suspicious Remote File Download via certutil URLCache (via process_creation)

Suspicious WebDAV Retrieval via rundll32 and davclnt.dll (via process_creation)

Suspicious PowerShell Download to Temp and In-Memory Execution via IEX (via process_creation)

Suspicious PowerShell Download of Bumblebee Stager Files (via process_creation)

Suspicious curl Download to AppData Temp Directory (via process_creation)

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.

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 →