Malicious Bumblebee WebDAV Share Mount via LNK

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1204.002Malicious File
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects command lines that mount or access the attacker abused WebDAV share webdav.4shared.com which the Bumblebee loader uses to stage its LNK driven infection chain. Adversaries rely on remote WebDAV shares to deliver payloads while bypassing download controls which makes this an early indicator of the Bumblebee delivery chain.

Reporting behind it

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Malicious Bumblebee WebDAV Share Mount via LNK

Pivot detection · T1204.002 · 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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