Suspicious VOLTZITE Single-Character Named ZIP Exfil Staging (via file_event)

ATT&CK techniques

Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
- T1074.001Local Data Staging
- T1560.001Archive via Utility
C2
Exfiltration
Impact

What it detects

This rule detects creation of ZIP archives whose file name is a single letter or digit, a staging convention observed in VOLTZITE intrusions. The group compresses collected data into minimally named archives to blend into disk activity before exfiltration. Detecting these staging files provides an opportunity to interrupt data theft prior to transfer.

Reporting behind it

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Suspicious VOLTZITE Single-Character Named ZIP Exfil Staging (via file_event)

Pivot detection · T1560.001 · 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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