HamsaUpdate Wiper Trigger via F5UPDATER ConfirmDeleteFiles Argument (via process_creation)

ATT&CK techniques

Impact

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1485Data Destruction

What it detects

This rule detects execution of the F5UPDATER wiper masquerading as an F5 update tool with the ConfirmDeleteFiles argument that triggers destructive file deletion without a confirmation prompt in Operation HamsaUpdate against Israeli infrastructure. The specific loader name paired with this argument marks the transition from staging to data destruction.

Reporting behind it

Related detections9 linkedT1485 — drag to rearrange

Suspicious Secure Deletion of Free Space via Cipher (via process_creation)

Malicious Scheduled Task Deploying DYNOWIPER Payload (via process_creation)

Malicious Mini Shai-Hulud TanStack Destructive rm Killswitch (via process_creation)

Malicious S3 Object Encryption with Customer Provided Key via CopyObject

Malicious Cloud Storage Destruction by Cloud Build Service Account

Windows Event Log: MSSQLSERVER$AUDIT alerts on DROP/ TRUNCATE destructive SQL statements

Windows Process Creation: Renamed Sysinternals Sdelete Execution

Windows Process Command-Line Indicators of BlackByte Ransomware Activity

Windows: cipher.exe Overwrites Deleted Data Using /w

HamsaUpdate Wiper Trigger via F5UPDATER ConfirmDeleteFiles Argument (via process_creation)

Pivot detection · T1485 · 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 →