Sigma rule: AWS Snapshot Backup Exfiltration

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-db238a890444, updated 2021-08-19T00:00:00.000Z.

Rule

Title
AWS Snapshot Backup Exfiltration
Status
test
Level
medium
Author
Darin Smith
Date
2021-05-17
Modified
2021-08-19
File
rules/cloud/aws/cloudtrail/aws_snapshot_backup_exfiltration.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the modification of an EC2 snapshot's permissions to enable access from another account

Log source

product
aws
service
cloudtrail

Detection

selection_source:
    eventSource: ec2.amazonaws.com
    eventName: ModifySnapshotAttribute
condition: selection_source

False positives (as the rule lists them)

  • Valid change to a snapshot's permissions

Tags

  • attack.exfiltration
  • attack.t1537

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/aws/cloudtrail/aws_snapshot_backup_exfiltration.yml

Sources and licences

  • SigmaHQ

    "AWS Snapshot Backup Exfiltration" by Darin Smith (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/aws/cloudtrail/aws_snapshot_backup_exfiltration.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: AWS Snapshot Backup Exfiltration",
entity page, dataset version ref-db238a890444, updated 2021-08-19T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/abae8fec-57bd-4f87-aff6-6e3db989843d (accessed 2026-11-03).
Underlying source: SigmaHQ rule abae8fec-57bd-4f87-aff6-6e3db989843d, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.