splunk-security_content/docs/_stories/acidrain.md

title, last_modified_at, toc, toc_label, tags

title	last_modified_at	toc	toc_label	tags
AcidRain	2022-04-12	true		Splunk Enterprise Splunk Enterprise Security Splunk Cloud Endpoint Exploitation

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Description

Leverage searches that allow you to detect and investigate unusual activities that might relate to the acidrain malware including deleting of files and etc. AcidRain is an ELF MIPS malware specifically designed to wipe modems and routers. The complete list of targeted devices is unknown at this time, but WatchGuard FireBox has specifically been listed as a target. This malware is capable of wiping and deleting non-standard linux files and overwriting storage device files that might related to router, ssd card and many more.

• Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
• Datamodel: Endpoint
• Last Updated: 2022-04-12
• Author: Teoderick Contreras, Splunk
• ID: c68717c6-4938-434b-987c-e1ce9d516124

Narrative

Adversaries may use this technique to maximize the impact on the target organization in operations where network wide availability interruption is the goal.

Detections

Name	Technique	Type
Linux Deletion Of Cron Jobs	Data Destruction, File Deletion, Indicator Removal on Host	Anomaly
Linux Deletion Of Init Daemon Script	Data Destruction, File Deletion, Indicator Removal on Host	TTP
Linux Deletion Of Services	Data Destruction, File Deletion, Indicator Removal on Host	TTP
Linux High Frequency Of File Deletion In Etc Folder	Data Destruction, File Deletion, Indicator Removal on Host	Anomaly

Reference

• https://www.sentinelone.com/labs/acidrain-a-modem-wiper-rains-down-on-europe/

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