AcidRain identifies specific files and directories in the Linux operating system associated with storage devices.5
tool
AcidRain S1125
- Type
- malware
- Platforms
- Network Devices, Linux
- Created
- 25 March 2024
- Last modified
- 15 April 2025
AcidRain is an ELF binary targeting modems and routers using MIPS architecture.[1] AcidRain is associated with the ViaSat KA-SAT communication outage that took place during the initial phases of the 2022 full-scale invasion of Ukraine. Analysis indicates overlap with another network device-targeting malware, VPNFilter, associated with Sandworm Team.[1] US and European government sources linked AcidRain to Russian government entities, while Ukrainian government sources linked AcidRain specifically to Sandworm Team.[2][3]
4
TechniquesBottom 17%
2
TacticsBottom 12%
1
Threat groupunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S1125
AcidRain performs an in-depth wipe of the target filesystem and various attached storage devices through either a data overwrite or calling various IOCTLS to erase it.6
AcidRain reboots the target system once the various wiping processes are complete.7
AcidRain iterates over device file identifiers on the target, opens the device file, and either overwrites the file or calls various IOCTLS commands to erase it.8
Standing S1125
Reach is how much of ATT&CK this tool touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.
Reach
Techniques4Bottom 17%
17th percentile · 83% of 825 ATT&CK software entries have more Enterprise techniques.
Tactics2Bottom 12%
12th percentile · 88% of 825 ATT&CK software entries have more tactics spanned.
Threat group161% tie · 22 values
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
Campaigns085% tie · 8 values
85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
Rules / technique22.5med55th pct
55th percentile · 55% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Tests / technique7med
Detection coverage S1125
103 distinct rules cover the 4 techniques recorded for this tool. 54 Sigma · 49 Splunk.
4 covered by at least one rule103 distinct rules in total
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