Cyclops Blink can upload files from a compromised host.4
tool
Cyclops Blink S0687
- Type
- malware
- Platform
- Network Devices
- Created
- 3 March 2022
- Last modified
- 12 May 2026
Cyclops Blink is a modular malware that has been used in widespread campaigns by Sandworm Team since at least 2019 to target Small/Home Office (SOHO) network devices, including WatchGuard and Asus. Cyclops Blink is assessed to be a replacement for VPNFilter, a similar platform targeting network devices.[1][2][3]
21
TechniquesTop 18%
9
TacticsTop 11%
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 S0687
Cyclops Blink can use the Linux API if_nameindex to gather network interface names.56
Cyclops Blink can rename its running process to [kworker:0/1] to masquerade as a Linux kernel thread. Cyclops Blink has also named RC scripts used for persistence after WatchGuard artifacts.7
Cyclops Blink has the ability to execute on device startup, using a modified RC script named S51armled.8
Cyclops Blink has the ability to upload exfiltrated files to a C2 server.9
Cyclops Blink can enumerate the process it is currently running under.10
Standing S0687
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
Techniques21Top 18%
82nd percentile · 82% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics9Top 11%
89th percentile · 89% of 825 ATT&CK software entries have this many tactics spanned or fewer.
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 / technique14med29th pct
29th percentile · 71% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique4med
Detection coverage S0687
441 distinct rules cover the 21 techniques recorded for this tool. The 474 technique-to-rule mappings resolve to 441 distinct rules, because one rule can cover several techniques. 313 Sigma · 128 Splunk.
19 covered by at least one rule2 with no coverage441 distinct rules in total
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