CostaBricks has added the entire unobfuscated code of the legitimate open source application Blink to its code.2
tool
CostaBricks S0614
- Type
- malware
- Platform
- Windows
- Created
- 24 May 2021
- Last modified
- 16 April 2025
CostaBricks is a loader that was used to deploy 32-bit backdoors in the CostaRicto campaign.[1]
6
Techniques29th pct
4
Tactics32nd pct
0
Threat groupsNone recorded
1
Campaignunranked
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0614
CostaBricks can implement a custom-built virtual machine mechanism to obfuscate its code.3
CostaBricks can inject a payload into the memory of a compromised host.4
CostaBricks has been used to load SombRAT onto a compromised host.5
CostaBricks has used a number of API calls, including VirtualAlloc, VirtualFree, LoadLibraryA, GetProcAddress, and ExitProcess.6
CostaBricks has the ability to use bytecode to decrypt embedded payloads.7
Standing S0614
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
Techniques629th pct
29th percentile · 71% of 825 ATT&CK software entries have more Enterprise techniques.
Tactics432nd pct
32nd percentile · 68% of 825 ATT&CK software entries have more tactics spanned.
Threat groups061% 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.
Campaign185% 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 / technique17med40th pct
40th percentile · 60% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique8med
Detection coverage S0614
235 distinct rules cover the 6 techniques recorded for this tool. The 237 technique-to-rule mappings resolve to 235 distinct rules, because one rule can cover several techniques. 160 Sigma · 75 Splunk.
6 covered by at least one rule235 distinct rules in total
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