PS1 is distributed as a set of encrypted files and scripts.2
tool
PS1 S0613
- Type
- malware
- Platform
- Windows
- Created
- 24 May 2021
- Last modified
- 11 April 2024
PS1 is a loader that was used to deploy 64-bit backdoors in the CostaRicto campaign.[1]
5
TechniquesBottom 23%
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 S0613
CostaBricks can download additional payloads onto a compromised host.5
PS1 can use an XOR key to decrypt a PowerShell loader and payload binary.6
Standing S0613
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
Techniques5Bottom 23%
23rd percentile · 77% 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 / technique20med48th pct
48th percentile · 52% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique11med
Detection coverage S0613
444 distinct rules cover the 5 techniques recorded for this tool. The 461 technique-to-rule mappings resolve to 444 distinct rules, because one rule can cover several techniques. 334 Sigma · 110 Splunk.
5 covered by at least one rule444 distinct rules in total
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