GrimAgent can pad C2 messages with random generated values.2
tool
GrimAgent S0632
- Type
- malware
- Platform
- Windows
- Created
- 16 July 2021
- Last modified
- 19 September 2024
GrimAgent is a backdoor that has been used before the deployment of Ryuk ransomware since at least 2020; it is likely used by FIN6 and Wizard Spider.[1]
25
TechniquesTop 12%
8
TacticsTop 20%
2
Threat groupsunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0632
Standing S0632
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
Techniques25Top 12%
88th percentile · 88% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics8Top 20%
80th percentile · 80% of 825 ATT&CK software entries have this many tactics spanned or fewer.
Threat groups261% 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 / technique20med48th pct
48th percentile · 52% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique5med
Detection coverage S0632
715 distinct rules cover the 25 techniques recorded for this tool. The 762 technique-to-rule mappings resolve to 715 distinct rules, because one rule can cover several techniques. 530 Sigma · 185 Splunk.
20 covered by at least one rule5 with no coverage715 distinct rules in total
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