OilCheck can use a REST-based Microsoft Graph API to access draft messages in a shared Microsoft Office 365 Outlook email account used for C2 communication.2
tool
OilCheck S1171
- Type
- malware
- Platform
- Windows
- Created
- 26 November 2024
- Last modified
- 27 November 2024
OilCheck is a C#/.NET downloader that has been used by OilRig since at least 2022 including against targets in Israel. OilCheck uses draft messages created in a shared email account for C2 communication.[1]
3
TechniquesBottom 12%
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 S1171
Standing S1171
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
Techniques3Bottom 12%
12th percentile · 88% 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 / technique22med53rd pct
53rd percentile · 53% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Tests / technique1med
Detection coverage S1171
153 distinct rules cover the 3 techniques recorded for this tool. The 157 technique-to-rule mappings resolve to 153 distinct rules, because one rule can cover several techniques. 100 Sigma · 53 Splunk.
3 covered by at least one rule153 distinct rules in total
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