Threat intelligence / Malware
OilCheck
[OilCheck](https://attack.mitre.org/software/S1171) is a C#/.NET downloader that has been used by [OilRig](https://attack.mitre.org/groups/G0049) since at least 2022 including against targets in Israel. [OilCheck](https://attack.mitre.org/software/S1171) uses draft messages created in a shared email account for C2 communication.(Citation: ESET OilRig Downloaders DEC 2023)
Malware
TypeMalware
External ID—
First seen2026-08-14
Last seen2026-08-14
Confidence
—
[OilCheck](https://attack.mitre.org/software/S1171) is a C#/.NET downloader that has been used by [OilRig](https://attack.mitre.org/groups/G0049) since at least 2022 including against targets in Israel. [OilCheck](https://attack.mitre.org/software/S1171) uses draft messages created in a shared email account for C2 communication.(Citation: ESET OilRig Downloaders DEC 2023)
Labels
4 recorded
Relationships
2 external