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It is plausible that this design may allow NOBELIUM to selectively choose its targets and gain a level of understanding of potential discovery should the implant be run in environments unfamiliar to the actor. MSTIC is currently unaware if these tools benefit from any server-side component.

Opportunity for restraint: Consistent with other tools utilized by NOBELIUM, BoomBox, VaporRage, and some variants of NativeZone conduct some level of profiling on an affected system’s environment.

All initial communications leverage the Dropbox API via HTTPS.

Use of t rusted channels: BoomBox is a uniquely developed downloader used to obtain a later-stage payload from an actor-controlled Dropbox account.

While its technical specifics are not unprecedented, NOBELIUM’s operational security priorities have likely influenced the design of this toolset, which demonstrate preferable features for an actor operating in potentially high-risk and high-visibility environments. We have also outlined related alerts in Microsoft 365 Defender, so that security teams can check to see if activity has been flagged for investigation.Įach of the NOBELIUM tools discussed in this blog is designed for flexibility, enabling the actor to adapt to operational challenges over time. Get the latest information and guidance from Microsoft at. This sophisticated NOBELIUM attack requires a comprehensive incident response to identify, investigate, and respond. The NOBELIUM IOCs associated with this activity are available in CSV on the MSTIC GitHub. These tools have been observed being used in the wild as early as February 2021 attempting to gain a foothold on a variety of sensitive diplomatic and government entities.Īs part of this blog, Microsoft Threat Intelligence Center (MSTIC) is releasing an appendix of indicators of compromise (IOCs) for the community to better investigate and understand NOBELIUM’s most recent operations. In this blog, we highlight four tools representing a unique infection chain utilized by NOBELIUM: EnvyScout, BoomBox, NativeZone, and VaporRage. We continue to monitor this active attack and intend to post additional details as they become available.

5 Comprehensive protections for persistence techniquesĪs we reported in earlier blog posts, the threat actor NOBELIUM recently intensified an email-based attack that it has been operating and evolving since early 2021.

4 VaporRage: CertPKIProvider.dll (malicious downloader).

3 NativeZone: NativeCacheSvc.dll (malicious loader).

2 BoomBox: BOOM.exe (malicious downloader).

1 EnvyScout: NV.html (malicious HTML file).

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