S0082: Emissary
Emissary is a Trojan that has been used by Lotus Blossom. It shares code with Elise, with both Trojans being part of a malware group referred to as LStudio.[1]
Security context for executives and security teams
S0082: Emissary describes [Emissary](https://attack.mitre.org/software/S0082) is a Trojan that has been used by [Lotus Blossom](https://attack.mitre.org/groups/G0030). It shares code with [Elise](https://attack.mitre.org/software/S0081), with both Trojans being part of a malware group referred to as LStudio.(Citation: Lotus Blossom Dec 2015)
Executive priority
S0082: Emissary is an official MITRE ATT&CK software. Glexia treats it as defensive behavior context for prioritizing monitoring, control validation, and response planning without using the object by itself as an attribution claim.
Technical view
Security teams should validate S0082: Emissary by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (Windows), and available local telemetry before making detection or mitigation decisions.
Likely telemetry
- Official ATT&CK relationships and object metadata
- Network, endpoint, and security-tool telemetry
Detection direction
- Validate whether S0082: Emissary appears in your detection coverage and tabletop scenarios.
- Use the object to align executive risk language with SOC, incident response, and detection engineering work.
- Do not treat ATT&CK relationship context as attribution without corroborating evidence.
Mitigation priorities
- Map the object to existing controls and identify missing telemetry or response ownership.
- Prioritize mitigations that reduce exposure on the listed platforms and tactics.
- Review adjacent ATT&CK relationships before changing policy, detections, or reporting language.
Additional notes and limits
Baseline Glexia take generated from the official MITRE ATT&CK STIX object, source hash, tactics, platforms, and detection fields. It is safe to replace with a richer model-generated take for the same source hash later.
This baseline take is source-grounded and schema-validated, but it does not include environment-specific telemetry, incident evidence, or threat-intelligence corroboration.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Emissary
Emissary is a Trojan that has been used by Lotus Blossom. It shares code with Elise, with both Trojans being part of a malware group referred to as LStudio.[1]
How security teams should use this page
Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.
Techniques used
This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.
| Domain | ID | Name | Relationship / procedure |
|---|---|---|---|
| Enterprise | T1547.001 | Registry Run Keys / Startup FolderSub-technique | Variants of Emissary have added Run Registry keys to establish persistence.CitationEmissary Trojan Feb 2016 |
| Enterprise | T1027.013 | Encrypted/Encoded FileSub-technique | |
| Enterprise | T1055.001 | Dynamic-link Library InjectionSub-technique | |
| Enterprise | T1218.011 | Rundll32Sub-technique | Variants of Emissary have used rundll32.exe in Registry values added to establish persistence.CitationEmissary Trojan Feb 2016 |
| Enterprise | T1016 | System Network Configuration Discovery | Emissary has the capability to execute the command |
| Enterprise | T1059.003 | Windows Command ShellSub-technique | |
| Enterprise | T1082 | System Information Discovery | Emissary has the capability to execute ver and systeminfo commands.CitationEmissary Trojan Feb 2016 |
| Enterprise | T1573.001 | Symmetric CryptographySub-technique | |
| Enterprise | T1071.001 | Web ProtocolsSub-technique | |
| Enterprise | T1105 | Ingress Tool Transfer | |
| Enterprise | T1615 | Group Policy Discovery | Emissary has the capability to execute |
| Enterprise | T1069.001 | Local GroupsSub-technique | Emissary has the capability to execute the command |
| Enterprise | T1007 | System Service Discovery | Emissary has the capability to execute the command |
| Enterprise | T1027.001 | Binary PaddingSub-technique | A variant of Emissary appends junk data to the end of its DLL file to create a large file that may exceed the maximum size that anti-virus programs can scan.CitationEmissary Trojan Feb 2016 |
| Enterprise | T1543.003 | Windows ServiceSub-technique | Emissary is capable of configuring itself as a service.CitationEmissary Trojan Feb 2016 |
Groups, software, and campaigns
G0030: Lotus Blossom
Lotus Blossom is a long-standing threat group largely targeting various entities in Asia since at least 2009. In addition to government and related targets, Lotus Blossom has also targeted entities such as digital certificate issuers.[1][2][3]
All related ATT&CK context
Object version and sync metadata
The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates.
Imported snapshots across ATT&CK releases(2)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.2 | 1.3 | Current bundle | 2e3b46d583f9… | ||
| 19.1 | 1.3 | Older bundle | 2e3b46d583f9… |
Mirrored ATT&CK source object
The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
- [1]Lotus Blossom Dec 2015
Falcone, R. and Miller-Osborn, J.. (2015, December 18). Attack on French Diplomat Linked to Operation Lotus Blossom. Retrieved February 15, 2016.
- [2]Emissary
(Citation: Lotus Blossom Dec 2015)
- [3]mitre-attackS0082Open source URL
Source: MITRE ATT&CK®. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation. Glexia is not affiliated with or endorsed by MITRE.