S1232: SplatDropper
SplatDropper is a loader that utilizes native windows API to deliver its payload to the victim environment. SplatDropper has been delivered through RAR archives and used legitimate executable for DLL side-loading. SplatDropper is known to be leveraged by Mustang Panda and was first observed utilized in 2025.
Security context for executives and security teams
S1232: SplatDropper describes [SplatDropper](https://attack.mitre.org/software/S1232) is a loader that utilizes native windows API to deliver its payload to the victim environment. [SplatDropper](https://attack.mitre.org/software/S1232) has been delivered through RAR archives and used legitimate executable for DLL side-loading. [SplatDropper](https://attack.mitre.org/software/S1232) is known to be leveraged by [Mustang Panda](https://attack.mitre.org/groups/G0129) and was first observed utilized in 2025.
Executive priority
S1232: SplatDropper 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 S1232: SplatDropper 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 S1232: SplatDropper 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.
SplatDropper
SplatDropper is a loader that utilizes native windows API to deliver its payload to the victim environment. SplatDropper has been delivered through RAR archives and used legitimate executable for DLL side-loading. SplatDropper is known to be leveraged by Mustang Panda and was first observed utilized in 2025.
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 | T1106 | Native API | SplatDropper has utilized hashed Native Windows API calls.CitationZscaler PAKLOG CorkLog SplatCloak Splatdropper April 2025 |
| Enterprise | T1574.001 | DLLSub-technique | SplatDropper has leveraged legitimate binaries to conduct DLL side-loading.CitationZscaler PAKLOG CorkLog SplatCloak Splatdropper April 2025 |
| Enterprise | T1027.007 | Dynamic API ResolutionSub-technique | SplatDropper has leveraged hashed Windows API calls using a seed value of "131313".CitationZscaler PAKLOG CorkLog SplatCloak Splatdropper April 2025 |
| Enterprise | T1027.013 | Encrypted/Encoded FileSub-technique | SplatDropper has also utilized XOR encrypted payload.CitationZscaler PAKLOG CorkLog SplatCloak Splatdropper April 2025 |
| Enterprise | T1553.002 | Code SigningSub-technique | SplatDropper has used legitimate signed binaries such as BugSplatHD64.exe for follow-on execution of malicious DLLs through DLL side-loading.CitationZscaler PAKLOG CorkLog SplatCloak Splatdropper April 2025 |
| Enterprise | T1140 | Deobfuscate/Decode Files or Information | SplatDropper has decoded XOR encrypted payload.CitationZscaler PAKLOG CorkLog SplatCloak Splatdropper April 2025 |
| Enterprise | T1070.009 | Clear PersistenceSub-technique | SplatDropper has deleted its malicious payload and removed its own created service to avoid leaving traces of its presence on victim devices.CitationZscaler PAKLOG CorkLog SplatCloak Splatdropper April 2025 |
| Enterprise | T1543.003 | Windows ServiceSub-technique | SplatDropper has created a service to execute a payload.CitationZscaler PAKLOG CorkLog SplatCloak Splatdropper April 2025 |
Groups, software, and campaigns
G0129: Mustang Panda
Mustang Panda is a China-based cyber espionage threat actor that has been conducting operations since at least 2012. Mustang Panda has been known to use tailored phishing lures and decoy documents to deliver malicious payloads. Mustang Panda has targeted government, diplomatic, and non-governmental organizations, including think tanks, religious institutions, and research entities, across the United States, Europe, and Asia, with notable activity in Russia, Mongolia, Myanmar, Pakistan, and Vietnam. [1][2][3][4][5][6][7][8][9][10][11][12][13]
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(3)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 20.0 | 1.0 | Current bundle | 2e84ca1491dd… | ||
| 19.2 | 1.0 | Older bundle | 2e84ca1491dd… | ||
| 19.1 | 1.0 | Older bundle | 2e84ca1491dd… |
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]mitre-attackS1232Open source URL
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