S1179: Exbyte
Security context for executives and security teams
S1179: Exbyte describes [Exbyte](https://attack.mitre.org/software/S1179) is an exfiltration tool written in Go that is uniquely associated with [BlackByte](https://attack.mitre.org/groups/G1043) operations. Observed since 2022, [Exbyte](https://attack.mitre.org/software/S1179) transfers collected files to online file sharing and hosting services.(Citation: Symantec BlackByte 2022)
Executive priority
S1179: Exbyte 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 S1179: Exbyte 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 S1179: Exbyte 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.
Exbyte
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 | Exbyte calls `ShellExecuteW` with the `IpOperation` parameter `RunAs` to launch `explorer.exe` with elevated privileges.CitationMicrosoft BlackByte 2023 |
| Enterprise | T1480 | Execution Guardrails | Exbyte checks for the presence of a configuration file before completing execution.CitationMicrosoft BlackByte 2023 |
| Enterprise | T1069.001 | Local GroupsSub-technique | Exbyte checks whether the process is running with privileged local access during execution.CitationMicrosoft BlackByte 2023 |
| Enterprise | T1140 | Deobfuscate/Decode Files or Information | Exbyte decodes and decrypts data stored in the configuration file with a key provided on the command line during execution.CitationMicrosoft BlackByte 2023 |
| Enterprise | T1083 | File and Directory Discovery | |
| Enterprise | T1518.001 | Security Software DiscoverySub-technique | |
| Enterprise | T1070.004 | File DeletionSub-technique | Exbyte will self-delete if a hard-coded configuration file is not found.CitationMicrosoft BlackByte 2023 |
| Enterprise | T1497.001 | System ChecksSub-technique | |
| Enterprise | T1567 | Exfiltration Over Web Service |
Groups, software, and campaigns
G1043: BlackByte
BlackByte is a ransomware threat actor operating since at least 2021. BlackByte is associated with several versions of ransomware also labeled BlackByte Ransomware. BlackByte ransomware operations initially used a common encryption key allowing for the development of a universal decryptor, but subsequent versions such as BlackByte 2.0 Ransomware use more robust encryption mechanisms. BlackByte is notable for operations targeting critical infrastructure entities among other targets across North America.[1][2][3][4][5]
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 | 1.0 | Current bundle | 0de86a4d0a02… | ||
| 19.1 | 1.0 | Older bundle | 0de86a4d0a02… |
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]Symantec BlackByte 2022
Symantec Threat Hunter Team. (2022, October 21). Exbyte: BlackByte Ransomware Attackers Deploy New Exfiltration Tool. Retrieved December 16, 2024.
Open source URL - [2]mitre-attackS1179Open 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.