S1165: FrostyGoop
FrostyGoop is a Windows-based binary written in Golang that allows for interaction with industrial control system (ICS) equipment via Modbus TCP over port 502. FrostyGoop allows for reading and writing data to holding registers on targeted devices, manipulating the operation of systems for malicious purposes. FrostyGoop is associated with the FrostyGoop Incident in Ukraine.[1][2]
Security context for executives and security teams
S1165: FrostyGoop describes [FrostyGoop](https://attack.mitre.org/software/S1165) is a Windows-based binary written in Golang that allows for interaction with industrial control system (ICS) equipment via Modbus TCP over port 502. [FrostyGoop](https://attack.mitre.org/software/S1165) allows for reading and writing data to holding registers on targeted devices, manipulating the operation of systems for malicious purposes. [FrostyGoop](https://attack.mitre.org/software/S1165) is associated with the [FrostyGoop Incident](https://attack.mitre.org...
Executive priority
S1165: FrostyGoop 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 S1165: FrostyGoop by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (Control Server, Field Controller/RTU/PLC/IED), and available local telemetry before making detection or mitigation decisions.
Likely telemetry
- Official ATT&CK relationships and object metadata
Detection direction
- Validate whether S1165: FrostyGoop 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.
FrostyGoop
FrostyGoop is a Windows-based binary written in Golang that allows for interaction with industrial control system (ICS) equipment via Modbus TCP over port 502. FrostyGoop allows for reading and writing data to holding registers on targeted devices, manipulating the operation of systems for malicious purposes. FrostyGoop is associated with the FrostyGoop Incident in Ukraine.[1][2]
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 |
|---|---|---|---|
| ICS | T0836 | Modify Parameter | FrostyGoop allows for the modification of system settings by reading and writing to registers via Modbus commands.[1][2] |
| ICS | T0801 | Monitor Process State | FrostyGoop can read data from holding registers via Modbus communication.[1] |
| ICS | T0869 | Standard Application Layer Protocol | FrostyGoop utilizes the Modbus protocol for transmitting commands to victim devices.[1] |
| ICS | T1701 | Command and Scripting Interpreter | FrostyGoop is compiled for Windows systems and leverages a Windows-based command line interface.[1] Modbus interaction functionality is based off a publicly available Github repository for command line input.[2] |
| ICS | T0885 | Commonly Used Port | FrostyGoop communicates using the Modbus protocol over the standard port of TCP 502.[1] |
Groups, software, and campaigns
C0041: FrostyGoop Incident
FrostyGoop Incident took place in January 2024 against a municipal district heating company in Ukraine. Following initial access via likely exploitation of external facing services, FrostyGoop was used to manipulate ENCO control systems via legitimate Modbus commands to impact the delivery of heating services to Ukrainian civilians.[1][2]
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 | 02ae2d9672ec… | ||
| 19.2 | 1.0 | Older bundle | 02ae2d9672ec… | ||
| 19.1 | 1.0 | Older bundle | 02ae2d9672ec… |
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]Dragos FROSTYGOOP 2024
Mark Graham, Carolyn Ahlers, Kyle O'Meara; Dragos. (2024, July). Impact of FrostyGoop ICS Malware on Connected OT Systems. Retrieved November 20, 2024.
Open source URL - [2]Nozomi BUSTLEBERM 2024
Nozomi Networks Labs. (2024, July 24). Cyberwarfare Targeting OT: Protecting Against FrostyGoop/BUSTLEBERM Malware. Retrieved November 20, 2024.
Open source URL - [3]BUSTLEBERM
(Citation: Nozomi BUSTLEBERM 2024)
- [4]mitre-attackS1165Open source URL
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