Threat Actor

Blue Mockingbird

Also known as: Blue Mockingbird

Blue Mockingbird is a cluster of observed activity involving Monero cryptocurrency-mining payloads in dynamic-link library (DLL) form on Windows systems. The earliest observed Blue Mockingbird tools were created in December 2019.

22
Techniques
2
Software
0
indicators on this record

Properties

Last source
MITRE ATT&CK
STIX ID
intrusion-set--73a80fab-2aa3-48e0-a4d0-3a4828200aee
In Signal since
initial import (Sep 2026)
Retrieved at
2026-11-02T16:56:30+00:00
Type
intrusion-set

MITRE ATT&CK Techniques (22)

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Access Token Manipulation (T1134)

Adversaries may modify access tokens to operate under a different user or system security context to perform actions and bypass access controls. Windo

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COR_PROFILER (T1574.012)

Adversaries may leverage the COR_PROFILER environment variable to hijack the execution flow of programs that load the.NET CLR. The COR_PROFILER is a

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Compute Hijacking (T1496.001)

Adversaries may leverage the compute resources of co-opted systems to complete resource-intensive tasks, which may impact system and/or hosted service

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Encrypted/Encoded File (T1027.013)

Adversaries may encrypt or encode files to obfuscate strings, bytes, and other specific patterns to impede detection. Encrypting and/or encoding file

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Exploit Public-Facing Application (T1190)

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network. The weakness in the system can be a

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LSASS Memory (T1003.001)

Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS). After a

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Match Legitimate Resource Name or Location (T1036.005)

Adversaries may match or approximate the name or location of legitimate files, Registry keys, or other resources when naming/placing them. This is don

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Modify Registry (T1112)

Adversaries may interact with the Windows Registry as part of a variety of other techniques to aid in defense evasion, persistence, and execution. Ac

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PowerShell (T1059.001)

Adversaries may abuse PowerShell commands and scripts for execution. PowerShell is a powerful interactive command-line interface and scripting environ

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Proxy (T1090)

Adversaries may use a connection proxy to direct network traffic between systems or act as an intermediary for network communications to a command and

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Regsvr32 (T1218.010)

Adversaries may abuse Regsvr32.exe to proxy execution of malicious code. Regsvr32.exe is a command-line program used to register and unregister object

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Remote Desktop Protocol (T1021.001)

Adversaries may use Valid Accounts to log into a computer using the Remote Desktop Protocol (RDP). The ad

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Rundll32 (T1218.011)

Adversaries may abuse rundll32.exe to proxy execution of malicious code. Using rundll32.exe, vice executing directly (i.e. [Shared Modules](https://at

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SMB/Windows Admin Shares (T1021.002)

Adversaries may use Valid Accounts to interact with a remote network share using Server Message Block (SM

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Scheduled Task (T1053.005)

Adversaries may abuse the Windows Task Scheduler to perform task scheduling for initial or recurring execution of malicious code. There are multiple w

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Service Execution (T1569.002)

Adversaries may abuse the Windows service control manager to execute malicious commands or payloads. The Windows service control manager (servic

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System Information Discovery (T1082)

An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and

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Tool (T1588.002)

Adversaries may buy, steal, or download software tools that can be used during targeting. Tools can be open or closed source, free or commercial. A to

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Windows Command Shell (T1059.003)

Adversaries may abuse the Windows command shell for execution. The Windows command shell (cmd) is the prima

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Windows Management Instrumentation (T1047)

Adversaries may abuse Windows Management Instrumentation (WMI) to execute malicious commands and payloads. WMI is designed for programmers and is the

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Windows Management Instrumentation Event Subscription (T1546.003)

Adversaries may establish persistence and elevate privileges by executing malicious content triggered by a Windows Management Instrumentation (WMI) ev

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Windows Service (T1543.003)

Adversaries may create or modify Windows services to repeatedly execute malicious payloads as part of persistence. When Windows boots up, it starts pr

Software & Tools (2)

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FRP [tool]

FRP, which stands for Fast Reverse Proxy, is an openly available tool that is capable of exposing a server

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MimiKatz [malware]

Mimikatz is a credential dumper capable of obtaining plaintext Windows account logins and passwords, along

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