MechaFlounder
MechaFlounder is a python-based remote access tool (RAT) that has been used by APT39. The payload uses a combination of actor developed code and code snippets freely available online in development communities.[1]
Techniques Used
| Domain | ID | Name | Use | |
|---|---|---|---|---|
| Enterprise | T1071 | .001 | Application Layer Protocol: Web Protocols |
MechaFlounder has the ability to use HTTP in communication with C2.[1] |
| Enterprise | T1059 | .003 | Command and Scripting Interpreter: Windows Command Shell |
MechaFlounder has the ability to run commands on a compromised host.[1] |
| .006 | Command and Scripting Interpreter: Python |
MechaFlounder uses a python-based payload.[1] |
||
| Enterprise | T1132 | .001 | Data Encoding: Standard Encoding |
MechaFlounder has the ability to use base16 encoded strings in C2.[1] |
| Enterprise | T1041 | Exfiltration Over C2 Channel |
MechaFlounder has the ability to send the compromised user's account name and hostname within a URL to C2.[1] |
|
| Enterprise | T1105 | Ingress Tool Transfer |
MechaFlounder has the ability to upload and download files to and from a compromised host.[1] |
|
| Enterprise | T1036 | .005 | Masquerading: Match Legitimate Name or Location |
MechaFlounder has been downloaded as a file named lsass.exe, which matches the legitimate Windows file.[1] |
| Enterprise | T1033 | System Owner/User Discovery |
MechaFlounder has the ability to identify the username and hostname on a compromised host.[1] |
|