FELIXROOT
Associated Software Descriptions
| Name | Description |
|---|---|
| GreyEnergy mini | [2] |
Techniques Used
| Domain | ID | Name | Use |
|---|---|---|---|
| Enterprise | T1059 | Command-Line Interface |
FELIXROOT opens a remote shell to execute commands on the infected system.[1][2] |
| Enterprise | T1043 | Commonly Used Port |
FELIXROOT uses Port Numbers 443, 8443, and 8080 for C2 communications.[1][2] |
| Enterprise | T1022 | Data Encrypted |
FELIXROOT encrypts collected data with AES and Base64 and then sends it to the C2 server.[1] |
| Enterprise | T1107 | File Deletion |
FELIXROOT deletes the .LNK file from the startup directory as well as the dropper components.[1] |
| Enterprise | T1112 | Modify Registry |
FELIXROOT deletes the Registry key |
| Enterprise | T1027 | Obfuscated Files or Information |
FELIXROOT encrypts strings in the backdoor using a custom XOR algorithm.[1][2] |
| Enterprise | T1057 | Process Discovery | |
| Enterprise | T1012 | Query Registry |
FELIXROOT queries the Registry for specific keys for potential privilege escalation and proxy information. FELIXROOT has also used WMI to query the Windows Registry.[1][2] |
| Enterprise | T1060 | Registry Run Keys / Startup Folder |
FELIXROOT adds a shortcut file to the startup folder for persistence.[2] |
| Enterprise | T1105 | Remote File Copy |
FELIXROOT downloads and uploads files to and from the victim’s machine.[1][2] |
| Enterprise | T1085 | Rundll32 |
FELIXROOT uses Rundll32 for executing the dropper program.[1][2] |
| Enterprise | T1064 | Scripting |
FELIXROOT executes batch scripts on the victim’s machine.[1] |
| Enterprise | T1063 | Security Software Discovery |
FELIXROOT checks for installed security software like antivirus and firewall.[2] |
| Enterprise | T1023 | Shortcut Modification | |
| Enterprise | T1071 | Standard Application Layer Protocol |
FELIXROOT uses HTTP and HTTPS to communicate with the C2 server.[1][2] |
| Enterprise | T1082 | System Information Discovery |
FELIXROOT collects the victim’s computer name, processor architecture, OS version, volume serial number, and system type.[1][2] |
| Enterprise | T1016 | System Network Configuration Discovery |
FELIXROOT collects information about the network including the IP address and DHCP server.[2] |
| Enterprise | T1033 | System Owner/User Discovery |
FELIXROOT collects the username from the victim’s machine.[1][2] |
| Enterprise | T1124 | System Time Discovery |
FELIXROOT gathers the time zone information from the victim’s machine.[2] |
| Enterprise | T1047 | Windows Management Instrumentation |