Lateral Tool Transfer
Where this stands
No Sigma rule can address this — the telemetry MITRE names has no Sigma logsource behind it.
Sigma has no logsource taxonomy for ICS. MITRE's telemetry here is operational historians and controller state, which no Sigma rule can address.
What the technique is
Adversaries may transfer tools or other files from one system to another to stage adversary tools or other files over the course of an operation. Copying of files may also be performed laterally between internal victim systems to support Lateral Movement with remote Execution using inherent file sharing protocols such as file sharing over SMB to connected network shares. In control systems environments, malware may use SMB and other file sharing protocols to move laterally through industrial networks.
Read it on attack.mitre.orgWhat MITRE says you would watch
- AN1878
Monitor for unexpected network share access, such as files transferred between shares within a network using protocols such as Server Message Block (SMB). Monitor for alike file hashes or characteristics (ex: filename) that are created on multiple hosts. Monitor for file creation in conjunction with other techniques (e.g., file transfers using Remote Services). Monitor for unusual processes with internal network connections creating files on-system which may be suspicious. Monitor executed commands and arguments for abnormal usage of utilities and command-line arguments that may be used in support of remote transfer of files. […]
Technique names and descriptions © MITRE ATT&CK®, CC BY 4.0. Not endorsed by MITRE.