Directory Removal Via Rmdir

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About the rule

Rule Type

Standard

Rule Description

Detects execution of the builtin "rmdir" command in order to delete directories. Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.

Severity

Attention

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PROCESSNAME endswith "\cmd.exe" OR ORIGINALFILENAME = "Cmd.Exe") AND COMMANDLINE contains "rmdir" AND COMMANDLINE contains "/s,/q" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

frack113