HighSigmaHQ Florian Roth (Nextron Systems)

Cmd.EXE Missing Space Characters Execution Anomaly

Detects Windows command lines that miss a space before or after the /c flag when running a command using the cmd.exe. This could be a sign of obfuscation of a fat finger problem (typo by the developer).

Detection logic

Detection requirements

Platform: Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: windows
Log source category: process_creation

Known benign triggers

Legitimate use of cmd.exe with no arguments e.g. via system("") in C to enable ANSI escape codes

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
ss64.com/nt/cmd.html	Unclassified	Only this detection cites it
twitter.com/cyb3rops/status/1562072617552678912	Social post	Only this detection cites it

Detection rules

Cmd.EXE Missing Space Characters Execution Anomaly

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules