Use Of The SFTP.EXE Binary As A LOLBIN

Severity: medium
Author: Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects the usage of the "sftp.exe" binary as a LOLBIN by abusing the "-D" flag

MITRE ATT&CK coverage

Tactic	Techniques
Defense Evasion	`T1218` System Binary Proxy Execution

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation
Security-Auditing	4688	A new process has been created.

Stages and Predicates

Stage 1: `selection`

or:
CommandLine|contains: ' -D ..'
CommandLine|contains: ' -D C:\'
Image|endswith: '\sftp.exe'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.