Detection rules › Sigma

Php Inline Command Execution

Severity
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects execution of php using the "-r" flag. This is could be used as a way to launch a reverse shell or execute live php code.

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1059 Command and Scripting Interpreter

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: all of selection_img

or:
Image|endswith: '\php.exe'
OriginalFileName: php.exe

Stage 2: all of selection_cli

CommandLine|contains: ' -r'

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.

FieldKindValues
CommandLinematch
  • -r corpus 2 (sigma 2)
Imageends_with
  • \php.exe
OriginalFileNameeq
  • php.exe