Detection rules › Sigma
Potential Arbitrary Command Execution Via FTP.EXE
Detects execution of "ftp.exe" script with the "-s" or "/s" flag and any child processes ran by "ftp.exe".
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | |
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: Potential Arbitrary Command Execution Via FTP.EXE
id: 06b401f4-107c-4ff9-947f-9ec1e7649f1e
status: test
description: Detects execution of "ftp.exe" script with the "-s" or "/s" flag and any child processes ran by "ftp.exe".
references:
- https://lolbas-project.github.io/lolbas/Binaries/Ftp/
author: Victor Sergeev, oscd.community
date: 2020-10-09
modified: 2024-04-23
tags:
- attack.execution
- attack.stealth
- attack.t1059
- attack.t1202
logsource:
category: process_creation
product: windows
detection:
selection_parent:
ParentImage|endswith: '\ftp.exe'
selection_child_img:
- Image|endswith: '\ftp.exe'
- OriginalFileName: 'ftp.exe'
selection_child_cli:
CommandLine|contains|windash: '-s:'
condition: selection_parent or all of selection_child_*
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
selection_parent or all of selection_child_*Stage 1: selection_parent
selection_parent:
ParentImage|endswith: '\ftp.exe'
Stage 2: selection_child_img
selection_child_img:
- Image|endswith: '\ftp.exe'
- OriginalFileName: 'ftp.exe'
Stage 3: selection_child_cli
selection_child_cli:
CommandLine|contains|windash: '-s:'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match value:"-s:" |
Image | ends_with |
| field:"Image" kind:ends_with value:"\ftp.exe" |
OriginalFileName | eq |
| field:"OriginalFileName" kind:eq value:"ftp.exe" |
ParentImage | ends_with |
| field:"ParentImage" kind:ends_with value:"\ftp.exe" |