SigmaHQ/rules/windows/process_creation/win_susp_cmd_http_appdata.yml

title: Command Line Execution with Suspicious URL and AppData Strings
id: 1ac8666b-046f-4201-8aba-1951aaec03a3
status: experimental
description: Detects a suspicious command line execution that includes an URL and AppData string in the command line parameters as used by several droppers (js/vbs > powershell)
references:
    - https://www.hybrid-analysis.com/sample/3a1f01206684410dbe8f1900bbeaaa543adfcd07368ba646b499fa5274b9edf6?environmentId=100
    - https://www.hybrid-analysis.com/sample/f16c729aad5c74f19784a24257236a8bbe27f7cdc4a89806031ec7f1bebbd475?environmentId=100
author: Florian Roth
date: 2019/01/16
tags:
    - attack.execution
    - attack.t1059
    - attack.t1059.005
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine:
            - cmd.exe /c *http://*%AppData%
            - cmd.exe /c *https://*%AppData%
    condition: selection
fields:
    - CommandLine
    - ParentCommandLine
falsepositives:
    - High
level: medium
fix: fixed casing and long rule titles 2020-01-30 16:26:09 +00:00			`title: Command Line Execution with Suspicious URL and AppData Strings`
Added UUIDs to rules 2019-11-12 22:12:27 +00:00			`id: 1ac8666b-046f-4201-8aba-1951aaec03a3`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 22:36:31 +00:00			`status: experimental`
Initial round of subtechnique updates 2020-06-16 20:46:08 +00:00			`description: Detects a suspicious command line execution that includes an URL and AppData string in the command line parameters as used by several droppers (js/vbs > powershell)`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 22:36:31 +00:00			`references:`
Increased indentation to 4 * Converted (to generic sigma) rules * Converter outputs by default with indentation 4 2019-03-01 23:14:20 +00:00			`- https://www.hybrid-analysis.com/sample/3a1f01206684410dbe8f1900bbeaaa543adfcd07368ba646b499fa5274b9edf6?environmentId=100`
			`- https://www.hybrid-analysis.com/sample/f16c729aad5c74f19784a24257236a8bbe27f7cdc4a89806031ec7f1bebbd475?environmentId=100`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 22:36:31 +00:00			`author: Florian Roth`
fix: fixed missing date fields in remaining files 2020-01-30 15:07:37 +00:00			`date: 2019/01/16`
Missing tags 2019-03-05 23:16:40 +00:00			`tags:`
			`- attack.execution`
			`- attack.t1059`
Initial round of subtechnique updates 2020-06-16 20:46:08 +00:00			`- attack.t1059.005`
			`- attack.t1059.001`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 22:36:31 +00:00			`logsource:`
Increased indentation to 4 * Converted (to generic sigma) rules * Converter outputs by default with indentation 4 2019-03-01 23:14:20 +00:00			`category: process_creation`
			`product: windows`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 22:36:31 +00:00			`detection:`
Increased indentation to 4 * Converted (to generic sigma) rules * Converter outputs by default with indentation 4 2019-03-01 23:14:20 +00:00			`selection:`
			`CommandLine:`
			`- cmd.exe /c http://%AppData%`
			`- cmd.exe /c https://%AppData%`
			`condition: selection`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 22:36:31 +00:00			`fields:`
Increased indentation to 4 * Converted (to generic sigma) rules * Converter outputs by default with indentation 4 2019-03-01 23:14:20 +00:00			`- CommandLine`
			`- ParentCommandLine`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 22:36:31 +00:00			`falsepositives:`
Increased indentation to 4 * Converted (to generic sigma) rules * Converter outputs by default with indentation 4 2019-03-01 23:14:20 +00:00			`- High`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 22:36:31 +00:00			`level: medium`