Techniques › T1505.003 › AN1108
AN1108 Analytic 1108
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Unexpected file creation in web directories followed by web server processes (e.g., w3wp.exe) spawning command shells or script interpreters (e.g., cmd.exe, powershell.exe)</p>
- Detects
- T1505.003 Web Shell
- Part of
- DET0394 Web Shell Detection via Server Behavior and File Execution Chains
Log sources and channels
Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.
| Log source | Channel | Data component |
|---|---|---|
| WinEventLog:Sysmon | EventCode=11 | DC0039 File Creation |
| WinEventLog:Sysmon | EventCode=1 | DC0032 Process Creation |
| WinEventLog:Security | EventCode=4624, 4648 | DC0067 Logon Session Creation |
| NSM:Flow | Inbound HTTP POST with suspicious payload size or user-agent | DC0085 Network Traffic Content |
Mutable elements
Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.
| Field | Description |
|---|---|
WebRootPath | Custom web server directory depending on IIS or third-party hosting environment |
ParentProcess | Different server binaries (e.g., php-cgi.exe, apache.exe) that may launch scripts |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2019-0604 | Microsoft SharePoint | Mapped |
| CVE-2019-18935 | Progress Telerik UI for ASP.NET AJAX | Mapped |
| CVE-2020-0688 | Microsoft Exchange Server | Mapped |
| CVE-2021-26855 | Microsoft Exchange Server | Mapped |
| CVE-2021-26857 | Microsoft Exchange Server | Mapped |
| CVE-2021-26858 | Microsoft Exchange Server | Mapped |
| CVE-2021-27065 | Microsoft Exchange Server | Mapped |
| CVE-2021-27860 | FatPipe WARP, IPVPN, and MPVPN software | Mapped |
| CVE-2021-40539 | Zoho ManageEngine | Mapped |
| CVE-2021-44077 | Zoho ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus | Mapped |
| CVE-2021-44228 | Apache Log4j2 | Mapped |
| CVE-2022-22954 | VMware Workspace ONE Access and Identity Manager | Mapped |
| CVE-2022-22963 | VMware Tanzu Spring Cloud | Mapped |
| CVE-2022-41082 | Microsoft Exchange Server | Mapped |
| CVE-2023-20118 | Cisco Small Business RV Series Routers | Mapped |
| CVE-2023-22952 | SugarCRM Multiple Products | Stale |
| CVE-2023-26360 | Adobe ColdFusion | Mapped |
| CVE-2023-32315 | Ignite Realtime Openfire | Mapped |
| CVE-2023-46805 | Ivanti Connect Secure and Policy Secure | Mapped |
| CVE-2024-21887 | Ivanti Connect Secure and Policy Secure | Mapped |
| CVE-2024-21893 | Ivanti Connect Secure, Policy Secure, and Neurons | Mapped |
| CVE-2025-31324 | SAP NetWeaver | Mapped |
| CVE-2025-35939 | Craft CMS Craft CMS | Mapped |
| CVE-2025-3928 | Commvault Web Server | Mapped |
| CVE-2025-42999 | SAP NetWeaver | Mapped |
| CVE-2025-4427 | Ivanti Endpoint Manager Mobile (EPMM) | Mapped |