Suspicious Single-Character Named Executable Launched by Web Server Process (via process_creation)

ATT&CK techniques

Initial Access → Persistence

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
- T1505.003Web Shell
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a single-character named executable being spawned by a SAP or web server process. During exploitation of CVE-2025-31324 the web shell writes and runs tools under terse single-character names to evade casual inspection, so this naming pattern under a server parent indicates malicious post-exploitation execution.

Reporting behind it

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Suspicious Single-Character Named Executable Launched by Web Server Process (via process_creation)

Pivot detection · T1190 · 9 related

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