Detectionmediumtest
Potential Arbitrary File Download Via Cmdl32.EXE
Detects execution of Cmdl32 with the "/vpn" and "/lan" flags. Attackers can abuse this utility in order to download arbitrary files via a configuration file. Inspect the location and the content of the file passed as an argument in order to determine if it is suspicious.
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Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic2 selectors
detection:
selection_img:
- Image|endswith: '\cmdl32.exe'
- OriginalFileName: CMDL32.EXE
selection_cli:
CommandLine|contains|all:
- '/vpn'
- '/lan'
condition: all of selection_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Rule Metadata
Rule ID
f37aba28-a9e6-4045-882c-d5004043b337
Status
test
Level
medium
Type
Detection
Created
Wed Nov 03
Modified
Mon Apr 22
Author
Path
rules/windows/process_creation/proc_creation_win_cmdl32_arbitrary_file_download.yml
Raw Tags
attack.executionattack.defense-evasionattack.t1218attack.t1202