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Detectionmediumtest

Uncommon Child Process Of Conhost.EXE

Detects uncommon "conhost" child processes. This could be a sign of "conhost" usage as a LOLBIN or potential process injection activity.

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Launch
omkar72Created Sun Oct 25Updated Mon Dec 117dc2dedd-7603-461a-bc13-15803d132355windows
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 Logic5 selectors
detection:
    selection:
        ParentImage|endswith: '\conhost.exe'
    filter_main_conhost:
        Image|endswith: ':\Windows\System32\conhost.exe'
    filter_main_null:
        Image: null
    filter_main_empty:
        Image: ''
    filter_optional_provider:
        Provider_Name: 'SystemTraceProvider-Process'  # Race condition with SystemTrace doesn't provide all fields.
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References
1
Resolving title…
hexacorn.com
MITRE ATT&CK
Related Rules
SimilarDetectionhigh

Potentially Suspicious Child Processes Spawned by ConHost

Detects suspicious child processes related to Windows Shell utilities spawned by `conhost.exe`, which could indicate malicious activity using trusted system components.

Detects similar activity. Both rules may fire on overlapping events.

Rule Metadata
Rule ID
7dc2dedd-7603-461a-bc13-15803d132355
Status
test
Level
medium
Type
Detection
Created
Sun Oct 25
Modified
Mon Dec 11
Author
omkar72
Path
rules/windows/process_creation/proc_creation_win_conhost_susp_child_process.yml
Raw Tags
attack.defense-evasionattack.t1202
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