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Detectionmediumtest

Renamed Microsoft Teams Execution

Detects the execution of a renamed Microsoft Teams binary.

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Launch
Nasreddine Bencherchali (Nextron Systems)Created Fri Jul 1288f46b67-14d4-4f45-ac2c-d66984f22191windows
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:
        OriginalFileName:
            - 'msteams.exe'
            - 'teams.exe'
    filter_main_legit_names:
        Image|endswith:
            - '\msteams.exe'
            - '\teams.exe'
    condition: selection and not 1 of filter_main_*
False Positives
Unknown

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

References
1
Resolving title…
Internal Research
MITRE ATT&CK
Rule Metadata
Rule ID
88f46b67-14d4-4f45-ac2c-d66984f22191
Status
test
Level
medium
Type
Detection
Created
Fri Jul 12
Author
Nasreddine Bencherchali (Nextron Systems)
Path
rules/windows/process_creation/proc_creation_win_renamed_msteams.yml
Raw Tags
attack.defense-evasion
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