mirror of
https://github.com/LOLBAS-Project/LOLBAS
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48 lines
2.0 KiB
YAML
48 lines
2.0 KiB
YAML
---
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Name: Teams.exe
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Description: Electron runtime binary which runs the Teams application
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Author: Andrew Kisliakov
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Created: 2022-01-17
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Commands:
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- Command: teams.exe
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Description: Generate JavaScript payload and package.json, and save to "%LOCALAPPDATA%\\Microsoft\\Teams\\current\\app\\" before executing.
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Usecase: Execute JavaScript code
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Category: Execute
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Privileges: User
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MitreID: T1218.015
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OperatingSystem: Windows 10, Windows 11
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Tags:
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- Execute: Javascript
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- Command: teams.exe
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Description: Generate JavaScript payload and package.json, archive in ASAR file and save to "%LOCALAPPDATA%\\Microsoft\\Teams\\current\\app.asar" before executing.
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Usecase: Execute JavaScript code
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Category: Execute
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Privileges: User
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MitreID: T1218.015
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OperatingSystem: Windows 10, Windows 11
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Tags:
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- Execute: Javascript
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- Command: teams.exe --disable-gpu-sandbox --gpu-launcher="C:\Windows\system32\cmd.exe /c ping google.com &&"
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Description: Teams spawns cmd.exe as a child process of teams.exe and executes the ping command
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Usecase: Executes a process under a trusted Microsoft signed binary
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Category: Execute
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Privileges: User
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MitreID: T1218.015
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OperatingSystem: Windows 10, Windows 11
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Tags:
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- Execute: CMD
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Full_Path:
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- Path: 'C:\Users\<username>\AppData\Local\Microsoft\Teams\current\Teams.exe'
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Code_Sample:
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- Code: https://github.com/lltltk/LOLBAS-research/tree/master/Teams
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Detection:
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- IOC: "%LOCALAPPDATA%\\Microsoft\\Teams\\current\\app directory created"
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- IOC: "%LOCALAPPDATA%\\Microsoft\\Teams\\current\\app.asar file created/modified by non-Teams installer/updater"
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- Sigma: https://github.com/SigmaHQ/sigma/blob/43277f26fc1c81fc98fc79147b711189e901b757/rules/windows/process_creation/proc_creation_win_susp_electron_exeuction_proxy.yml
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Resources:
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- Link: https://l--k.uk/2022/01/16/microsoft-teams-and-other-electron-apps-as-lolbins/
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Acknowledgement:
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- Person: Andrew Kisliakov
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- Person: mr.d0x
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Handle: '@mrd0x'
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