T1070.005
Indicator Removal on Host: Network Share Connection Removal
Description from ATT&CK
Adversaries may remove share connections that are no longer useful in order to clean up traces of their operation. Windows shared drive and SMB/Windows Admin Shares connections can be removed when no longer needed. Net is an example utility that can be used to remove network share connections with the net use \system\share /delete command. (Citation: Technet Net Use)
Atomic Tests
Atomic Test #1 - Add Network Share
Add a Network Share utilizing the command_prompt
Supported Platforms: windows
auto_generated_guid: 14c38f32-6509-46d8-ab43-d53e32d2b131
Inputs:
Name | Description | Type | Default Value |
---|---|---|---|
share_name | Share to add. | string | \test\share |
Attack Commands: Run with command_prompt!
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net use c: #{share_name}
net share test=#{share_name} /REMARK:"test share" /CACHE:No
Atomic Test #2 - Remove Network Share
Removes a Network Share utilizing the command_prompt
Supported Platforms: windows
auto_generated_guid: 09210ad5-1ef2-4077-9ad3-7351e13e9222
Inputs:
Name | Description | Type | Default Value |
---|---|---|---|
share_name | Share to remove. | string | \test\share |
Attack Commands: Run with command_prompt!
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net share #{share_name} /delete
Atomic Test #3 - Remove Network Share PowerShell
Removes a Network Share utilizing PowerShell
Supported Platforms: windows
auto_generated_guid: 0512d214-9512-4d22-bde7-f37e058259b3
Inputs:
Name | Description | Type | Default Value |
---|---|---|---|
share_name | Share to remove. | string | \test\share |
Attack Commands: Run with powershell!
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Remove-SmbShare -Name #{share_name}
Remove-FileShare -Name #{share_name}
Atomic Test #4 - Disable Administrative Share Creation at Startup
Administrative shares are hidden network shares created by Microsoft’s Windows NT operating systems that grant system administrators remote access to every disk volume on a network-connected system. These shares are automatically created at started unless they have been purposefully disabled as is done in this Atomic test. As Microsoft puts it, "Missing administrative shares typically indicate that the computer in question has been compromised by malicious software." https://threatpost.com/conti-ransomware-gang-has-full-log4shell-attack-chain/177173/
Supported Platforms: windows
auto_generated_guid: 99c657aa-ebeb-4179-a665-69288fdd12b8
Inputs:
None
Attack Commands: Run with command_prompt! Elevation Required (e.g. root or admin)
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reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" /v AutoShareServer /t REG_DWORD /d 0 /f
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" /v AutoShareWks /t REG_DWORD /d 0 /f
Cleanup Commands:
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reg delete "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" /v AutoShareServer /f
reg delete "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" /v AutoShareWks /f
Atomic Test #5 - Remove Administrative Shares
Administrative shares are hidden network shares created by Microsoft’s Windows NT operating systems that grant system administrators remote access to every disk volume on a network-connected system. As Microsoft puts it, “Missing administrative shares typically indicate that the computer in question has been compromised by malicious software. https://threatpost.com/conti-ransomware-gang-has-full-log4shell-attack-chain/177173/
Supported Platforms: windows
auto_generated_guid: 4299eff5-90f1-4446-b2f3-7f4f5cfd5d62
Inputs:
None
Attack Commands: Run with command_prompt! Elevation Required (e.g. root or admin)
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for %i in (C$ IPC$ ADMIN$) do net share %i /delete
Cleanup Commands:
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net share ADMIN$ /UNLIMITED >nul 2>&1
net share C$=C:\ >nul 2>&1
net share IPC$ >nul 2>&1