Folder Compress To Potentially Suspicious Output Via Compress-Archive Cmdlet
Detects PowerShell scripts that make use of the "Compress-Archive" Cmdlet in order to compress folders and files where the output is stored in a potentially suspicious location that is used often by malware for exfiltration. An adversary might compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
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Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
detection:
selection:
CommandLine|contains:
- 'Compress-Archive -Path*-DestinationPath $env:TEMP'
- 'Compress-Archive -Path*-DestinationPath*\AppData\Local\Temp\'
- 'Compress-Archive -Path*-DestinationPath*:\Windows\Temp\'
condition: selectionFalse positive likelihood has not been assessed. Additional context may be needed during triage.
Tactics
Sub-techniques
Zip A Folder With PowerShell For Staging In Temp - PowerShell
Detects PowerShell scripts that make use of the "Compress-Archive" Cmdlet in order to compress folders and files where the output is stored in a potentially suspicious location that is used often by malware for exfiltration. An adversary might compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
Detects similar activity. Both rules may fire on overlapping events.
Zip A Folder With PowerShell For Staging In Temp - PowerShell Module
Detects PowerShell scripts that make use of the "Compress-Archive" Cmdlet in order to compress folders and files where the output is stored in a potentially suspicious location that is used often by malware for exfiltration. An adversary might compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
Detects similar activity. Both rules may fire on overlapping events.
Zip A Folder With PowerShell For Staging In Temp - PowerShell Script
Detects PowerShell scripts that make use of the "Compress-Archive" Cmdlet in order to compress folders and files where the output is stored in a potentially suspicious location that is used often by malware for exfiltration. An adversary might compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
Detects similar activity. Both rules may fire on overlapping events.