Squirrelwaffle
Techniques Used |
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| Domain | ID | Name | Use | |
|---|---|---|---|---|
| Enterprise | T1071 | .001 | Application Layer Protocol: Web Protocols |
Squirrelwaffle has used HTTP POST requests for C2 communications.(Citation: ZScaler Squirrelwaffle Sep 2021) |
| Enterprise | T1560 | .003 | Archive Collected Data: Archive via Custom Method |
Squirrelwaffle has encrypted collected data using a XOR-based algorithm.(Citation: ZScaler Squirrelwaffle Sep 2021) |
| Enterprise | T1059 | .001 | Command and Scripting Interpreter: PowerShell |
Squirrelwaffle has used PowerShell to execute its payload.(Citation: ZScaler Squirrelwaffle Sep 2021)(Citation: Netskope Squirrelwaffle Oct 2021) |
| .003 | Command and Scripting Interpreter: Windows Command Shell |
Squirrelwaffle has used `cmd.exe` for execution.(Citation: Netskope Squirrelwaffle Oct 2021) |
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| .005 | Command and Scripting Interpreter: Visual Basic |
Squirrelwaffle has used malicious VBA macros in Microsoft Word documents and Excel spreadsheets that execute an `AutoOpen` subroutine.(Citation: ZScaler Squirrelwaffle Sep 2021)(Citation: Netskope Squirrelwaffle Oct 2021) |
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| Enterprise | T1132 | .001 | Data Encoding: Standard Encoding |
Squirrelwaffle has encoded its communications to C2 servers using Base64.(Citation: ZScaler Squirrelwaffle Sep 2021) |
| Enterprise | T1027 | .002 | Obfuscated Files or Information: Software Packing |
Squirrelwaffle has been packed with a custom packer to hide payloads.(Citation: ZScaler Squirrelwaffle Sep 2021)(Citation: Netskope Squirrelwaffle Oct 2021) |
| .013 | Obfuscated Files or Information: Encrypted/Encoded File |
Squirrelwaffle has been obfuscated with a XOR-based algorithm.(Citation: ZScaler Squirrelwaffle Sep 2021)(Citation: Netskope Squirrelwaffle Oct 2021) |
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| Enterprise | T1566 | .001 | Phishing: Spearphishing Attachment |
Squirrelwaffle has been distributed via malicious Microsoft Office documents within spam emails.(Citation: Netskope Squirrelwaffle Oct 2021) |
| .002 | Phishing: Spearphishing Link |
Squirrelwaffle has been distributed through phishing emails containing a malicious URL.(Citation: ZScaler Squirrelwaffle Sep 2021) |
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| Enterprise | T1218 | .010 | System Binary Proxy Execution: Regsvr32 |
Squirrelwaffle has been executed using `regsvr32.exe`.(Citation: ZScaler Squirrelwaffle Sep 2021) |
| .011 | System Binary Proxy Execution: Rundll32 |
Squirrelwaffle has been executed using `rundll32.exe`.(Citation: ZScaler Squirrelwaffle Sep 2021)(Citation: Netskope Squirrelwaffle Oct 2021) |
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| Enterprise | T1204 | .001 | User Execution: Malicious Link |
Squirrelwaffle has relied on victims to click on a malicious link send via phishing campaigns.(Citation: ZScaler Squirrelwaffle Sep 2021) |
| .002 | User Execution: Malicious File |
Squirrelwaffle has relied on users enabling malicious macros within Microsoft Excel and Word attachments.(Citation: ZScaler Squirrelwaffle Sep 2021)(Citation: Netskope Squirrelwaffle Oct 2021) |
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