326. Adversaries Abuse XstExport to Exract Emails Before Exfiltration

Hello everyone!

Espionage-focused adverasaries often show interest in emails. In some cases they can even read them before exfiltration. And they may need some tools to export them!

According to this report, the adversary leveraged XstExport - a legitimate open source tool for exporting the content of Microsoft Outlook OST and PST files:

XstExport.exe -e <email>@<domain>.ost2

You don't use it in your environment? Why not to hunt it!

event_type: "processcreatewin"

AND

proc_file_productname: "XstExport"

See you tomorrow!

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