The xlsb mail attachment contacts a url and downloads the malware from an opendir, which also contains Ursnif/Gozi and is constantly updated.
Technical analysis by the Malware Hunter JAMESWT
New Dridex global campaign via couriers and Cutwail. Fake xlsm invoice, distributed by the botnet, contact a random link from an internal list and download the malware
New global courier-themed Dridex campaign. The bait is an invoice with an xlsm attachment.
The file, if open, contacts a random link from an internal list and downloads the DLL, which starts the malware infection chain. Moreover, as cybersecurity researcher moto_sato discovered, malicious documents continue to be distributed by the Cutwail botnet. Dridex is a very dangerous banking Trojan used by cybercrime, which has long been the protagonist of campaigns all over the world, especially with a courier theme. The targets are mainly companies, but not only.