A few days ago I wrote a diary called "Malicious Script Delivering More Maliciousness"[1]. In the malware infection chain, there was a JPEG picture that embedded the last payload delimited with "BaseStart-" and "-BaseEnd" tags. Today, I discovered anoher campaign that relies exactly on the same technique. It started with an attachment called "TELERADIO_IB_OBYEKTLRIN_BURAXILIS_FORMASI.xIs" (SHA256:1bf3ec53ddd7399cdc1faf1f0796c5228adc438b6b7fa2513399cdc0cb865962). The file in itself is not interesting, it contains a good old Equation Editor exploit (CVE-2017-11882). The exploit triggers the download of an HTA payload that executes a PowerShell payload and finally a DLL: When I investigated the different payload, there was pretty simple to deobfuscated, the interesting code was polluted with…