Part of a coordinated phishing campaign identified around September 21, 2022 .
Check for execution of regsvr32.exe or rundll32.exe shortly after the file was downloaded.
Initial access for ransomware deployment or data exfiltration. .7z (used to evade automated sandbox detection). Security Recommendations 220921A4.7z
Reset user credentials and perform a full forensic sweep for secondary payloads (like Cobalt Strike beacons).
Historically linked to the TR (Qakbot) distribution infrastructure. Behavioral Pattern: Part of a coordinated phishing campaign identified around
The archive typically contained a malicious file—often an ISO image, a Windows Script File ( .wsf ), or a Shortcut file ( .lnk )—designed to execute a DLL (Dynamic Link Library) on the host system.
The recipient is provided a password (often "1234") to extract the archive. 220921A4.7z
Based on the specific filename , this file is frequently associated with malware analysis and threat intelligence reports from late 2022 . It often appears in investigations related to the Qakbot (Qbot) banking trojan or similar delivery campaigns that used password-protected .7z archives to bypass email security filters. Malware Analysis Summary: 220921A4.7z File Type: 7-Zip Compressed Archive ( .7z ).