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.
Arrives via "thread hijacking" (replying to existing email chains).
If this file was found on a production system, isolate the host immediately to prevent lateral movement. 220921A4.7z
The recipient is provided a password (often "1234") to extract the archive.
Part of a coordinated phishing campaign identified around September 21, 2022 . The archive typically contained a malicious file—often an
Initial access for ransomware deployment or data exfiltration. .7z (used to evade automated sandbox detection). Security Recommendations
Check for execution of regsvr32.exe or rundll32.exe shortly after the file was downloaded. The recipient is provided a password (often "1234")
Once extracted, the user executes the internal file, which reaches out to a Command & Control (C2) server to download the primary malware payload. Technical Indicators (Estimated) Typical Value Original Date September 21, 2022 Archive Password 1234 or abc123 Primary Goal