Malicious archives often contain disguised executables ( .exe , .scr , .vbs , .js ) or documents with embedded macros ( .docm , .xlsm ).
Compressed archives are a standard delivery mechanism for "Stealer" malware (like RedLine or Raccoon) or Ransomware, often sent via phishing emails. 879COMP.7z
The .7z extension indicates a 7-Zip compressed archive, which often uses high-ratio LZMA/LZMA2 compression. Malicious archives often contain disguised executables (