MALWARE FAMILY
Grenam
Internal ID: win.grenam
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
A malware that modifies every JPG file found on a computer by adding a string in its bottom corner spelling out 'I am Sorry'.
Grenam is a companion virus, which is a form of file infection. It infects by prepending the letter 'g' in front of host files and placing itself with the original name of the host.
Threat Analysis
Grenam is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.
External References
Quick Facts
TypeMalware Family
Aliases1
Also Known As
win.grenam
Research Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.