HOMETHREATSr77
MALWARE FAMILY

r77

Internal ID: win.r77
1
aliases
Last seen:Mar 17, 2026

Intelligence Profile

According to the author, r77 is a ring 3 rootkit that hides everything:

* Files, directories

* Processes & CPU usage

* Registry keys & values

* Services

* TCP & UDP connections

* Junctions, named pipes, scheduled tasks

Threat Analysis

r77 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

→https://github.com/bytecode77/r77-rootkit
→https://harfanglab.io/insidethelab/unpacking-packxor/
→https://twitter.com/malmoeb/status/1523179260273254407
→https://www.securonix.com/blog/analyzing-obscurebat-threat-actors-lure-victims-into-executing-malicious-batch-scripts-to-deploy-stealthy-rootkits

Quick Facts

TypeMalware Family
Aliases1

Also Known As

win.r77

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.
← All Threat Actors·Geopolitics Map·Search r77
r77 — Malware Family | Threat Intelligence | CTIWATCH.COM