https://bbs.microsoftsync.net/5Gsm

Classification: Malicious

https://bbs.microsoftsync.net/5Gsm is a malicious URL. Linked to Cobalt Strike malware. 346 sightings from Threat Observatory, last seen 2026-04-18.

Current activity

  • Offline — no longer resolving. Last online 2026-09-15 23:03:01.
  • Command & Control server — Used by cybercriminals to control victim computers.

MITRE ATT&CK associations

Malware families: COBALT STRIKE (S0154)

Where it has been seen

Observed by Maltiverse Threat Observatory sensors in BR and NL, across healthcare networks.

Blacklist sightings

Description Source First seen Last seen Labels MITRE ATT&CK
Cobalt strike Maltiverse Threat Observatory 2026-04-18 11:27:30 2026-04-18 12:27:30 botnet country_code:br country_code:nl industry:healthcare-and-pharmaceutical malicious-activity S0154 Cobalt Strike

URL information

Hostname
bbs.microsoftsync.net
Domain
microsoftsync.net
TLD
net
SHA-256
b6d136776d86302193e310c4d84c10b0bcadbcd92aa88e9f319f2d0881fab165
First indexed
2026-04-22 01:39:21
Last updated
2026-09-15 23:03:01
Last online
2026-09-15 23:03:01