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bert

BERT is a newly emerged ransomware group first identified in mid-2025, targeting Windows and Linux platforms across healthcare, technology, and event services sectors in Asia, Europe, and the US, with ransomware derived from a Linux variant of REvil using AES encryption and multi-threaded file locking.

How we source and review actor profiles
Motivation
ransomware
Last seen
2025-06-10
Sectors
technology, professional-services, healthcare, other, transportation
Status
Dormant

Activity timeline

A dated ledger of actor-claimed victims, campaigns, indicators, identity mappings, relationships, and CVE links. Each date states what it measures. For extensive leak-site histories, victim entries are limited to the 100 most recent distinct listings.

First listed
Victim claimS5 Agency World listed by bert

Actor-claimed victim evidence. This listing is not independent confirmation of compromise.

Actor Claimed
Last observed
Indicator1 indicator cataloged

Types: onion.

First listed
Victim claimColumbia TI listed by bert

Actor-claimed victim evidence. This listing is not independent confirmation of compromise.

Actor Claimed
First listed
Victim claimWawasan Dengkil Sdn Bhd listed by bert

Actor-claimed victim evidence. This listing is not independent confirmation of compromise.

Actor Claimed
First listed
Victim claimALL RING TECH CO., LTD. listed by bert

Actor-claimed victim evidence. This listing is not independent confirmation of compromise.

Actor Claimed
First listed
Victim claimSIMCO Electronics listed by bert

Actor-claimed victim evidence. This listing is not independent confirmation of compromise.

Actor Claimed
First listed
Victim claimYozgat City Hospital listed by bert

Actor-claimed victim evidence. This listing is not independent confirmation of compromise.

Actor Claimed
First listed
Victim claimNational Ticket Company listed by bert

Actor-claimed victim evidence. This listing is not independent confirmation of compromise.

Actor Claimed

Identity and attribution

Exact names and tracking identifiers resolve to this canonical profile. Rebrands, affiliations, and overlapping clusters remain separate confidence-rated relationships.

Name map

bertCanonical Name

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