← All ransomware groups
Fletchen logo

Ransomware group profile · #455 by claimed victims

Fletchen ransomware

Fletchen is primarily documented as a sophisticated infostealer-as-a-service written in Rust, targeting browser credentials, cryptocurrency wallets, and financial data, used by groups including Hunters International; its developer also advertises ransomware services on underground forums.

Active First seen Jan 2026
0Victims claimed on leak sites
0Victims in the last 30 days
0Victims in the last 90 days
0Countries hit
1Leak-site URLs tracked, 0 online
—Latest claim recorded

Tactics, techniques and procedures

ATT&CK technique mapping for Fletchen is in progress. Victimology, infrastructure status and leak-site tracking are live above.

Indicators, detections and the full playbook

Hashes, C2 addresses, onion services, Sigma and YARA detections per technique, and the negotiation transcripts are available to signed-in analysts.

See full IOCs

Frequently asked

Is Fletchen ransomware still active?
Fletchen is tracked as active.
How many victims has Fletchen claimed?
VULONE has recorded 0 leak-site victim claims attributed to Fletchen, across 0 countries and 0 sectors.
Which industries does Fletchen target?
Sector data for Fletchen victims is not yet available.
Which countries are most affected by Fletchen?
Country data for Fletchen victims is not yet available.
Where does VULONE get Fletchen victim data?
Claims are collected continuously from the group's own leak sites and cross-checked with ransomware.live and RansomLook. A claim is the group's assertion, not a confirmed breach.

Other ransomware groups

Qilin logoQilin2,310 victims Lockbit3 logoLockbit32,016 victims Akira logoAkira1,618 victims Clop logoClop1,344 victims Play1,316 victims Lockbit21,002 victims Incransom936 victims Thegentlemen867 victims

Victim claims are collected from leak sites and enrichment partners (ransomware.live, RansomLook) and represent the group's own assertions, not confirmed breaches. Profile last updated 16 September 2026. Questions or corrections: [email protected].