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2026-10-01 ⋅ Proofpoint ⋅ Mark Kelly, Proofpoint Threat Research Team
Hallucinating Credibility: China-Aligned TA419 Impersonates its Way into US AI Policy Circles
Evilginx TA419
2025-08-25 ⋅ circleid ⋅ WhoisXML API
RomCom and TransferLoader IoCs in the Spotlight
ROMCOM RAT TransferLoader
2024-05-30 ⋅ circleid ⋅ WhoisXML API
A DNS Investigation of the Phobos Ransomware 8Base Attack
8Base Phobos
2023-08-24 ⋅ circleid ⋅ WhoisXML
Signs of MuddyWater Developments Found in the DNS
PhonyC2 Storm-1084
2023-04-12 ⋅ circleid ⋅ WhoisXML API
Probing Lorec53 Phishing through the DNS Microscope
SaintBear
2021-11-10 ⋅ CIRCL ⋅ CIRCL
TR-64 - Exploited Exchange Servers - Mails with links to malware from known/valid senders
QakBot
2020-12-01 ⋅ Qianxin ⋅ Qi Anxin Threat Intelligence Center
Blade Eagle Group - Targeted attack group activities circling the Middle East and West Asia's cyberspace revealed
SpyNote BladeHawk
2020-12-01 ⋅ CitizenLab ⋅ Bill Marczak, John Scott-Railton, Ron Deibert, Siddharth Prakash Rao, Siena Anstis
Running in Circles Uncovering the Clients of Cyberespionage Firm Circles
2020-11-12 ⋅ circleid ⋅ Jonathan Zhang
An Investigative Analysis of the Silent Librarian IoCs
2019-11-20 ⋅ 360 ⋅ admin001
Shadow of the Circle Hovering Over Central Asia - The Golden Eagle (APT-C-34) Organizing Attack Revealed
RCS APT-C-34
2017-12-01 ⋅ Check Point ⋅ Neomi Rona, Stanislav Skuratovich
Nine circles of Cerber
Cerber
2017-01-05 ⋅ Twitter (@struppigel) ⋅ Karsten Hahn
Tweet on ComradeCircle Ransomware
ComradeCircle
2014-11-26 ⋅ CIRCL ⋅ CIRCL
TR-23 Analysis - NetWiredRC malware
NetWire RC
2014-01-01 ⋅ circl.lu ⋅ CIRCL
TR-25 Analysis - Turla / Pfinet / Snake/ Uroburos
Cobra Carbon System Uroburos Turla
2013-05-30 ⋅ CIRCL ⋅ CIRCL
Analysis of a stage 3 Miniduke sample
MiniDuke
2013-05-29 ⋅ CIRCL ⋅ CIRCL
Malware analysis report of a Backdoor.Snifula variant
Snifula
2013-03-29 ⋅ Computer Incident Response Center Luxembourg ⋅ CIRCL
Analysis Report (TLP:WHITE) Analysis of a PlugX variant (PlugX version 7.0)
PlugX