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Tick, also known as BRONZE BUTLER, RedBaldKnight, Stalker Panda, Stalker Taurus, Swirl Typhoon, and Tellurium, is a China-linked cyber-espionage threat actor. Its operations have targeted organizations in Japan, South Korea, Russia, China, Mongolia, the United States, Hong Kong, Singapore, and Taiwan. Tick has used spearphishing emails carrying malicious Microsoft Word attachments for initial access. Post-compromise tradecraft includes PowerShell and Visual Basic-based script execution, downloading and decoding payloads, DLL side-loading through legitimate applications, scheduled-task creation with schtasks for lateral movement, screen capture, file discovery and targeted file collection, and exfiltration to command-and-control infrastructure. The group has encoded data sent to command-and-control servers using Base64 and used RC4, AES, and custom XOR-based mechanisms to obfuscate HTTP communications.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
64 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
40 malware families attributed to this actor across reporting.
35 additional families tracked in Mallory.
12 CVEs this actor has used in observed campaigns. 12 of them exploited in the wild.
CVE-2021-26855 (CVSS Score: 9.1/10) – Is a server-side request forgery (SSRF) vulnerability in Microsoft Exchange, which allows a threat actor to send an arbitrary HTTP request and authenticate as the Exchange server.
The exploitation of a recently disclosed critical security flaw in Motex Lanscope Endpoint Manager has been attributed to a cyber espionage group known as Tick. The vulnerability, tracked as CVE-2025-61932 (CVSS score: 9.3), allows remote attackers to execute arbitrary commands with SYSTEM privileges... confirmed reports of active abuse of the security defect to drop a backdoor on compromised systems.
CVE-2021-27065 (CVSS 7.8) is a post-authentication arbitrary file write vulnerability in Exchange. If the threat actor first authenticates with the Exchange server they could then use this vulnerability to write a file to any path on the server.
RoyalRoad is a tool that generates weaponized RTF documents that exploit the following vulnerabilities in Microsoft’s Equation Editor: CVE-2017-11882, CVE-2018-0798 and CVE-2018-0802.
RoyalRoad is a tool that generates weaponized RTF documents that exploit the following vulnerabilities in Microsoft’s Equation Editor: CVE-2017-11882, CVE-2018-0798 and CVE-2018-0802.
7 more CVEs tied to this actor tracked in Mallory.
77 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
BRONZE BUTLER appears only in the detection's annotations list.
Listed in the detection's Annotations section.
Listed in the detection's APT annotations.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.