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TacTap is a Linux credential-collection toolset used against TACACS authentication servers. It injects a malicious shared library into the running tac_plus process, intercepts accepted TACACS sessions, and relays session information to a separate local process for collection of credential material. Harvested data is stored locally in lightly XOR-obfuscated form. TacTap has been associated with the China-nexus Fire Ant espionage activity, which targeted network-management infrastructure including TACACS servers, Cisco IOS XR routers, and Linux management hosts. The toolset enables theft of administrative credentials used to access network equipment and supports follow-on access to connected environments.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
На одном из серверов TACACS исследователи обнаружили набор инструментов TacTap, предназначенный для кражи учетных данных.
4 distinct techniques documented for this family, organized by ATT&CK tactic.
Похищенная информация сохранялась в /var/log/.tacplus.acct и маскировалась простым XOR с ключом 0xEF.
3 indicators attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
IPs, domains, and DNS infrastructure linked to this family.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A credential-theft toolkit deployed on compromised TACACS authentication servers. It includes the acppid utility, which injects a malicious library into the tac_plus process to intercept new connections and capture active-session data.
A TACACS-targeting toolset that injects a malicious library into tac_plus, intercepts accepted administrative sessions, and captures credential material in an XOR-obfuscated artifact.
TACACS+ credential-collection toolset that injects a malicious library into tac_plus, hooks new authentication connections, passes session handles to a second local process, and stores captured credentials in an XOR-obfuscated file.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.