X-Agent (Malware Family) By Fraunhofer FKIE Archived: 2026-04-05 16:28:09 UTC elf.xagent (Back to overview) X-Agent aka: splm, chopstick, fysbis Actor(s): APT28 There is no description at this point. References 2020-09-10 ⋅ Kaspersky Labs ⋅ GReAT An overview of targeted attacks and APTs on Linux Cloud Snooper Dacls DoubleFantasy MESSAGETAP Penquin Turla Tsunami elf.wellmess X-Agent 2020-01-01 ⋅ Secureworks ⋅ SecureWorks IRON TWILIGHT X-Agent X-Agent X-Agent Computrace HideDRV Sedreco Seduploader X-Agent XTunnel Zebrocy Zebrocy (AutoIT) 2018-02-20 ⋅ Kaspersky Labs ⋅ GReAT A Slice of 2017 Sofacy Activity X-Agent Seduploader X-Agent Zebrocy Zebrocy (AutoIT) APT28 2017-02-20 ⋅ Contagio Dump ⋅ Mila Parkour Part I. Russian APT - APT28 collection of samples including OSX XAgent X-Agent Komplex Coreshell Downdelph HideDRV SEADADDY Sedreco Seduploader X-Agent XTunnel 2016-10-20 ⋅ ESET Research ⋅ ESET Research En Route with Sednit Part 2: Observing the Comings and Goings X-Agent Sedreco X-Agent XTunnel 2016-06-15 ⋅ CrowdStrike ⋅ Dmitri Alperovitch Bears in the Midst: Intrusion into the Democratic National Committee X-Agent ATI-Agent SEADADDY Seduploader X-Agent XTunnel APT28 https://malpedia.caad.fkie.fraunhofer.de/details/elf.xagent Page 1 of 2 2016-02-12 ⋅ Palo Alto Networks Unit 42 ⋅ Bryan Lee, Rob Downs A Look Into Fysbis: Sofacy’s Linux Backdoor X-Agent 2016-02-12 ⋅ Palo Alto Networks Unit 42 ⋅ Bryan Lee, Rob Downs A Look Into Fysbis: Sofacy’s Linux Backdoor X-Agent 2015-12-17 ⋅ Bitdefender ⋅ Bitdefender APT28 Under the Scope: A Journey into Exfiltrating Intelligence and Government Information X-Agent XP PrivEsc (CVE-2014-4076) There is no Yara-Signature yet. Source: https://malpedia.caad.fkie.fraunhofer.de/details/elf.xagent https://malpedia.caad.fkie.fraunhofer.de/details/elf.xagent Page 2 of 2