EntryShell
- First seen
- 2021-07-01 00:00:00
- Malware type
- backdoor
- Profile updated
- 2026-07-07 15:00:02
Targeted industries: government-and-public-sector technology-and-telecommunications
Targeted regions: country_code:cn country_code:tw
Context
Fileless malware 'EntryShell', a variant of the KeyBoy malware, due to similarities in backdoor command IDs and debug messages with old KeyBoy samples. The embedded malware config was encrypted with a unique algorithm.
Detection coverage
- 1 YARA rules
Detection rules
- MALPEDIA_Win_Entryshell_Auto (yara-rule)
Reports & references
- malpedia.caad.fkie.fraunhofer.de — Win.Entryshell (report)
- virusbulletin.com — Unveiling Activities Tropic Trooper 2023 Deep Analysis Xiangoop Loader And Entryshell Payload (report)
- blog-en.itochuci.co.jp — 173200 (report)