SkinnyBoy
- First seen
- 2021-06-08 00:00:00
- Malware type
- backdoor
- Profile updated
- 2026-07-07 15:20:12
Targeted industries: government-and-public-sector
Targeted regions: country_code:ua
Context
SkinnyBoy is a backdoor malware used in cyber espionage campaigns, particularly targeting the government sector. It has been observed in attacks attributed to advanced persistent threat groups.
Detection coverage
- 7 YARA rules
Detection rules
- ARKBIRD_SOLG_MAL_Skinnyboy_Launcher_Jun_2021_1 (yara-rule)
- ARKBIRD_SOLG_MAL_Skinnyboy_Implant_Jun_2021_1 (yara-rule)
- ARKBIRD_SOLG_MAL_Skinnyboy_Dropper_Jun_2021_1 (yara-rule)
- CLUSTER25_APT28_Skinnyboy_Implanter (yara-rule)
- CLUSTER25_APT28_Skinnyboy_Launcher (yara-rule)
- SIGNATURE_BASE_APT28_Skinnyboy_Dropper_1 (yara-rule)
- MALPEDIA_Win_Skinnyboy_Auto (yara-rule)
Reports & references
- malpedia.caad.fkie.fraunhofer.de — Win.Skinnyboy (report)
- cybergeeks.tech — Skinnyboy Apt28 (report)
- cluster25.io — 2021 05 Fancybear (report)