EnvyScout

MITRE ATT&CK: S0634 View on attack.mitre.org

Aliases: ROOTSAW, EnvyScout

First seen
2021-01-01 00:00:00
Malware type
dropper
Family
Malware family
Operating systems
windows
Profile updated
2026-07-07 13:20:46

Targeted industries: government-and-public-sector healthcare-and-pharmaceutical technology-and-telecommunications

Targeted regions: country_code:us country_code:gb country_code:de

Context

EnvyScout is a dropper that has been used by APT29 since at least 2021.

Detection coverage

  • 4 YARA rules
  • 231 Sigma rules

Malware & tools used

  • System Information Discovery (attack-pattern)
  • Execution Guardrails (attack-pattern)
  • Malicious File (attack-pattern)
  • Rundll32 (attack-pattern)
  • Data from Local System (attack-pattern)
  • Spearphishing Attachment (attack-pattern)
  • Deobfuscate/Decode Files or Information (attack-pattern)
  • Encrypted/Encoded File (attack-pattern)
  • JavaScript (attack-pattern)
  • Hidden Files and Directories (attack-pattern)
  • Windows Command Shell (attack-pattern)
  • HTML Smuggling (attack-pattern)
  • Forced Authentication (attack-pattern)
  • Masquerading (attack-pattern)

Used by threat actors

Detection rules

  • ARKBIRD_SOLG_MAL_Envyscout_May_2021_1 (yara-rule)
  • CLUSTER25_APT29_Htmlsmuggling_ZIP_82733_00001 (yara-rule)
  • SIGNATURE_BASE_APT_APT29_NOBELIUM_JS_Envyscout_May21_1 (yara-rule)
  • SIGNATURE_BASE_APT_APT29_NOBELIUM_JS_Envyscout_May21_2 (yara-rule)

Reports & references

  • Microsoft — Breaking Down Nobeliums Latest Early Stage Toolset (report)
  • mrtiepolo.medium.com — Sophisticated Apt29 Campaign Abuses Notion Api To Target The European Commission 200188059F58 (report)
  • incibe-cert.es — Incibe Cert Estudio Analisis Nobelium 2022 V1 (report)
  • incibe.es — Incibe Cert Estudio Analisis Nobelium 2022 V1 (report)
  • cert.pl — Kampania Szpiegowska Apt29 (report)
  • Mandiant — Apt29 Evolving Diplomatic Phishing (report)
  • go.recordedfuture.com — Cta 2022 0503 (report)
  • Palo Alto Unit 42 — Cloaked Ursa Online Storage Services Campaigns (report)
  • sekoia.io — Nobeliums Envyscout Infection Chain Goes In The Registry Targeting Embassies (report)
  • blog.bushidotoken.net — Overview Of Russian Gru And Svr (report)
  • malpedia.caad.fkie.fraunhofer.de — Win.Envyscout (report)
  • cert-agid.gov.it — Il Malware Envyscout Apt29 E Stato Veicolato Anche In Italia (report)
  • blogs.blackberry.com — Nobelium Targets Eu Governments Assisting Ukraine (report)
  • MITRE ATT&CK — S0634 (report)

External references