MALICIOUS — persistencia2.js

MALICIOUS — persistencia2.js is a script sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (84/100). 2 of 54 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

• SHA-256: d3ed7bc7822f71e2226b72dd41e70f379d689b62bf4439f873407b29e7221cd4
• SHA-1: e5d14f5d34f5bd7c4e7657fdf74fd92a8e8d0c29
• MD5: 2c0f09634a2dad8055829dd00eb78560
• ssdeep: 24576:HHZcI71iiGT3lg8itFE8T9eqxEo7pzxvnfKwhqprIZVZJUqZcOjh+BRIUC1O2/p3:HH/1ibYtWvqyCnc+pN2m+BRIcABR
• TLSH: T1F95912086D792BD33EC765AD9162C85D105CC458BB2131F1BFDB2A80DBAEED0C4E48A5
• Submitted as: persistencia2.js
• File type: script · Size: 1812113 bytes
• Verdict: malicious (84/100)

Detections (2 of 54 engines)

• capa (capabilities): capability:execution/powershell
• Kaspersky (KVRT): HEUR:Trojan.Script.Alien.gen

MITRE ATT&CK

• T1059.001

Why this verdict

The malicious score of 84/100 is the fusion of 4 weighted signals:

• Kaspersky (KVRT) flagged HEUR:Trojan.Script.Alien.gen (rule HEUR:Trojan.Script.Alien.gen) - engine signal, weight 0.55, confidence 0.85
• Obfuscated powershell script: dynamic-exec, encoded-command, defense-evasion (layers: concat) (rule script-deobfuscation) - static signal, weight 0.55, confidence 0.75
• execute via PowerShell (rule execute via PowerShell) - capa signal, weight 0.40, confidence 0.80
• capa (capabilities) flagged capability:execution/powershell (rule capability:execution/powershell) - engine signal, weight 0.35, confidence 0.70

Dynamic analysis

No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.

File paths

• C:\\Temp

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report