Overview

overview

10

Static

static

10

SilverClient.exe

windows7-x64

10

SilverClient.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    SilverClient.exe

  • Size

    43KB

  • Sample

    241130-n9lz1stkdt

  • MD5

    77e52bd69cd31b84f909a737ebcb92cc

  • SHA1

    c2ea68fc905a695f071e242b0782ef2996122a96

  • SHA256

    ac8c2379cef34550f244e79d20d6c5d1b7f1e780712168536a06e64b692b8513

  • SHA512

    6e0062f85604bb310730a2fbb87365d6543c92568561b5666af5f8939b325a464769c554751e149becd412862515c7a1e653ce07591094be1ddf2330d45a6b61

  • SSDEEP

    768:2uIQbKCHbymqTYV6O1i/MiZHFPsenEsJCSZbYvlGGooooizJj6RUT0v9SNHXhXBL:BIEKCtIO1nGFPsenEFWJj6GAv9iBor/Y

Score
10/10
silverratevasionexecutionpersistencetrojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

following-geometry.gl.at.ply.gg:11493

Mutex

SilverMutex_VEYRwaRvUo

Attributes
  • certificate

    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

  • decrypted_key

    -|S.S.S|-

  • key

    yy6zDjAUmbB09pKvo5Hhug==

  • key_x509

    U0tZRVJueVNXY2NSek1admhOVFlpc0JFcFJHbWVN

  • reconnect_delay

    4

  • server_signature

    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

Targets

    • Target

      SilverClient.exe

    • Size

      43KB

    • MD5

      77e52bd69cd31b84f909a737ebcb92cc

    • SHA1

      c2ea68fc905a695f071e242b0782ef2996122a96

    • SHA256

      ac8c2379cef34550f244e79d20d6c5d1b7f1e780712168536a06e64b692b8513

    • SHA512

      6e0062f85604bb310730a2fbb87365d6543c92568561b5666af5f8939b325a464769c554751e149becd412862515c7a1e653ce07591094be1ddf2330d45a6b61

    • SSDEEP

      768:2uIQbKCHbymqTYV6O1i/MiZHFPsenEsJCSZbYvlGGooooizJj6RUT0v9SNHXhXBL:BIEKCtIO1nGFPsenEFWJj6GAv9iBor/Y

    Score
    10/10
    silverratevasionexecutionpersistencetrojan

    • SilverRat

      SilverRat is trojan written in C#.

      trojansilverrat

    • Silverrat family

      silverrat

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks