General

  • Target

    uicleaner.rar

  • Size

    21KB

  • Sample

    241205-3jkftsxqay

  • MD5

    21ce089b73abfe627964101cb3e90750

  • SHA1

    9ef3491cb54b2369715b5c553e8fbed7b4f8c97b

  • SHA256

    e40efe97ccad1bbdbb23f174021b1f09337120467683c1a43ec242c1bd05fd34

  • SHA512

    889485a5f74894996bf8fcc989743946c7e04cd685f6a4d7a534ebf2940c3a73b76b61950902cfc42b14dfcf09793f326eaa94bb11012986739d82a938a40a30

  • SSDEEP

    384:DQI8L1sz1AnrgtkbXyzuKc3+sl3V0gNCkE68NyU+wnp91+AUyagq5a:sjCJAnrD+PcV0xr68vTQAF3

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

127.0.0.1:9999

Mutex

SilverMutex_DAwTXvYWLg

Attributes
  • certificate

    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

  • decrypted_key

    -|S.S.S|-

  • discord

    https://discordapp.com/api/webhooks/1314081482104639619/D3vzl80TdaZVHZuQw9rLYcGF2kBI8FG0yEJRwv1f5fqnIFQfa5M6ytSzp8W_y6wubrZ2

  • key

    yy6zDjAUmbB09pKvo5Hhug==

  • key_x509

    UlR1VG5kZ1RqUVhUZFlsTnNEeVRJVERsY3lSU09I

  • payload_url

    https://g.top4top.io/p_2522c7w8u1.png

  • reconnect_delay

    4

  • server_signature

    aL8SwoepZti6PXNM6PH6bZKjX93qsWqQyojA+fcv4gcvvj5Kqq5e0eNyP+a54loHFBCxufdPPvL5X5hu+/Mbx3A8ifzVOjTfWiLAr4lo2yHTmOH9mXMX5WlrcEmNAXOoXXhxI6ZtTlon7TJyQr62NSquYKc1wZZBlM/7relztCxflbw5Gb6s6WUWbKDhnVuYB1mr40mJyYDwia15p3WuvNCOf//Ra+h0MfJ6f8QPRsv3xe8a7qwKegie7r4oZp6pGDXy1utSYjHcyKkNj8cc2dyGh7j1m55fSdwjZmPFiN4T3U/9O63yKMqCoHRana7zYAzVvFXA2BIVCvlaFPwFLBtQpL0WjOFXNfdo3yXR2DN88gj8waMdzoUITzkuGtdSeB9xKkkdkAX+/5A3lMgQyQSSUYZ4LsBERan46LfmGA45Jg2zHRgE6Iups/0+H4wfEMQsfIXfNyeCTosw3yoyfnby+IIr2OOeiHuvDBw22wyK1/RVS6vOVfFQo/yLipKPLZ5IrtIJK8yBrA8+FHkkgLusOMkNuZleFbF5DrMLbUKEgAoiepTRbBRapxaloXKHPO/tB/to7j+47cVnIxJC7OW7ozc/582XyAfurLMaA8MuUqm/CTzrXXgf6eGRIWRo3PjFmgExexQRscmGOO928Et+OIhMwYa1Rs3GuLdnJvw=

Targets

    • Target

      uicleaner.exe

    • Size

      44KB

    • MD5

      4ca3da3c637adf451703cb56c87ba7aa

    • SHA1

      7ce385bb7f8cbc50172620edf6602b8e509a6baa

    • SHA256

      5d69607e90c0f0903ce58cec6d7ac63580bd96b3df2ed4fe822c5402b1a571e4

    • SHA512

      bbd8bf79f30ba1e033c272f50f2555aab13b8a2b2a39f54fef831b76ea2972e15866a97a51a7621a9016ede141b4d6e3af210f7b4bfea840370460879cf444a1

    • SSDEEP

      768:edY/02ytTzDoX6KS1BVW8oWERULQqV9hL1OB6SnPv6/xJ:edM0n9KSoiEGsE9ioyPS/xJ

    • SilverRat

      SilverRat is trojan written in C#.

    • Silverrat family

    • Downloads MZ/PE file

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • A potential corporate email address has been identified in the URL: =@L

    • 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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks