Overview

overview

10

Static

static

3

b57b6603c0...2N.exe

windows7-x64

10

b57b6603c0...2N.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b57b6603c03bf53c7dd01806678f75ee6c4fe82f17a7abb5e7a0baf555d22252N.exe

  • Size

    85KB

  • Sample

    241220-cvhhhawrby

  • MD5

    15cae69282880edaf7ca090ab51089a0

  • SHA1

    a0ce11fd82a53b9559a6f2f1c64e8764ee4ea475

  • SHA256

    b57b6603c03bf53c7dd01806678f75ee6c4fe82f17a7abb5e7a0baf555d22252

  • SHA512

    85e4a8727267533e6dcfb2430c3fff48d897127efecd8d560ee3c5562e018f484de229b8dc48224490de177f336016330c2d00335a1ba0208311d297df170045

  • SSDEEP

    1536:lI76Wj54gtfoQggNPlcULTP9I7rB6embRdyVfkFHLXkFyxwdSn2OJ:lI7RgONc6T1/bkCHLXkFyxWs5J

Score
10/10
silverratevasionexecutionpersistencetrojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

147.185.221.17:32088

Mutex

SilverMutex_gRDGEIDSol

Attributes
  • certificate

    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

  • decrypted_key

    -|S.S.S|-

  • discord

    https://discord.com/api/webhooks/1317585089491767437/EBZbSF2FiNBbHexoCGKLxakpdgSZYjt6BQiH3BvbQugwGwkh8GiPw2PK5PuIKigfB8xR

  • key

    yy6zDjAUmbB09pKvo5Hhug==

  • key_x509

    VHdXZ3R2VEpOVWFNeEFGY0R0RlNIQVJSRFJrbm56

  • payload_url

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

  • reconnect_delay

    4

  • server_signature

    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

Targets

    • Target

      b57b6603c03bf53c7dd01806678f75ee6c4fe82f17a7abb5e7a0baf555d22252N.exe

    • Size

      85KB

    • MD5

      15cae69282880edaf7ca090ab51089a0

    • SHA1

      a0ce11fd82a53b9559a6f2f1c64e8764ee4ea475

    • SHA256

      b57b6603c03bf53c7dd01806678f75ee6c4fe82f17a7abb5e7a0baf555d22252

    • SHA512

      85e4a8727267533e6dcfb2430c3fff48d897127efecd8d560ee3c5562e018f484de229b8dc48224490de177f336016330c2d00335a1ba0208311d297df170045

    • SSDEEP

      1536:lI76Wj54gtfoQggNPlcULTP9I7rB6embRdyVfkFHLXkFyxwdSn2OJ:lI7RgONc6T1/bkCHLXkFyxWs5J

    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

    • Legitimate hosting services abused for malware hosting/C2

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks