silverrat

General

Target

SilverClient.exe
Size

43KB
Sample

250109-nkqlxaylht
MD5

7ca038b550ee364bc39ba3ebbfc0fb0e
SHA1

45969aca7d7850aa2fd1b1c3c03a65919effb899
SHA256

632afc11c1652f563a31015c766ce4d8f0d7ea34a5668511e7c08113e657cd3d
SHA512

c4d6b8aeb3397245591f2453ec0f4e55fd5333cb14b0c0fc82d0843cca925236a1143d52705cf2988580901e7bf122dc8c197da28c436fde633c244c127624c5
SSDEEP

768:JZiylKt1aCmWgYV6OZi/MiZHFPsxnEsJCSZbYvlGGooooizJjwRUT0v9S9HbExhI:JZigKtFIOZvGFPsxnEFWJjwGAv9KbExy

Score

10^/10

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

speed-janet.gl.at.ply.gg:2217

Mutex

SilverMutex_pJwESYkGuV

Attributes

certificate
MIIE4DCCAsigAwIBAgIQAKQYOfZd86J2BfNjhG4CWTANBgkqhkiG9w0BAQ0FADARMQ8wDQYDVQQDDAZTaWx2ZXIwIBcNMjIwODI2MTkwMTA4WhgPOTk5OTEyMzEyMzU5NTlaMBExDzANBgNVBAMMBlNpbHZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAPbpOWfhZTuOfEaqqImTTe5dNHAAry7/mf00DCoI4lPZfypsc1tYraxSPFeayGu09a3qdhkWKSVIgwnu2n4GLQNOCY9fh/1oyrX4Iir3BIkYeU7pKTWgjhUlAmFAUAaNr0ca23Ku2kN79jrDzRznOgE2DEW4p7OiM4Mb097ma9lzu7MyssHbY4VCteAhj9HZiplqBxaC1vXDmzxqG+gUZ1aLcyG7ssdkOjtWVBgT3gD/gOl7KchRzCFB1egDC/vD9WZCG35U3Ngi+IkTznoXR1R06cq4v0UnGjE37R2vcB21qb0ZYNiZJXZHv5i9+R7xoPeNoLda5PqnfGGbhPvNEdD56mdcOKlzGIuyemLkUo8texdpiBWKbtc3JZf5VsKxjJtHDK3xW6gDGI+PAirzGkFPmwcf8WgsblvzLg8OZpVxVs8rmKWoi6qIrf4CXnyl73J4lgzW+ir7PjANAQXwLNGdNnvdMeLeo/muGQPdeNpr6OczGGnkWA4qniHeL51/Gx0a8A+jP9zKiyu+qHcsP2IotgWDH/KlzJVr7IAum+DV92uV8poTDcUNcHaKvhHA65KmEtsvLbK6lFZcAMC0eWC0VgpW44T1/16rOaaky5mP6rTMc3nSyOl/lU/XgAgGGQPe22bRLWYzd3WVeEpI1WnHYXS+tL9IOe4kJP+pYsWDAgMBAAGjMjAwMB0GA1UdDgQWBBR32TJj2LeUx9L+RcSOvmFV6VJq6TAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBDQUAA4ICAQA+qucSOi7ov7Q1FmAjMf925KuvKuCNwJiu3Sqo3FDGVAD1fAwAi2FdyuXEO2VIUPZCkalFcBna5rqyrc6tcS4T0IL2TsYLrsuGir7PWP7CAcft1urYS1HpNpHxeH/nixwnQaQs/MuRmdm2TeCj6G21P5BTW55U5y9sMPSYwhbD2N7XLgnSQd5Y+80TR7FUiye/k3D37fI9PRhSQGbfYFRQQTmxj84dPTnY5CVgaY9d8fNiFZkyjaZdf+mibK0xQTf+xLVVj+toDNCkc1F462TdmFhCrHd4PoMo0yLDNv4SC6NLRq4haWDRtORw6gd5GYIoCQ3m3oQvNlNxXhhIjsOyxkxOrkCD0c+57PIc7EmKXieJa/XxnkcIVxO8dvTY/vijuz/VaZYl/lPu9ckuqgJ1wRvvsHl70Trv4Mn4X5uCIqRFFlK/mSOZbLIguGkDN3QIZABvej89vlZMhrVfZOG2oawe23FskHjv7thF/WzOXtWw6RUVC1V+hCwbuxFNUjZmmOTUwdXHnus7I2AuiG6Jz1+y9aYiXBcVTdSljxjHRRmiRaAnY94h58vN8NJ4hKL2GVCo6LxkpuplmcntJN0cKraKTPxSXcCRrqWxX9qoIbfvBcUU4vH1jPJCCLNCuDyD3lgQkpPVvq0EMU1a2HFGgMEQMjpYpb38rcadDhT5ag==
decrypted_key
-|S.S.S|-
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
UXF3ckpSV0ZzZnhEVFJ3b2FDUkZJSm5UamFDcUVR
reconnect_delay
4
server_signature
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

Targets

- Target
  
  SilverClient.exe
- Size
  
  43KB
- MD5
  
  7ca038b550ee364bc39ba3ebbfc0fb0e
- SHA1
  
  45969aca7d7850aa2fd1b1c3c03a65919effb899
- SHA256
  
  632afc11c1652f563a31015c766ce4d8f0d7ea34a5668511e7c08113e657cd3d
- SHA512
  
  c4d6b8aeb3397245591f2453ec0f4e55fd5333cb14b0c0fc82d0843cca925236a1143d52705cf2988580901e7bf122dc8c197da28c436fde633c244c127624c5
- SSDEEP
  
  768:JZiylKt1aCmWgYV6OZi/MiZHFPsxnEsJCSZbYvlGGooooizJjwRUT0v9S9HbExhI:JZigKtFIOZvGFPsxnEFWJjwGAv9KbExy
Score

10^/10

silverrat evasion execution ransomware trojan
- SilverRat
  SilverRat is trojan written in C#.
  trojan silverrat
- 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
- Command and Scripting Interpreter: PowerShell
  Using powershell.exe command.
  execution
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
  ransomware
behavioral1