silverrat

General

Target

Silver Rat.7z
Size

10.5MB
Sample

250312-x9wznaz1cv
MD5

94306cf12778c76e530c99a79ffbf155
SHA1

78ff9ae383665885d4c484c225e8db093f379273
SHA256

3fce4b5d26887b84f5f9081fb4b26fc8d8a28bd4e44cc5b7d4f94f1407d4a1e6
SHA512

91a4bec7c0cf86c935fa182f1bed613389fa6250675e31d262e2ae2e90b61b4d15f0045c9562615c43bba8e057a7bcd52d98ec06109f935d7e8dce02c0d3b734
SSDEEP

196608:cEqZUYyeiDxFBVwSfSjR4FaVrVqtnBET7erfudD46RqhzXog4pVFArDdUkL3tmmU:cEqN0DzjfiVBqV+ves4aAog4KdUkLFB6

Score

10^/10

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

127.0.0.1:4782

Mutex

lAxDBRhAFu

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
eHdEYm50bUx0RFJwWE9jRE5BSVR1WVFCVG1JZkxE
reconnect_delay
4
server_signature
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

Targets

- Target
  
  Silver Rat.7z
- Size
  
  10.5MB
- MD5
  
  94306cf12778c76e530c99a79ffbf155
- SHA1
  
  78ff9ae383665885d4c484c225e8db093f379273
- SHA256
  
  3fce4b5d26887b84f5f9081fb4b26fc8d8a28bd4e44cc5b7d4f94f1407d4a1e6
- SHA512
  
  91a4bec7c0cf86c935fa182f1bed613389fa6250675e31d262e2ae2e90b61b4d15f0045c9562615c43bba8e057a7bcd52d98ec06109f935d7e8dce02c0d3b734
- SSDEEP
  
  196608:cEqZUYyeiDxFBVwSfSjR4FaVrVqtnBET7erfudD46RqhzXog4pVFArDdUkL3tmmU:cEqN0DzjfiVBqV+ves4aAog4KdUkLFB6
Score

10^/10

silverrat agilenet discovery persistence trojan
- SilverRat
  SilverRat is trojan written in C#.
  trojan silverrat
- Silverrat family
  silverrat
- Boot or Logon Autostart Execution: Active Setup
  Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
  persistence
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- Loads dropped DLL
- Obfuscated with Agile.Net obfuscator
  Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
  agilenet
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
behavioral1 behavioral2