silverrat

General

Target

7935b11931c6b3309bba5ebc013d826a694aae29b1a611003af62f4337fc98ac.exe
Size

41KB
Sample

250201-yk1f8ayqfk
MD5

5eba805a50032778522fd8d48ac974c5
SHA1

2d04750a82759c60d85d5a8331ae2734b9fc5814
SHA256

7935b11931c6b3309bba5ebc013d826a694aae29b1a611003af62f4337fc98ac
SHA512

d82b874adc774b1828d97026aba6bbc0f11b3354638e1db338b86f6edd486704d9eb5dec4408d196de4ad966ef75af0503a052681524f2b825416da3103809e4
SSDEEP

768:TauFSC/O0qAtH0gLV0DG9FY5RUb0eGj9xRqZB6SOWkEY:TpEaLODG9FSGIT9xSoXWkEY

Score

10^/10

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

simple-insurance.gl.at.ply.gg:52206

Mutex

SilverMutex_eCJcVEhVqR

Attributes

certificate
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
decrypted_key
-|S.S.S|-
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
a09HQW15cnhCeGFOZEhSYWlMRVBab3N3T3BGVGVh
reconnect_delay
4
server_signature
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

Targets

- Target
  
  7935b11931c6b3309bba5ebc013d826a694aae29b1a611003af62f4337fc98ac.exe
- Size
  
  41KB
- MD5
  
  5eba805a50032778522fd8d48ac974c5
- SHA1
  
  2d04750a82759c60d85d5a8331ae2734b9fc5814
- SHA256
  
  7935b11931c6b3309bba5ebc013d826a694aae29b1a611003af62f4337fc98ac
- SHA512
  
  d82b874adc774b1828d97026aba6bbc0f11b3354638e1db338b86f6edd486704d9eb5dec4408d196de4ad966ef75af0503a052681524f2b825416da3103809e4
- SSDEEP
  
  768:TauFSC/O0qAtH0gLV0DG9FY5RUb0eGj9xRqZB6SOWkEY:TpEaLODG9FSGIT9xSoXWkEY
Score

10^/10

silverrat defense_evasion persistence 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.
  defense_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
behavioral1 behavioral2