silverrat

General

Target

SilverClient.exe
Size

44KB
Sample

241127-2s5mpatrav
MD5

73da3b5354e231ee5b518758a190ced6
SHA1

a1d5ce5fa7721870a7500eb40337fc56cf72d7e2
SHA256

1ade996dd1fc081601f3ab8befa1307f908499e4bde9968f12ab39dc85ad74ad
SHA512

069a553b74b36251e860b2992ef5688418e022f173fbece7778e14066f4eee030669ecf6b5c1ea96225ec768da0b729306fc51d711dfd30fdf91450a8e1c97f4
SSDEEP

768:JX8w9gjLHx+6AHOTVR/Z5WIRULQeq9hLiuB6SyDADv+/nU:JMw4tAar/Z5zGsr9loJAD2/nU

Score

10^/10

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

FBIInvestigation-41427.portmap.host:41427

Mutex

xhhCQtIByF

Attributes

certificate
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
decrypted_key
-|S.S.S|-
discord
https://discord.com/api/webhooks/1307565058028736522/BvuPOnvMCGBluGhgPBunWxSW6sccMPE50iCM97Bct0vExaNkF3__xy6dkdmzHQG2t597
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
RFNmZ1JPaXBaQXBxS05BdUdsQWNWU0VHREZSbmRK
payload_url
https://g.top4top.io/p_2522c7w8u1.png
reconnect_delay
4
server_signature
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

Targets

- Target
  
  SilverClient.exe
- Size
  
  44KB
- MD5
  
  73da3b5354e231ee5b518758a190ced6
- SHA1
  
  a1d5ce5fa7721870a7500eb40337fc56cf72d7e2
- SHA256
  
  1ade996dd1fc081601f3ab8befa1307f908499e4bde9968f12ab39dc85ad74ad
- SHA512
  
  069a553b74b36251e860b2992ef5688418e022f173fbece7778e14066f4eee030669ecf6b5c1ea96225ec768da0b729306fc51d711dfd30fdf91450a8e1c97f4
- SSDEEP
  
  768:JX8w9gjLHx+6AHOTVR/Z5WIRULQeq9hLiuB6SyDADv+/nU:JMw4tAar/Z5zGsr9loJAD2/nU
Score

10^/10

silverrat 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.
  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
- Legitimate hosting services abused for malware hosting/C2
behavioral1 behavioral2