General
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Target
uicleaner.rar
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Size
21KB
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Sample
241205-3jkftsxqay
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MD5
21ce089b73abfe627964101cb3e90750
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SHA1
9ef3491cb54b2369715b5c553e8fbed7b4f8c97b
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SHA256
e40efe97ccad1bbdbb23f174021b1f09337120467683c1a43ec242c1bd05fd34
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SHA512
889485a5f74894996bf8fcc989743946c7e04cd685f6a4d7a534ebf2940c3a73b76b61950902cfc42b14dfcf09793f326eaa94bb11012986739d82a938a40a30
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SSDEEP
384:DQI8L1sz1AnrgtkbXyzuKc3+sl3V0gNCkE68NyU+wnp91+AUyagq5a:sjCJAnrD+PcV0xr68vTQAF3
Malware Config
Extracted
silverrat
1.0.0.0
127.0.0.1:9999
SilverMutex_DAwTXvYWLg
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certificate
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decrypted_key
-|S.S.S|-
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discord
https://discordapp.com/api/webhooks/1314081482104639619/D3vzl80TdaZVHZuQw9rLYcGF2kBI8FG0yEJRwv1f5fqnIFQfa5M6ytSzp8W_y6wubrZ2
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key
yy6zDjAUmbB09pKvo5Hhug==
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key_x509
UlR1VG5kZ1RqUVhUZFlsTnNEeVRJVERsY3lSU09I
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payload_url
https://g.top4top.io/p_2522c7w8u1.png
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reconnect_delay
4
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server_signature
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
Targets
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Target
uicleaner.exe
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Size
44KB
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MD5
4ca3da3c637adf451703cb56c87ba7aa
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SHA1
7ce385bb7f8cbc50172620edf6602b8e509a6baa
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SHA256
5d69607e90c0f0903ce58cec6d7ac63580bd96b3df2ed4fe822c5402b1a571e4
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SHA512
bbd8bf79f30ba1e033c272f50f2555aab13b8a2b2a39f54fef831b76ea2972e15866a97a51a7621a9016ede141b4d6e3af210f7b4bfea840370460879cf444a1
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SSDEEP
768:edY/02ytTzDoX6KS1BVW8oWERULQqV9hL1OB6SnPv6/xJ:edM0n9KSoiEGsE9ioyPS/xJ
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Silverrat family
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Downloads MZ/PE file
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A potential corporate email address has been identified in the URL: =@L
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
2Hidden Files and Directories
2Modify Registry
1