Analysis
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max time kernel
65s -
max time network
67s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22-11-2024 02:24
Behavioral task
behavioral1
Sample
SilverRat.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
SilverRat.exe
Resource
win10v2004-20241007-en
General
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Target
SilverRat.exe
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Size
45KB
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MD5
545d64cc91e4da6339a70d54a2443c5d
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SHA1
f03344ab824c7cf0f73dcc86aa34cab36e2e54e7
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SHA256
04109cb3426408945bea79e8e355285fb5bf93224b5b2775a5f6ff6c1e992b5f
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SHA512
733154a7f76840fad3ead2af149cf708807878ef3f08c62232ee3cdc0b7e6a4b4dc338103569daf9f755a6549475df15b34b7f223929348001d4086e83371681
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SSDEEP
768:OarX4D9pmZGOXnXhEk75rVeZtxbuRULQj9SEQf9B6SbuDFvr1/xf:OarID9pVU5rVe3xCGsj9O9oQ2Fx/xf
Malware Config
Extracted
silverrat
1.0.0.0
auto-london.gl.at.ply.gg:51655
SilverMutex_kTAAZjMenK
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certificate
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decrypted_key
-|S.S.S|-
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discord
https://discord.com/api/webhooks/1253749007772160090/mxExcAUGlJgTCbYOk_u7JJAnNpsIhMne5e0PjqkRY2MV_40Bgpix2Ezib84aFxRmN66j
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key
yy6zDjAUmbB09pKvo5Hhug==
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key_x509
QnZ2VW1rTFlUa09ESXhCRkdHYURSSlBBdk5SQk5J
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payload_url
https://g.top4top.io/p_2522c7w8u1.png
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reconnect_delay
0
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server_signature
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
Signatures
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Silverrat family
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Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 3752 attrib.exe 4292 attrib.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation SilverRat.exe Key value queried \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation $77Runtime Broker.exe -
Executes dropped EXE 1 IoCs
pid Process 2752 $77Runtime Broker.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\hgfdfd\\$77Runtime Broker.exe\"" SilverRat.exe -
pid Process 2676 powershell.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 22 discord.com 23 discord.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 2788 timeout.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4556 schtasks.exe 4924 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 376 SilverRat.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 2676 powershell.exe 2676 powershell.exe 2752 $77Runtime Broker.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
description pid Process Token: SeBackupPrivilege 4900 vssvc.exe Token: SeRestorePrivilege 4900 vssvc.exe Token: SeAuditPrivilege 4900 vssvc.exe Token: SeDebugPrivilege 376 SilverRat.exe Token: SeDebugPrivilege 5080 taskmgr.exe Token: SeSystemProfilePrivilege 5080 taskmgr.exe Token: SeCreateGlobalPrivilege 5080 taskmgr.exe Token: SeDebugPrivilege 2752 $77Runtime Broker.exe Token: SeDebugPrivilege 2676 powershell.exe -
Suspicious use of FindShellTrayWindow 64 IoCs
pid Process 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe -
Suspicious use of SendNotifyMessage 63 IoCs
pid Process 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe 5080 taskmgr.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2752 $77Runtime Broker.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 376 wrote to memory of 3752 376 SilverRat.exe 87 PID 376 wrote to memory of 3752 376 SilverRat.exe 87 PID 376 wrote to memory of 4292 376 SilverRat.exe 89 PID 376 wrote to memory of 4292 376 SilverRat.exe 89 PID 376 wrote to memory of 2024 376 SilverRat.exe 107 PID 376 wrote to memory of 2024 376 SilverRat.exe 107 PID 2024 wrote to memory of 2788 2024 cmd.exe 109 PID 2024 wrote to memory of 2788 2024 cmd.exe 109 PID 2024 wrote to memory of 2752 2024 cmd.exe 110 PID 2024 wrote to memory of 2752 2024 cmd.exe 110 PID 2752 wrote to memory of 4596 2752 $77Runtime Broker.exe 112 PID 2752 wrote to memory of 4596 2752 $77Runtime Broker.exe 112 PID 2752 wrote to memory of 4556 2752 $77Runtime Broker.exe 114 PID 2752 wrote to memory of 4556 2752 $77Runtime Broker.exe 114 PID 2752 wrote to memory of 804 2752 $77Runtime Broker.exe 116 PID 2752 wrote to memory of 804 2752 $77Runtime Broker.exe 116 PID 2752 wrote to memory of 2676 2752 $77Runtime Broker.exe 118 PID 2752 wrote to memory of 2676 2752 $77Runtime Broker.exe 118 PID 2752 wrote to memory of 4924 2752 $77Runtime Broker.exe 119 PID 2752 wrote to memory of 4924 2752 $77Runtime Broker.exe 119 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
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Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 3752 attrib.exe 4292 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\SilverRat.exe"C:\Users\Admin\AppData\Local\Temp\SilverRat.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:376 -
C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd"2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3752
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C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe"2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4292
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF0A9.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:2788
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2752 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks.exe" /query /TN $77Runtime Broker.exe4⤵PID:4596
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C:\Windows\SYSTEM32\schtasks.exe"schtasks.exe" /Create /SC ONCE /TN "$77Runtime Broker.exe" /TR "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe \"\$77Runtime Broker.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST4⤵
- Scheduled Task/Job: Scheduled Task
PID:4556
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C:\Windows\SYSTEM32\schtasks.exe"schtasks.exe" /query /TN $77Runtime Broker.exe4⤵PID:804
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2676
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /sc hourly /mo 1 /tn "Runtime Broker_Task-HOURLY-01" /tr "%MyFile%" /st 00:004⤵
- Scheduled Task/Job: Scheduled Task
PID:4924
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4900
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:5080
Network
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
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
196B
MD52ecb21ba941b9b605952432cafb6d0d7
SHA1429478a2e504425bb53c918b4acce8cbcd03beb7
SHA2561b679c356394d4ff512012c37c4bf7257b14bbc5a7e3c9b4ebb88abf14a9bf1c
SHA51268939b8d0f1152fe8bd56fa4469d04b4d08d10ee640ba62c2dbc9d20d6ae0ab42a21540f62c3402efb08a1fe6db0c674c50cd0b7aa1f5d6bdb66a24261c6673f
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Filesize
45KB
MD5545d64cc91e4da6339a70d54a2443c5d
SHA1f03344ab824c7cf0f73dcc86aa34cab36e2e54e7
SHA25604109cb3426408945bea79e8e355285fb5bf93224b5b2775a5f6ff6c1e992b5f
SHA512733154a7f76840fad3ead2af149cf708807878ef3f08c62232ee3cdc0b7e6a4b4dc338103569daf9f755a6549475df15b34b7f223929348001d4086e83371681