Overview
overview
10Static
static
10BOB SILVER...10.exe
windows7-x64
10BOB SILVER...10.exe
windows10-2004-x64
10BOB SILVER...11.exe
windows7-x64
10BOB SILVER...11.exe
windows10-2004-x64
10BOB SILVER...12.exe
windows7-x64
10BOB SILVER...12.exe
windows10-2004-x64
10BOB SILVER...13.exe
windows7-x64
10BOB SILVER...13.exe
windows10-2004-x64
10BOB SILVER...14.exe
windows7-x64
10BOB SILVER...14.exe
windows10-2004-x64
10BOB SILVER...15.exe
windows7-x64
10BOB SILVER...15.exe
windows10-2004-x64
10BOB SILVER...16.exe
windows7-x64
10BOB SILVER...16.exe
windows10-2004-x64
10BOB SILVER...17.exe
windows7-x64
10BOB SILVER...17.exe
windows10-2004-x64
10BOB SILVER...18.exe
windows7-x64
10BOB SILVER...18.exe
windows10-2004-x64
10BOB SILVER...19.exe
windows7-x64
10BOB SILVER...19.exe
windows10-2004-x64
10BOB SILVER... 2.exe
windows7-x64
10BOB SILVER... 2.exe
windows10-2004-x64
10BOB SILVER...20.exe
windows7-x64
10BOB SILVER...20.exe
windows10-2004-x64
10BOB SILVER...21.exe
windows7-x64
10BOB SILVER...21.exe
windows10-2004-x64
10BOB SILVER...22.exe
windows7-x64
10BOB SILVER...22.exe
windows10-2004-x64
10BOB SILVER...23.exe
windows7-x64
10BOB SILVER...23.exe
windows10-2004-x64
10BOB SILVER...24.exe
windows7-x64
10BOB SILVER...24.exe
windows10-2004-x64
10Analysis
-
max time kernel
120s -
max time network
131s -
platform
windows7_x64 -
resource
win7-20250207-en -
resource tags
arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system -
submitted
08/03/2025, 20:09
Behavioral task
behavioral1
Sample
BOB SILVER CLIENTS GO BRRRRR/V 10.exe
Resource
win7-20250207-en
Behavioral task
behavioral2
Sample
BOB SILVER CLIENTS GO BRRRRR/V 10.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral3
Sample
BOB SILVER CLIENTS GO BRRRRR/V 11.exe
Resource
win7-20240903-en
Behavioral task
behavioral4
Sample
BOB SILVER CLIENTS GO BRRRRR/V 11.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral5
Sample
BOB SILVER CLIENTS GO BRRRRR/V 12.exe
Resource
win7-20241023-en
Behavioral task
behavioral6
Sample
BOB SILVER CLIENTS GO BRRRRR/V 12.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral7
Sample
BOB SILVER CLIENTS GO BRRRRR/V 13.exe
Resource
win7-20240729-en
Behavioral task
behavioral8
Sample
BOB SILVER CLIENTS GO BRRRRR/V 13.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral9
Sample
BOB SILVER CLIENTS GO BRRRRR/V 14.exe
Resource
win7-20240903-en
Behavioral task
behavioral10
Sample
BOB SILVER CLIENTS GO BRRRRR/V 14.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral11
Sample
BOB SILVER CLIENTS GO BRRRRR/V 15.exe
Resource
win7-20240903-en
Behavioral task
behavioral12
Sample
BOB SILVER CLIENTS GO BRRRRR/V 15.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral13
Sample
BOB SILVER CLIENTS GO BRRRRR/V 16.exe
Resource
win7-20240903-en
Behavioral task
behavioral14
Sample
BOB SILVER CLIENTS GO BRRRRR/V 16.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral15
Sample
BOB SILVER CLIENTS GO BRRRRR/V 17.exe
Resource
win7-20240903-en
Behavioral task
behavioral16
Sample
BOB SILVER CLIENTS GO BRRRRR/V 17.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral17
Sample
BOB SILVER CLIENTS GO BRRRRR/V 18.exe
Resource
win7-20240729-en
Behavioral task
behavioral18
Sample
BOB SILVER CLIENTS GO BRRRRR/V 18.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral19
Sample
BOB SILVER CLIENTS GO BRRRRR/V 19.exe
Resource
win7-20240903-en
Behavioral task
behavioral20
Sample
BOB SILVER CLIENTS GO BRRRRR/V 19.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral21
Sample
BOB SILVER CLIENTS GO BRRRRR/V 2.exe
Resource
win7-20240903-en
Behavioral task
behavioral22
Sample
BOB SILVER CLIENTS GO BRRRRR/V 2.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral23
Sample
BOB SILVER CLIENTS GO BRRRRR/V 20.exe
Resource
win7-20240903-en
Behavioral task
behavioral24
Sample
BOB SILVER CLIENTS GO BRRRRR/V 20.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral25
Sample
BOB SILVER CLIENTS GO BRRRRR/V 21.exe
Resource
win7-20250207-en
Behavioral task
behavioral26
Sample
BOB SILVER CLIENTS GO BRRRRR/V 21.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral27
Sample
BOB SILVER CLIENTS GO BRRRRR/V 22.exe
Resource
win7-20241023-en
Behavioral task
behavioral28
Sample
BOB SILVER CLIENTS GO BRRRRR/V 22.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral29
Sample
BOB SILVER CLIENTS GO BRRRRR/V 23.exe
Resource
win7-20240903-en
Behavioral task
behavioral30
Sample
BOB SILVER CLIENTS GO BRRRRR/V 23.exe
Resource
win10v2004-20250217-en
Behavioral task
behavioral31
Sample
BOB SILVER CLIENTS GO BRRRRR/V 24.exe
Resource
win7-20240729-en
Behavioral task
behavioral32
Sample
BOB SILVER CLIENTS GO BRRRRR/V 24.exe
Resource
win10v2004-20250217-en
General
-
Target
BOB SILVER CLIENTS GO BRRRRR/V 10.exe
-
Size
45KB
-
MD5
1cf8d6e0acaa084d9b4201f11a1a04a8
-
SHA1
7cc576ff7a096e14a6e83836bfd3cd29f7164392
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SHA256
c7c78f431c21c05d2963fb7635b73d969b7dada294252ef1d2b634b030a2375f
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SHA512
de6889cffba397b9a95b02d3271b14c9abbe543fb2a4415182cb24e9a3cf152bfb1ae5d3237eacac613f411fc278d120191f45c5cb1c4ca5135f393b57c0527a
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SSDEEP
768:iqzAMCV2799XtzcyyMjtjRULQD9PpnUz1QB6S9RVvr0/bE:iqzAM8qfzcMjGsD9K1QoyRVA/bE
Malware Config
Extracted
silverrat
1.0.0.0
if-eventually.gl.at.ply.gg:17094
lAxDBRhAFu
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certificate
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decrypted_key
-|S.S.S|-
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discord
https://discord.com/api/webhooks/1335679503938355221/lGcOUDspps04wapqxq013W8uYGPSCcmnxl9Q1xnWdBn45Ul8QBT-Qs2mjsdVNXfOtTCe
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key
yy6zDjAUmbB09pKvo5Hhug==
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key_x509
b0FGeVZNcFRMWVloVHR6Z0VESU5RdlpZUmxZbUFE
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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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
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 1692 attrib.exe 2580 attrib.exe -
Executes dropped EXE 1 IoCs
pid Process 1316 $77Runtime Broker.exe -
Loads dropped DLL 1 IoCs
pid Process 1836 cmd.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\\WinTask\\$77Runtime Broker.exe\"" V 10.exe -
pid Process 1812 powershell.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 4 discord.com 5 discord.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Delays execution with timeout.exe 1 IoCs
pid Process 3000 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 2256 schtasks.exe 2536 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2412 V 10.exe 2412 V 10.exe 2412 V 10.exe 1812 powershell.exe 1316 $77Runtime Broker.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeBackupPrivilege 3032 vssvc.exe Token: SeRestorePrivilege 3032 vssvc.exe Token: SeAuditPrivilege 3032 vssvc.exe Token: SeDebugPrivilege 2412 V 10.exe Token: SeDebugPrivilege 1316 $77Runtime Broker.exe Token: SeDebugPrivilege 1812 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1316 $77Runtime Broker.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2412 wrote to memory of 1692 2412 V 10.exe 34 PID 2412 wrote to memory of 1692 2412 V 10.exe 34 PID 2412 wrote to memory of 1692 2412 V 10.exe 34 PID 2412 wrote to memory of 2580 2412 V 10.exe 36 PID 2412 wrote to memory of 2580 2412 V 10.exe 36 PID 2412 wrote to memory of 2580 2412 V 10.exe 36 PID 2412 wrote to memory of 1836 2412 V 10.exe 39 PID 2412 wrote to memory of 1836 2412 V 10.exe 39 PID 2412 wrote to memory of 1836 2412 V 10.exe 39 PID 1836 wrote to memory of 3000 1836 cmd.exe 41 PID 1836 wrote to memory of 3000 1836 cmd.exe 41 PID 1836 wrote to memory of 3000 1836 cmd.exe 41 PID 1836 wrote to memory of 1316 1836 cmd.exe 42 PID 1836 wrote to memory of 1316 1836 cmd.exe 42 PID 1836 wrote to memory of 1316 1836 cmd.exe 42 PID 1316 wrote to memory of 2176 1316 $77Runtime Broker.exe 44 PID 1316 wrote to memory of 2176 1316 $77Runtime Broker.exe 44 PID 1316 wrote to memory of 2176 1316 $77Runtime Broker.exe 44 PID 1316 wrote to memory of 2536 1316 $77Runtime Broker.exe 46 PID 1316 wrote to memory of 2536 1316 $77Runtime Broker.exe 46 PID 1316 wrote to memory of 2536 1316 $77Runtime Broker.exe 46 PID 1316 wrote to memory of 2228 1316 $77Runtime Broker.exe 48 PID 1316 wrote to memory of 2228 1316 $77Runtime Broker.exe 48 PID 1316 wrote to memory of 2228 1316 $77Runtime Broker.exe 48 PID 1316 wrote to memory of 1812 1316 $77Runtime Broker.exe 50 PID 1316 wrote to memory of 1812 1316 $77Runtime Broker.exe 50 PID 1316 wrote to memory of 1812 1316 $77Runtime Broker.exe 50 PID 1316 wrote to memory of 2256 1316 $77Runtime Broker.exe 52 PID 1316 wrote to memory of 2256 1316 $77Runtime Broker.exe 52 PID 1316 wrote to memory of 2256 1316 $77Runtime Broker.exe 52 -
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 2580 attrib.exe 1692 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\BOB SILVER CLIENTS GO BRRRRR\V 10.exe"C:\Users\Admin\AppData\Local\Temp\BOB SILVER CLIENTS GO BRRRRR\V 10.exe"1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2412 -
C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\WinTask"2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1692
-
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C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\WinTask\$77Runtime Broker.exe"2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2580
-
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1C47.tmp.bat""2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1836 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:3000
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\WinTask\$77Runtime Broker.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\WinTask\$77Runtime Broker.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1316 -
C:\Windows\system32\schtasks.exe"schtasks.exe" /query /TN $77Runtime Broker.exe4⤵PID:2176
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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\WinTask\$77Runtime Broker.exe \"\$77Runtime Broker.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST4⤵
- Scheduled Task/Job: Scheduled Task
PID:2536
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C:\Windows\system32\schtasks.exe"schtasks.exe" /query /TN $77Runtime Broker.exe4⤵PID:2228
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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:1812
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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:2256
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3032
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
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
197B
MD5736f7afd9be4ac564ddccfae4273d570
SHA10cda65356c86ad551e2fb09ee583f08cfffb7670
SHA2565e407ff387c6ce798a15686226721b840617b837bfb54ac02bb242fb1a9b3eba
SHA512e5498e8462b333a04cedc9e7cb725423dbcf2ad8e6eedf48b103bedb9343938af7be42482ded4ec6d5b87bc97bd1335a2f6a9004b06bbbe054e3ccec3bbab2fe
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Filesize
45KB
MD51cf8d6e0acaa084d9b4201f11a1a04a8
SHA17cc576ff7a096e14a6e83836bfd3cd29f7164392
SHA256c7c78f431c21c05d2963fb7635b73d969b7dada294252ef1d2b634b030a2375f
SHA512de6889cffba397b9a95b02d3271b14c9abbe543fb2a4415182cb24e9a3cf152bfb1ae5d3237eacac613f411fc278d120191f45c5cb1c4ca5135f393b57c0527a