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
841s -
max time network
842s -
platform
windows7_x64 -
resource
win7-20250207-ja -
resource tags
arch:x64arch:x86image:win7-20250207-jalocale:ja-jpos:windows7-x64systemwindows -
submitted
08/03/2025, 20:02
Behavioral task
behavioral1
Sample
BOB SILVER CLIENTS GO BRRRRR/V 10.exe
Resource
win7-20240903-ja
Behavioral task
behavioral2
Sample
BOB SILVER CLIENTS GO BRRRRR/V 10.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral3
Sample
BOB SILVER CLIENTS GO BRRRRR/V 11.exe
Resource
win7-20241023-ja
Behavioral task
behavioral4
Sample
BOB SILVER CLIENTS GO BRRRRR/V 11.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral5
Sample
BOB SILVER CLIENTS GO BRRRRR/V 12.exe
Resource
win7-20240903-ja
Behavioral task
behavioral6
Sample
BOB SILVER CLIENTS GO BRRRRR/V 12.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral7
Sample
BOB SILVER CLIENTS GO BRRRRR/V 13.exe
Resource
win7-20250207-ja
Behavioral task
behavioral8
Sample
BOB SILVER CLIENTS GO BRRRRR/V 13.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral9
Sample
BOB SILVER CLIENTS GO BRRRRR/V 14.exe
Resource
win7-20240903-ja
Behavioral task
behavioral10
Sample
BOB SILVER CLIENTS GO BRRRRR/V 14.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral11
Sample
BOB SILVER CLIENTS GO BRRRRR/V 15.exe
Resource
win7-20240903-ja
Behavioral task
behavioral12
Sample
BOB SILVER CLIENTS GO BRRRRR/V 15.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral13
Sample
BOB SILVER CLIENTS GO BRRRRR/V 16.exe
Resource
win7-20240903-ja
Behavioral task
behavioral14
Sample
BOB SILVER CLIENTS GO BRRRRR/V 16.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral15
Sample
BOB SILVER CLIENTS GO BRRRRR/V 17.exe
Resource
win7-20240903-ja
Behavioral task
behavioral16
Sample
BOB SILVER CLIENTS GO BRRRRR/V 17.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral17
Sample
BOB SILVER CLIENTS GO BRRRRR/V 18.exe
Resource
win7-20241010-ja
Behavioral task
behavioral18
Sample
BOB SILVER CLIENTS GO BRRRRR/V 18.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral19
Sample
BOB SILVER CLIENTS GO BRRRRR/V 19.exe
Resource
win7-20241010-ja
Behavioral task
behavioral20
Sample
BOB SILVER CLIENTS GO BRRRRR/V 19.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral21
Sample
BOB SILVER CLIENTS GO BRRRRR/V 2.exe
Resource
win7-20241010-ja
Behavioral task
behavioral22
Sample
BOB SILVER CLIENTS GO BRRRRR/V 2.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral23
Sample
BOB SILVER CLIENTS GO BRRRRR/V 20.exe
Resource
win7-20241023-ja
Behavioral task
behavioral24
Sample
BOB SILVER CLIENTS GO BRRRRR/V 20.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral25
Sample
BOB SILVER CLIENTS GO BRRRRR/V 21.exe
Resource
win7-20241010-ja
Behavioral task
behavioral26
Sample
BOB SILVER CLIENTS GO BRRRRR/V 21.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral27
Sample
BOB SILVER CLIENTS GO BRRRRR/V 22.exe
Resource
win7-20240903-ja
Behavioral task
behavioral28
Sample
BOB SILVER CLIENTS GO BRRRRR/V 22.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral29
Sample
BOB SILVER CLIENTS GO BRRRRR/V 23.exe
Resource
win7-20241010-ja
Behavioral task
behavioral30
Sample
BOB SILVER CLIENTS GO BRRRRR/V 23.exe
Resource
win10v2004-20250217-ja
Behavioral task
behavioral31
Sample
BOB SILVER CLIENTS GO BRRRRR/V 24.exe
Resource
win7-20241010-ja
Behavioral task
behavioral32
Sample
BOB SILVER CLIENTS GO BRRRRR/V 24.exe
Resource
win10v2004-20250217-ja
General
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Target
BOB SILVER CLIENTS GO BRRRRR/V 13.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 1924 attrib.exe 2284 attrib.exe -
Executes dropped EXE 1 IoCs
pid Process 2196 $77Runtime Broker.exe -
Loads dropped DLL 1 IoCs
pid Process 2956 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 13.exe -
pid Process 2592 powershell.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 3 discord.com 2 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 2152 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 1572 schtasks.exe 2352 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 1360 V 13.exe 1360 V 13.exe 1360 V 13.exe 2592 powershell.exe 2196 $77Runtime Broker.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeBackupPrivilege 2716 vssvc.exe Token: SeRestorePrivilege 2716 vssvc.exe Token: SeAuditPrivilege 2716 vssvc.exe Token: SeDebugPrivilege 1360 V 13.exe Token: SeDebugPrivilege 2196 $77Runtime Broker.exe Token: SeDebugPrivilege 2592 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2196 $77Runtime Broker.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1360 wrote to memory of 1924 1360 V 13.exe 34 PID 1360 wrote to memory of 1924 1360 V 13.exe 34 PID 1360 wrote to memory of 1924 1360 V 13.exe 34 PID 1360 wrote to memory of 2284 1360 V 13.exe 36 PID 1360 wrote to memory of 2284 1360 V 13.exe 36 PID 1360 wrote to memory of 2284 1360 V 13.exe 36 PID 1360 wrote to memory of 2956 1360 V 13.exe 38 PID 1360 wrote to memory of 2956 1360 V 13.exe 38 PID 1360 wrote to memory of 2956 1360 V 13.exe 38 PID 2956 wrote to memory of 2152 2956 cmd.exe 40 PID 2956 wrote to memory of 2152 2956 cmd.exe 40 PID 2956 wrote to memory of 2152 2956 cmd.exe 40 PID 2956 wrote to memory of 2196 2956 cmd.exe 41 PID 2956 wrote to memory of 2196 2956 cmd.exe 41 PID 2956 wrote to memory of 2196 2956 cmd.exe 41 PID 2196 wrote to memory of 1112 2196 $77Runtime Broker.exe 43 PID 2196 wrote to memory of 1112 2196 $77Runtime Broker.exe 43 PID 2196 wrote to memory of 1112 2196 $77Runtime Broker.exe 43 PID 2196 wrote to memory of 1572 2196 $77Runtime Broker.exe 45 PID 2196 wrote to memory of 1572 2196 $77Runtime Broker.exe 45 PID 2196 wrote to memory of 1572 2196 $77Runtime Broker.exe 45 PID 2196 wrote to memory of 492 2196 $77Runtime Broker.exe 47 PID 2196 wrote to memory of 492 2196 $77Runtime Broker.exe 47 PID 2196 wrote to memory of 492 2196 $77Runtime Broker.exe 47 PID 2196 wrote to memory of 2592 2196 $77Runtime Broker.exe 49 PID 2196 wrote to memory of 2592 2196 $77Runtime Broker.exe 49 PID 2196 wrote to memory of 2592 2196 $77Runtime Broker.exe 49 PID 2196 wrote to memory of 2352 2196 $77Runtime Broker.exe 51 PID 2196 wrote to memory of 2352 2196 $77Runtime Broker.exe 51 PID 2196 wrote to memory of 2352 2196 $77Runtime Broker.exe 51 -
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 1924 attrib.exe 2284 attrib.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\BOB SILVER CLIENTS GO BRRRRR\V 13.exe"C:\Users\Admin\AppData\Local\Temp\BOB SILVER CLIENTS GO BRRRRR\V 13.exe"1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1360 -
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:1924
-
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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:2284
-
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB24F.tmp.bat""2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2956 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:2152
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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:2196 -
C:\Windows\system32\schtasks.exe"schtasks.exe" /query /TN $77Runtime Broker.exe4⤵PID:1112
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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:1572
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C:\Windows\system32\schtasks.exe"schtasks.exe" /query /TN $77Runtime Broker.exe4⤵PID:492
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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:2592
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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:2352
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2716
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
MD52be2b3529e40b300a63c76aad1b876e0
SHA1a46b015fcc32b794a85eb86d4bc5a336563051c6
SHA256bd9f78b98d6e6e3f4a7c0198d6e10019f504d692fb9b5c6d581252230ee0579e
SHA512ad76fe948d64a12c4f4c45b76ca1e35efb8221379c9db402fa39f427ebe04244fa5ba87becf1c5a64b59c8dfda599be5ef03b3c18eda3b0c8c3a4b7cf0e97c5e
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Filesize
45KB
MD51cf8d6e0acaa084d9b4201f11a1a04a8
SHA17cc576ff7a096e14a6e83836bfd3cd29f7164392
SHA256c7c78f431c21c05d2963fb7635b73d969b7dada294252ef1d2b634b030a2375f
SHA512de6889cffba397b9a95b02d3271b14c9abbe543fb2a4415182cb24e9a3cf152bfb1ae5d3237eacac613f411fc278d120191f45c5cb1c4ca5135f393b57c0527a