Analysis Overview
SHA256
df9fc08c25a7e1e6578a2a3a89d6c40210164f8090733a7b42c7b013b156eeef
Threat Level: Known bad
The file SilverClient.exe was found to be: Known bad.
Malicious Activity Summary
SilverRat
Silverrat family
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-02-23 15:37
Signatures
Silverrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-23 15:37
Reported
2025-02-23 15:39
Platform
win7-20240903-en
Max time kernel
147s
Max time network
149s
Command Line
Signatures
SilverRat
Silverrat family
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1628 wrote to memory of 1592 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1628 wrote to memory of 1592 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1628 wrote to memory of 1592 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1628 wrote to memory of 2572 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\schtasks.exe |
| PID 1628 wrote to memory of 2572 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\schtasks.exe |
| PID 1628 wrote to memory of 2572 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\SilverClient.exe
"C:\Users\Admin\AppData\Local\Temp\SilverClient.exe"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc daily /tn "_Task-DAILY-21PM" /TR "%MyFile%" /ST 21:00
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | paul-nw.gl.at.ply.gg | udp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
Files
memory/1628-0-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp
memory/1628-1-0x000000013F860000-0x000000013F86E000-memory.dmp
memory/1628-2-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp
memory/1592-7-0x000000001B500000-0x000000001B7E2000-memory.dmp
memory/1592-8-0x00000000022D0000-0x00000000022D8000-memory.dmp
memory/1628-9-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp
memory/1628-10-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-23 15:37
Reported
2025-02-23 15:40
Platform
win10v2004-20250217-en
Max time kernel
146s
Max time network
150s
Command Line
Signatures
SilverRat
Silverrat family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | N/A |
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1520 wrote to memory of 5076 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1520 wrote to memory of 5076 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1520 wrote to memory of 220 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\schtasks.exe |
| PID 1520 wrote to memory of 220 | N/A | C:\Users\Admin\AppData\Local\Temp\SilverClient.exe | C:\Windows\System32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\SilverClient.exe
"C:\Users\Admin\AppData\Local\Temp\SilverClient.exe"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc daily /tn "_Task-DAILY-21PM" /TR "%MyFile%" /ST 21:00
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | paul-nw.gl.at.ply.gg | udp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
| US | 147.185.221.25:51413 | paul-nw.gl.at.ply.gg | tcp |
Files
memory/1520-0-0x00007FFD66933000-0x00007FFD66935000-memory.dmp
memory/1520-1-0x0000000000550000-0x000000000055E000-memory.dmp
memory/1520-2-0x00007FFD66930000-0x00007FFD673F1000-memory.dmp
memory/5076-3-0x00007FFD66930000-0x00007FFD673F1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hjohnzro.thj.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/5076-14-0x00007FFD66930000-0x00007FFD673F1000-memory.dmp
memory/5076-13-0x000001F35B880000-0x000001F35B8A2000-memory.dmp
memory/5076-15-0x00007FFD66930000-0x00007FFD673F1000-memory.dmp
memory/5076-18-0x000001F373D30000-0x000001F373F4C000-memory.dmp
memory/5076-19-0x00007FFD66930000-0x00007FFD673F1000-memory.dmp
memory/1520-20-0x00007FFD66933000-0x00007FFD66935000-memory.dmp
memory/1520-21-0x00007FFD66930000-0x00007FFD673F1000-memory.dmp