Analysis Overview
SHA256
ab51ee1b9d05629f8756c9d552a2e182f6273c34a9cb052e9ba5338667bc5a97
Threat Level: Known bad
The file SilverClient.exe was found to be: Known bad.
Malicious Activity Summary
SilverRat
Silverrat family
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Legitimate hosting services abused for malware hosting/C2
Command and Scripting Interpreter: PowerShell
Unsigned PE
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-02-26 06:37
Signatures
Silverrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 06:37
Reported
2025-02-26 06:39
Platform
win7-20250207-en
Max time kernel
149s
Max time network
118s
Command Line
Signatures
SilverRat
Silverrat family
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\HP_Drivers\HP_Updates.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\cmd.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 |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | discord.com | N/A | N/A |
| N/A | discord.com | N/A | N/A |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
| 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:\Users\Admin\AppData\Local\Temp\SilverClient.exe | N/A |
| 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:\Users\Admin\HP_Drivers\HP_Updates.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:\Users\Admin\HP_Drivers\HP_Updates.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\HP_Drivers\HP_Updates.exe | N/A |
Suspicious use of WriteProcessMemory
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\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC0B0.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
C:\Users\Admin\HP_Drivers\HP_Updates.exe
"C:\Users\Admin\HP_Drivers\HP_Updates.exe"
C:\Windows\system32\schtasks.exe
"schtasks.exe" /query /TN HP_Updates.exe
C:\Windows\system32\schtasks.exe
"schtasks.exe" /Create /SC ONCE /TN "HP_Updates.exe" /TR "C:\Users\Admin\HP_Drivers\HP_Updates.exe \"\HP_Updates.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
C:\Windows\system32\schtasks.exe
"schtasks.exe" /query /TN HP_Updates.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 hourly /mo 1 /tn "HP_Updates_Task-HOURLY-01" /tr "%MyFile%" /st 00:00
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | discord.com | udp |
| US | 162.159.128.233:443 | discord.com | tcp |
Files
memory/1904-0-0x000007FEF5B93000-0x000007FEF5B94000-memory.dmp
memory/1904-1-0x000000013F870000-0x000000013F880000-memory.dmp
memory/1904-10-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpC0B0.tmp.bat
| MD5 | f123210cf2fb1938b3d9e35cddf1d646 |
| SHA1 | 1711ece76b142dd2a7d0f2e14fe9fbe84baea05d |
| SHA256 | 837c506ae05b7bacd9070e87dad680e54abe86b45c3b0396cf1eb7981fd9abd1 |
| SHA512 | 6437aa664aa57483a12bbaf88587480a56119d156f1968ceef57b429168fbb2fdb3f93ae73c62f512dbb9de58ba763c041dcf2047e4c09a97ee58c0253900fa2 |
\Users\Admin\HP_Drivers\HP_Updates.exe
| MD5 | c312ff9dfd199ae5b504932e018b4d84 |
| SHA1 | 75ff47cc5fb04726d14df93b9c8804360a74f4ad |
| SHA256 | ab51ee1b9d05629f8756c9d552a2e182f6273c34a9cb052e9ba5338667bc5a97 |
| SHA512 | 94a1e811451022abc9e408c5ede051d9656ce74383455b3ecb897dba9c1abf1bac21447b42ece811845271639de201d780b9aaab594615636fc59538be3684a7 |
memory/2212-16-0x000000013FDA0000-0x000000013FDB0000-memory.dmp
memory/2212-17-0x000007FEF51A0000-0x000007FEF5B8C000-memory.dmp
memory/2708-22-0x000000001B580000-0x000000001B862000-memory.dmp
memory/2708-23-0x00000000027F0000-0x00000000027F8000-memory.dmp
memory/1904-24-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
memory/2212-25-0x000007FEF51A3000-0x000007FEF51A4000-memory.dmp
memory/2212-26-0x000007FEF51A0000-0x000007FEF5B8C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 06:37
Reported
2025-02-26 06:40
Platform
win10v2004-20250217-en
Max time kernel
148s
Max time network
151s
Command Line
Signatures
SilverRat
Silverrat family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\HP_Drivers\HP_Updates.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\HP_Drivers\HP_Updates.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 |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | discord.com | N/A | N/A |
| N/A | discord.com | N/A | N/A |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
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:\Users\Admin\HP_Drivers\HP_Updates.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\HP_Drivers\HP_Updates.exe | N/A |
Suspicious use of WriteProcessMemory
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\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD9D5.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
C:\Users\Admin\HP_Drivers\HP_Updates.exe
"C:\Users\Admin\HP_Drivers\HP_Updates.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /query /TN HP_Updates.exe
C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /Create /SC ONCE /TN "HP_Updates.exe" /TR "C:\Users\Admin\HP_Drivers\HP_Updates.exe \"\HP_Updates.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /query /TN HP_Updates.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 hourly /mo 1 /tn "HP_Updates_Task-HOURLY-01" /tr "%MyFile%" /st 00:00
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | discord.com | udp |
| US | 162.159.137.232:443 | discord.com | tcp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
| GB | 104.115.34.42:80 | www.microsoft.com | tcp |
Files
memory/1676-1-0x00007FFBEECE3000-0x00007FFBEECE5000-memory.dmp
memory/1676-0-0x00000000004D0000-0x00000000004E0000-memory.dmp
memory/1676-2-0x00007FFBEECE0000-0x00007FFBEF7A1000-memory.dmp
memory/1676-7-0x00007FFBEECE0000-0x00007FFBEF7A1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpD9D5.tmp.bat
| MD5 | 4c23c321524a730960fc5bc95fedd7ab |
| SHA1 | 17f29313736dea43bb4086d57e64e8f5a6379d20 |
| SHA256 | 34b4bad0a5ec4942bf1c50ddf59a614f9c48c816e63df3da22aa37e39b231656 |
| SHA512 | bfe8e618e75dcfe9927bea892a01c52dfcb35e96e5a7c674a6d0e5ec9db6d7e6804103610e7eda00f565046024151f50a988f4e94ac4bb56f00283c777d8b0b7 |
C:\Users\Admin\HP_Drivers\HP_Updates.exe
| MD5 | c312ff9dfd199ae5b504932e018b4d84 |
| SHA1 | 75ff47cc5fb04726d14df93b9c8804360a74f4ad |
| SHA256 | ab51ee1b9d05629f8756c9d552a2e182f6273c34a9cb052e9ba5338667bc5a97 |
| SHA512 | 94a1e811451022abc9e408c5ede051d9656ce74383455b3ecb897dba9c1abf1bac21447b42ece811845271639de201d780b9aaab594615636fc59538be3684a7 |
memory/4032-12-0x00007FFBEE213000-0x00007FFBEE215000-memory.dmp
memory/4032-13-0x00007FFBEE210000-0x00007FFBEECD1000-memory.dmp
memory/916-14-0x000001A659970000-0x000001A659992000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fzjaspll.fjl.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/4032-26-0x00007FFBEE213000-0x00007FFBEE215000-memory.dmp
memory/4032-27-0x00007FFBEE210000-0x00007FFBEECD1000-memory.dmp