Analysis Overview
SHA256
0902f1d84a1c4ae0bd2c0dbb029240487332655a0d7ea5106013b7a2590b519b
Threat Level: Known bad
The file SeroXenBoost.exe was found to be: Known bad.
Malicious Activity Summary
Silverrat family
SilverRat
Sets file to hidden
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Legitimate hosting services abused for malware hosting/C2
Command and Scripting Interpreter: PowerShell
Adds Run key to start application
Unsigned PE
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
Views/modifies file attributes
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Uses Task Scheduler COM API
Delays execution with timeout.exe
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-02-23 17:06
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 17:06
Reported
2025-02-23 17:09
Platform
win7-20240903-en
Max time kernel
132s
Max time network
142s
Command Line
Signatures
SilverRat
Silverrat family
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\attrib.exe | N/A |
| N/A | N/A | C:\Windows\System32\attrib.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\cmd.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Windows\\$77xdwd.dll.exe\"" | C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.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 |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.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\Roaming\Windows\$77xdwd.dll.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\attrib.exe | N/A |
| N/A | N/A | C:\Windows\System32\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe
"C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe"
C:\Windows\System32\attrib.exe
"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Windows"
C:\Windows\System32\attrib.exe
"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe"
C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp973.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe
"C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe"
C:\Windows\system32\schtasks.exe
"schtasks.exe" /query /TN $77xdwd.dll.exe
C:\Windows\system32\schtasks.exe
"schtasks.exe" /Create /SC ONCE /TN "$77xdwd.dll.exe" /TR "C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe \"\$77xdwd.dll.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
C:\Windows\system32\schtasks.exe
"schtasks.exe" /query /TN $77xdwd.dll.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
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | discord.com | udp |
| US | 162.159.137.232:443 | discord.com | tcp |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp |
Files
memory/2112-0-0x000007FEF5523000-0x000007FEF5524000-memory.dmp
memory/2112-1-0x000000013F650000-0x000000013F660000-memory.dmp
memory/2112-2-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp
memory/2112-3-0x000007FEF5523000-0x000007FEF5524000-memory.dmp
memory/2112-4-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp973.tmp.bat
| MD5 | 09a02d44bd52b2f7d3d89107c9dd4aee |
| SHA1 | 528c5cb9d37c4eff066c4211024616094069770b |
| SHA256 | d3f90b420fcc111dd28bb4e2641b74d2e77ac9b07655bd67f660d23f74b2ff42 |
| SHA512 | cbfeacaac4e367cb3184d7190e124c555e86ae7375717cadbd6606d50bd1c6472abe1ec98e3ad2aa012ef5ae5dd049a25d473ac9e55aeae8573593edfa9025f0 |
memory/2112-14-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp
\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe
| MD5 | 8005773f97e8f5c44e2f12eab0141cc5 |
| SHA1 | c751dde5b44d985eebaeb9dc027867a9049d4d07 |
| SHA256 | 0902f1d84a1c4ae0bd2c0dbb029240487332655a0d7ea5106013b7a2590b519b |
| SHA512 | 2e6b9cff1f281e4a3ce14c879349caf1794b465de48af9bd9e6fee28c75119546872a948b381d248ad46baae6b52a046a9df7ec865fb24df77cd05d9a2639e05 |
memory/2568-19-0x000000013F6D0000-0x000000013F6E0000-memory.dmp
memory/2592-24-0x000000001B760000-0x000000001BA42000-memory.dmp
memory/2592-25-0x0000000002790000-0x0000000002798000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-23 17:06
Reported
2025-02-23 17:09
Platform
win10v2004-20250217-en
Max time kernel
130s
Max time network
147s
Command Line
Signatures
SilverRat
Silverrat family
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\attrib.exe | N/A |
| N/A | N/A | C:\Windows\System32\attrib.exe | N/A |
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\SeroXenBoost.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Windows\\$77xdwd.dll.exe\"" | C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.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 |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.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\Roaming\Windows\$77xdwd.dll.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\attrib.exe | N/A |
| N/A | N/A | C:\Windows\System32\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe
"C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe"
C:\Windows\System32\attrib.exe
"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Windows"
C:\Windows\System32\attrib.exe
"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1E31.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe
"C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /query /TN $77xdwd.dll.exe
C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /Create /SC ONCE /TN "$77xdwd.dll.exe" /TR "C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe \"\$77xdwd.dll.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /query /TN $77xdwd.dll.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
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | discord.com | udp |
| US | 162.159.135.232:443 | discord.com | tcp |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp | |
| US | 172.221.202.55:4421 | tcp |
Files
memory/4812-0-0x00007FFC476F3000-0x00007FFC476F5000-memory.dmp
memory/4812-1-0x0000000000C80000-0x0000000000C90000-memory.dmp
memory/4812-2-0x00007FFC476F0000-0x00007FFC481B1000-memory.dmp
memory/4812-3-0x00007FFC476F0000-0x00007FFC481B1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp1E31.tmp.bat
| MD5 | 84d20c14b4494dda93c15d0387efefd0 |
| SHA1 | 8442b724a2ac1a6cb904d14467ddf010b5951047 |
| SHA256 | e85a52d5c8907e866764a5b1d2e007007bb4a1f1e4b73174e6db22c67978ac08 |
| SHA512 | 1450558f8fb1defdfefc025f0657b0c7f486e387ad1ef016be036994951f24cca2d6e268eeb3ecc567bfce83ef356955a23bc736f8a2eb6237889c3dd9bcf992 |
memory/4812-9-0x00007FFC476F0000-0x00007FFC481B1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe
| MD5 | 8005773f97e8f5c44e2f12eab0141cc5 |
| SHA1 | c751dde5b44d985eebaeb9dc027867a9049d4d07 |
| SHA256 | 0902f1d84a1c4ae0bd2c0dbb029240487332655a0d7ea5106013b7a2590b519b |
| SHA512 | 2e6b9cff1f281e4a3ce14c879349caf1794b465de48af9bd9e6fee28c75119546872a948b381d248ad46baae6b52a046a9df7ec865fb24df77cd05d9a2639e05 |
memory/2012-13-0x00007FFC476F0000-0x00007FFC481B1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0ikq4evo.5ms.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/2896-23-0x0000028C39110000-0x0000028C39132000-memory.dmp
memory/2012-26-0x00007FFC476F0000-0x00007FFC481B1000-memory.dmp