General
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Target
solara.exe
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Size
2.8MB
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Sample
250412-ste9raxvbx
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MD5
84c1cc9f977f79b4820bcb8f236fce20
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SHA1
88d879456a7f075760525824dcc8b2de7bbe6f13
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SHA256
808fc30e9ed9cf43a86b6608fc9c5f5c28443d51207f30d06cf88c0081b54e18
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SHA512
66b98b55c9d36b27a0f96eba539b820450ba552deacc323dabfbe4db936eb5ad4c57cb8683e10570212ce1b6ea9f04adeaecd9f41618e4625f78bc5b87f3f65c
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SSDEEP
49152:N5wRNpPAI7CYItONjnwsp61qLJa2uQzdqYoqDLdS96A4zDziq2EJLFp2C/XHYQ/:NaRvROYEQEqFajKoqDLgMAI2KLmC/XHv
Static task
static1
Behavioral task
behavioral1
Sample
solara.exe
Resource
win10ltsc2021-20250410-en
Behavioral task
behavioral2
Sample
solara.exe
Resource
win10v2004-20250410-en
Behavioral task
behavioral3
Sample
solara.exe
Resource
win10ltsc2021-20250410-en
Behavioral task
behavioral4
Sample
solara.exe
Resource
win11-20250410-en
Malware Config
Targets
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Target
solara.exe
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Size
2.8MB
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MD5
84c1cc9f977f79b4820bcb8f236fce20
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SHA1
88d879456a7f075760525824dcc8b2de7bbe6f13
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SHA256
808fc30e9ed9cf43a86b6608fc9c5f5c28443d51207f30d06cf88c0081b54e18
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SHA512
66b98b55c9d36b27a0f96eba539b820450ba552deacc323dabfbe4db936eb5ad4c57cb8683e10570212ce1b6ea9f04adeaecd9f41618e4625f78bc5b87f3f65c
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SSDEEP
49152:N5wRNpPAI7CYItONjnwsp61qLJa2uQzdqYoqDLdS96A4zDziq2EJLFp2C/XHYQ/:NaRvROYEQEqFajKoqDLgMAI2KLmC/XHv
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Detect Umbral payload
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Umbral family
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Disables Task Manager via registry modification
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Modifies Windows Firewall
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Pre-OS Boot
1Bootkit
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1