General
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Target
https://gofile.io/d/ZQ1rrZ
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Sample
240525-2w14nsec38
Malware Config
Targets
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Target
https://gofile.io/d/ZQ1rrZ
Score10/10-
Detect Umbral payload
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Umbral
Umbral stealer is an opensource moduler stealer written in C#.
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njRAT/Bladabindi
Widely used RAT written in .NET.
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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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Downloads MZ/PE file
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Drops file in Drivers directory
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Modifies Windows Firewall
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Drops startup file
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Executes dropped EXE
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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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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Drops file in System32 directory
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1