General
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Target
https://epicgames-download1.akamaized.net/Builds/UnrealEngineLauncher/Installers/Win32/EpicInstaller-15.17.1.msi?launcherfilename=EpicInstaller-15.17.1-d367ca0c9d10495ea536934a3ad8eb37.msi
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Sample
240614-brqh9szbqd
Malware Config
Targets
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Target
https://epicgames-download1.akamaized.net/Builds/UnrealEngineLauncher/Installers/Win32/EpicInstaller-15.17.1.msi?launcherfilename=EpicInstaller-15.17.1-d367ca0c9d10495ea536934a3ad8eb37.msi
Score9/10-
Renames multiple (125) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Blocklisted process makes network request
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Executes dropped EXE
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Loads dropped DLL
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Modifies file permissions
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Registers COM server for autorun
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Drops file in System32 directory
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MITRE ATT&CK Matrix ATT&CK v13
Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Defense Evasion
File and Directory Permissions Modification
1Modify Registry
2Subvert Trust Controls
1Install Root Certificate
1