General
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Target
SolaraBootstrapper.exe
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Size
56KB
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Sample
240719-g73fnazfjf
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MD5
531ab3880581aa1715864b4f101dbeb8
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SHA1
126fe92bb2d367f816d14d8748b7de2e54cce4d3
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SHA256
b599c347056fe4bfa9bf3138e6e35fa0d29a2525ee1fa226f0b7dd5c1b90362e
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SHA512
98a78e6ddb012b222840a3f2843427e210303280505894b332d0543ea894f66728f9980e9b04872fbf63e00c86d77d78f85477a55d715af499c20ad914988f2e
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SSDEEP
1536:yEwY717Orc6qIDaXvKXPRFXeoWpCZewuHMCC99W:l1arckOvKX5ptiC0C9Q
Static task
static1
Behavioral task
behavioral1
Sample
SolaraBootstrapper.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
SolaraBootstrapper.exe
Resource
win10v2004-20240709-en
Malware Config
Extracted
xworm
necessary-threatened.gl.at.ply.gg:15323
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Install_directory
%ProgramData%
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install_file
dllhost.exe
Targets
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-
Target
SolaraBootstrapper.exe
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Size
56KB
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MD5
531ab3880581aa1715864b4f101dbeb8
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SHA1
126fe92bb2d367f816d14d8748b7de2e54cce4d3
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SHA256
b599c347056fe4bfa9bf3138e6e35fa0d29a2525ee1fa226f0b7dd5c1b90362e
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SHA512
98a78e6ddb012b222840a3f2843427e210303280505894b332d0543ea894f66728f9980e9b04872fbf63e00c86d77d78f85477a55d715af499c20ad914988f2e
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SSDEEP
1536:yEwY717Orc6qIDaXvKXPRFXeoWpCZewuHMCC99W:l1arckOvKX5ptiC0C9Q
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Detect Xworm Payload
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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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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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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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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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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1