General
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Target
SolaraBootstrapper.exe
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Size
2.6MB
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Sample
240609-1fm2fafh77
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MD5
bf3f5123a1a71b1f9f235cbc325d1c70
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SHA1
4eb19a43f14f689f1ee05836022918c8f175d057
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SHA256
4a8f10759984f27edaed60d418d231f564c406817b6398f462daa3deb8a05867
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SHA512
36031872fbc6774cc15b7d66a3f9dc5fb27a5fd5a8d3fff0fa0d282cac26ddf425c76c9e2c3f5204266c5419e435cf6727a9770764e55381561c35764acd5083
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SSDEEP
49152:8xmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyx0:8xx9NUFkQx753uWuCyyx0
Behavioral task
behavioral1
Sample
SolaraBootstrapper.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
SolaraBootstrapper.exe
Resource
win10v2004-20240508-en
Malware Config
Targets
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Target
SolaraBootstrapper.exe
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Size
2.6MB
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MD5
bf3f5123a1a71b1f9f235cbc325d1c70
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SHA1
4eb19a43f14f689f1ee05836022918c8f175d057
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SHA256
4a8f10759984f27edaed60d418d231f564c406817b6398f462daa3deb8a05867
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SHA512
36031872fbc6774cc15b7d66a3f9dc5fb27a5fd5a8d3fff0fa0d282cac26ddf425c76c9e2c3f5204266c5419e435cf6727a9770764e55381561c35764acd5083
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SSDEEP
49152:8xmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyx0:8xx9NUFkQx753uWuCyyx0
Score10/10-
Modifies visiblity of hidden/system files in Explorer
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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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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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
2Virtualization/Sandbox Evasion
1