General
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Target
https://github.com/quasar/Quasar
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Sample
241203-h5n1xsvnes
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/quasar/Quasar
Resource
win10ltsc2021-20241023-en
Malware Config
Extracted
quasar
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reconnect_delay
5000
Extracted
quasar
1.4.1
Office04
127.0.0.1:4782
6dab755e-99a5-475b-95a9-433b328d9999
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encryption_key
78E30C32374E98EFA5E3E588D4C26247E1BE7C9F
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Targets
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Target
https://github.com/quasar/Quasar
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Quasar family
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Quasar payload
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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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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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Legitimate hosting services abused for malware hosting/C2
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1