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250326-thjngazn13 8General
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Target
https://learn.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
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Sample
250323-kk5t2svwat
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://learn.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
Resource
win11-20250313-en
Malware Config
Extracted
quasar
1.4.1
Office04
dsadasdsw-35353.portmap.host:35353
dsadasdsw-35353.portmap.host:443
127.0.0.1:443
127.0.0.1:2404
e7fb99cd-b448-4cac-bc42-c50ea869c90e
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encryption_key
78A943F2F87098354F095739399EB26C9F01D1F3
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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://learn.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
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Quasar family
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Quasar payload
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Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
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Drops file in Drivers directory
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A potential corporate email address has been identified in the URL: [email protected]
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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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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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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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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1