Analysis
- max time kernel
58s - max time network
59s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
13/04/2026, 13:44
General
- Target chromeupdate.exe
- Size 3.1MB
- Sample260413-q146caft3q
- SHA256 48bdc416972f87fb1f17c9a088696c695af06e183636f4bfe949c01400cc1bd9
Malware Config
Extracted
-
quasar
-
1.4.1
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dispercentern.us.org
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dispercentern.us.org:80
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dispercentern.us.org:8080
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dispercentern.us.org:443
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dispercentern.us.org:8443
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dc84e7d7-1880-44d7-b9b1-977a69077998
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encryption_key
576D1496F563366ADEBFC3046D6584BB4AD91241
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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log_directory
Logs
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reconnect_delay
10
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startup_key
https://dispercentern.us.org
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\chromeupdate.exe"C:\Users\Admin\AppData\Local\Temp\chromeupdate.exe"1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "https://dispercentern.us.org" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "https://dispercentern.us.org" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/2680-0-0x0000000000710000-0x0000000000A34000-memory.dmp
memory/2680-1-0x000000001B860000-0x000000001B870000-memory.dmp
memory/2680-8-0x0000000002BD0000-0x0000000002BE2000-memory.dmp
memory/2680-7-0x0000000002B10000-0x0000000002B1C000-memory.dmp
memory/4408-15-0x0000000003570000-0x0000000003582000-memory.dmp
memory/4408-14-0x00000000033B0000-0x00000000033BC000-memory.dmp
memory/4648-11-0x000000001C070000-0x000000001C0C0000-memory.dmp
memory/4648-12-0x000000001C180000-0x000000001C232000-memory.dmp
memory/4648-9-0x000000001B1E0000-0x000000001B1F0000-memory.dmp
memory/4648-16-0x00000000024E0000-0x00000000024EC000-memory.dmp
memory/4648-17-0x0000000002590000-0x00000000025A2000-memory.dmp
memory/4648-19-0x000000001B1E0000-0x000000001B1F0000-memory.dmp
memory/4648-18-0x000000001BC00000-0x000000001BCD6000-memory.dmp