Analysis
- max time kernel
149s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
19/04/2026, 16:10
General
- Target chromeupdate.exe
- Size 3.1MB
- Sample260419-tmbtesev4m
- SHA256 963a003b54104807e294dd42303910074c61887f8b7717f8fca61247e711c765
Malware Config
Extracted
-
quasar
-
1.4.1
-
m.ga888bet.net
-
m.ga888bet.net:80
-
m.ga888bet.net:8080
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m.ga888bet.net:443
-
m.ga888bet.net:8443
-
dc84e7d7-1880-44d7-b9b1-977a69077998
-
encryption_key
576D1496F563366ADEBFC3046D6584BB4AD91241
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
10
-
startup_key
https://m.ga888bet.net
-
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
-
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://m.ga888bet.net" /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://m.ga888bet.net" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
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/2276-0-0x0000000000F80000-0x00000000012A4000-memory.dmp
memory/2276-1-0x0000000003490000-0x00000000034A0000-memory.dmp
memory/2276-8-0x00000000033F0000-0x0000000003402000-memory.dmp
memory/2276-7-0x0000000001AD0000-0x0000000001ADC000-memory.dmp
memory/3460-15-0x000000001CC60000-0x000000001CD12000-memory.dmp
memory/3460-14-0x000000001CB50000-0x000000001CBA0000-memory.dmp
memory/3460-9-0x000000001BE90000-0x000000001BEA0000-memory.dmp
memory/3460-16-0x00000000030A0000-0x00000000030AC000-memory.dmp
memory/3460-18-0x000000001BE90000-0x000000001BEA0000-memory.dmp
memory/3460-17-0x0000000003170000-0x0000000003182000-memory.dmp
memory/4840-12-0x00000000026A0000-0x00000000026AC000-memory.dmp
memory/4840-13-0x0000000002720000-0x0000000002732000-memory.dmp