Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
04/06/2026, 10:59
General
- Target calmwave.exe
- Size 3.1MB
- Sample260604-m3hhkscz21
- SHA256 53fd2f2b0e86b45a097ca5d0ec0eb74ff67174127f737bd209da334fe0cfabf8
Malware Config
Extracted
-
quasar
-
1.4.1
-
CalmWave
-
dn88s.net:443
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dn88.tips:443
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u888on.games:443
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trendline.za.com:443
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d1001a7b-d63b-41bf-bafc-0ced3714ea3f
-
encryption_key
42E6C1CCE0206FB677AB01B544B9714D387B33F7
-
install_name
calmwave.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
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reconnect_delay
3000
-
startup_key
CalmWave
-
subdirectory
CalmWave
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Drops file in Program Files directory 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 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 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\calmwave.exe"C:\Users\Admin\AppData\Local\Temp\calmwave.exe"1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "CalmWave" /sc ONLOGON /tr "C:\Program Files\CalmWave\calmwave.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Program Files\CalmWave\calmwave.exe"C:\Program Files\CalmWave\calmwave.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "CalmWave" /sc ONLOGON /tr "C:\Program Files\CalmWave\calmwave.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
calmwave.exe
calmwave.exe.log
memory/2540-8-0x0000000003340000-0x0000000003350000-memory.dmp
memory/2540-9-0x000000001E480000-0x000000001E4D0000-memory.dmp
memory/2540-10-0x000000001E590000-0x000000001E642000-memory.dmp
memory/2540-11-0x0000000003340000-0x0000000003350000-memory.dmp
memory/4332-0-0x0000000000080000-0x00000000003A4000-memory.dmp
memory/4332-1-0x000000001C780000-0x000000001C790000-memory.dmp