Analysis
- max time kernel
149s - max time network
153s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
29/03/2026, 07:24
General
- Target hydroflask.sa.exe
- Size 3.1MB
- Sample260329-h8ftqag19v
- SHA256 2e2ffdc5a41783789d0581ee3e97bcebf71faf35dbcc1a4b07618ff6524ba463
Malware Config
Extracted
-
quasar
-
1.4.1
-
hydroflask.sa.com
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hydroflask.sa.com:80
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hydroflask.sa.com:8080
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hydroflask.sa.com:443
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hydroflask.sa.com:8443
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www.hydroflask.sa.com:80
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www.hydroflask.sa.com:8080
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www.hydroflask.sa.com:443
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www.hydroflask.sa.com: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
-
startup_key
https://hydroflask.sa.com
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 1 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\hydroflask.sa.exe"C:\Users\Admin\AppData\Local\Temp\hydroflask.sa.exe"1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "https://hydroflask.sa.com" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
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
memory/3932-0-0x0000000000340000-0x0000000000664000-memory.dmp
memory/3932-1-0x000000001B2D0000-0x000000001B2E0000-memory.dmp
memory/3932-2-0x000000001BF20000-0x000000001BF70000-memory.dmp
memory/3932-3-0x000000001C030000-0x000000001C0E2000-memory.dmp
memory/3932-4-0x0000000002850000-0x000000000285C000-memory.dmp
memory/3932-5-0x0000000002860000-0x0000000002868000-memory.dmp
memory/3932-7-0x000000001B730000-0x000000001B742000-memory.dmp
memory/3932-8-0x000000001B2D0000-0x000000001B2E0000-memory.dmp
memory/3932-6-0x000000001B2E0000-0x000000001B3FE000-memory.dmp