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Analysis
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max time kernel
61s -
max time network
76s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
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submitted
22/03/2025, 13:57
Errors
General
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Target
Proton.exe
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Size
831KB
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MD5
34e8bec2eff81b0451a68e3fc7562fb8
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SHA1
91b8aa5907020bad02fcaed731f53e9e433e0f4d
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SHA256
dd31e310c502f14a8ca479ee8723dcb8ded8ce9caf6fbeaa435fc966bd1458a4
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SHA512
0a6d23997a9d29f40907097c28afa62162cc03369b8a8c4c84e124d131706a8dc19b62c0cc9efb2b6deccbcd72d4e034d9b893d538e5060d0cf7b43556bf4b05
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SSDEEP
24576:uZsS44StKHIPbcNK0KKfaOwI55l2SLaB4/:uZsSIKEgKKHwCBe
Malware Config
Extracted
quasar
1.5.0
Office04
fall-alberta.gl.at.ply.gg:48316
f3374a4e-4175-4db9-a8d8-303de2184767
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encryption_key
669A421372DEF816BCFAA19491270BD72DCE71F1
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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
Proton VPN
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subdirectory
SubDir
Signatures
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Quasar RAT
Quasar is an open source Remote Access Tool.
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Quasar family
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Quasar payload 2 IoCs
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: AddClipboardFormatListener 1 IoCs
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Suspicious behavior: EnumeratesProcesses 22 IoCs
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Suspicious use of AdjustPrivilegeToken 7 IoCs
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Suspicious use of FindShellTrayWindow 47 IoCs
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Suspicious use of SendNotifyMessage 47 IoCs
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Suspicious use of WriteProcessMemory 2 IoCs
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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\Proton.exe"C:\Users\Admin\AppData\Local\Temp\Proton.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Proton VPN" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /71⤵
- Checks SCSI registry key(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
72KB
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Filesize
856KB
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Filesize
104KB
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Filesize
10.8MB
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Filesize
320KB
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Filesize
712KB
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Filesize
312KB
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Filesize
8KB
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Filesize
10.8MB
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Filesize
240KB
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Filesize
8KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB