Analysis
- max time kernel
10s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
17/10/2026, 04:59
General
- Target s8.net.vc.exe
- Size 3.1MB
- Sample261017-fmlrqsxsft
- SHA256 7388e3690b94fb234a301df2cd05d8f2477e334c79e38e048b4074900733c294
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
s8.net.vc:443
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www.s8.net.vc:443
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s8.net.vc:80
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www.s8.net.vc:80
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13489f51-9cb6-4308-bf81-528a00a57578
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encryption_key
ED3227F773701D05083B11A65776F95F93EEEF5E
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install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
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reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- 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 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\s8.net.vc.exe"C:\Users\Admin\AppData\Local\Temp\s8.net.vc.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /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
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /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
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/396-26-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-28-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-34-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-33-0x000000001D3D0000-0x000000001D482000-memory.dmp
memory/396-32-0x000000001D2C0000-0x000000001D310000-memory.dmp
memory/396-23-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-30-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-29-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-19-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-27-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-24-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-22-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-21-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-20-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-17-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-16-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/396-18-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-9-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-10-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-14-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-13-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-12-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-11-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-1-0x0000000000B70000-0x0000000000E94000-memory.dmp
memory/3316-0-0x00007FFBF41BF000-0x00007FFBF41C0000-memory.dmp
memory/3316-8-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-2-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-25-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-7-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-6-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-5-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-4-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp
memory/3316-3-0x00007FFBF4030000-0x00007FFBF49D4000-memory.dmp