Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
11/10/2026, 13:25
General
- Target s8.market.exe
- Size 3.1MB
- Sample261011-qperbavy8k
- SHA256 a06c9d06588534bed4e742b0e70ae2b7fe0c287b8b777a6c4bad09ba69e943f3
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
s8.market:443
-
www.s8.market:443
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s8.market:80
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www.s8.market:80
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15df5710-8f1a-4398-bc03-dc39cbf6e451
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encryption_key
ED3227F773701D05083B11A65776F95F93EEEF5E
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
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 1 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 2 IoCs
- Suspicious use of WriteProcessMemory 2 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.market.exe"C:\Users\Admin\AppData\Local\Temp\s8.market.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
-
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
-
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Client.exe
memory/4584-14-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-8-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-3-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-4-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-5-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-6-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-7-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-22-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-9-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-10-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-11-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-12-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-13-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-0-0x00007FFF85D6F000-0x00007FFF85D70000-memory.dmp
memory/4584-2-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4584-1-0x0000000000620000-0x0000000000944000-memory.dmp
memory/4660-21-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-18-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-19-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-20-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-16-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-23-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-17-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-24-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-25-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-26-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-27-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp
memory/4660-29-0x000000001CE00000-0x000000001CE50000-memory.dmp
memory/4660-30-0x000000001CF10000-0x000000001CFC2000-memory.dmp
memory/4660-31-0x00007FFF85BE0000-0x00007FFF86584000-memory.dmp