Analysis
- max time kernel
149s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
10/11/2026, 04:45
General
- Target mcw678com.best.exe
- Size 3.1MB
- Sample261110-fdextsy1at
- SHA256 1d8cd8e10e0cb36c7b7f5955ca043b155029198ced2e5bb86ff2b4c36f942413
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
mcw678com.best:443
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www.mcw678com.best:443
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mcw678com.best:80
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www.mcw678com.best:80
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0313ef6a-81e6-44bc-8757-be5080e32f8d
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encryption_key
ED3227F773701D05083B11A65776F95F93EEEF5E
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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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 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\mcw678com.best.exe"C:\Users\Admin\AppData\Local\Temp\mcw678com.best.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
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-
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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/3948-8-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-10-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-3-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-4-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-5-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-6-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-2-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-7-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-9-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-25-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-11-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-12-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-13-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-14-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/3948-1-0x0000000000B10000-0x0000000000E34000-memory.dmp
memory/3948-0-0x00007FFE6AA5F000-0x00007FFE6AA60000-memory.dmp
memory/6068-20-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-22-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-23-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-24-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-21-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-28-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-27-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-26-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-30-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-29-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-31-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-32-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-33-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-34-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp
memory/6068-36-0x000000001CB10000-0x000000001CB60000-memory.dmp
memory/6068-37-0x000000001CC20000-0x000000001CCD2000-memory.dmp
memory/6068-38-0x00007FFE6A8D0000-0x00007FFE6B274000-memory.dmp