Analysis
- user interaction
yes - max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
07/09/2026, 23:28
General
- Target Matcha.exe
- Size 3.1MB
- Sample260907-3gfd4axeqe
- SHA256 254e0ff654187568c5ef4f8de0d6a49bff4240925669ab6d5a592362e4e9928d
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office1
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192.168.12.183:4782
-
28fdbe36-43d8-4852-ab62-5d8a549499b7
-
encryption_key
9C6CD72DCB388113E1546CF34CC528D2BE09E366
-
install_name
MatchaExternal.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
MatchaDriver
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of AdjustPrivilegeToken 8 IoCs
- Suspicious use of FindShellTrayWindow 34 IoCs
- Suspicious use of SendNotifyMessage 34 IoCs
- Suspicious use of SetWindowsHookEx 1 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\Matcha.exe"C:\Users\Admin\AppData\Local\Temp\Matcha.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "MatchaDriver" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\MatchaExternal.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\MatchaExternal.exe"C:\Users\Admin\AppData\Roaming\SubDir\MatchaExternal.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "MatchaDriver" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\MatchaExternal.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Users\Admin\AppData\Roaming\SubDir\MatchaExternal.exeC:\Users\Admin\AppData\Roaming\SubDir\MatchaExternal.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /71⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
MatchaExternal.exe
memory/3476-11-0x000000001DA00000-0x000000001DAB2000-memory.dmp
memory/3476-12-0x000000001E1F0000-0x000000001E718000-memory.dmp
memory/3476-7-0x000000001BEA0000-0x000000001BEB0000-memory.dmp
memory/3476-9-0x000000001D8F0000-0x000000001D940000-memory.dmp
memory/3576-14-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-15-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-13-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-19-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-23-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-25-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-24-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-22-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-21-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/3576-20-0x000001536AA90000-0x000001536AA91000-memory.dmp
memory/4688-1-0x0000000002610000-0x0000000002620000-memory.dmp
memory/4688-0-0x0000000000130000-0x0000000000454000-memory.dmp