Analysis
- max time kernel
30s - max time network
25s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
07/10/2026, 04:41
General
- Target supposed mod menu.bat
- Size 86KB
- Sample261007-fbhkyastdz
- SHA256 a864e3cb26c502548de686826abc874205c1d6a7778d88c0bc107d1a87ec7b43
Malware Config
Extracted
-
quasar
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encryption_key
71D7DFC6C58F396C8369C0D3856FD86B9CCA7D85
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key_salt
5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382
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reconnect_delay
3000
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- PulsaRAT library module 2 IoCs
Core component of the PulsaRAT remote access trojan, implementing its command protocol for hidden remote desktop, UAC bypass, persistence, and credential theft.
- Quasar payload 1 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 29 IoCs
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 6 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.
- cURL User-Agent 1 IoCs
Uses User-Agent string associated with cURL utility.
Processes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\supposed mod menu.bat"1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\conhost.execonhost --headless "C:\Users\Admin\AppData\Local\Temp\supposed mod menu.bat"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\supposed mod menu.bat""3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\curl.exeC:\Windows\System32\curl.exe -s -L --retry 4 --retry-all-errors --retry-delay 2 --connect-timeout 15 -o "C:\Users\Admin\AppData\Local\Programs\Python3_nCC2T0BY\python.zip" "https://www.python.org/ftp/python/3.13.15/python-3.13.15-embed-amd64.zip"4⤵
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C:\Windows\System32\tar.exeC:\Windows\System32\tar.exe -xf "C:\Users\Admin\AppData\Local\Programs\Python3_nCC2T0BY\python.zip" -C "C:\Users\Admin\AppData\Local\Programs\Python3_nCC2T0BY"4⤵
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C:\Windows\system32\conhost.execonhost --headless C:\Users\Admin\AppData\Local\Programs\Python3_nCC2T0BY\python.exe4⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Programs\Python3_nCC2T0BY\python.exeC:\Users\Admin\AppData\Local\Programs\Python3_nCC2T0BY\python.exe5⤵
- Executes dropped EXE
- Loads dropped DLL
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Programs\Python3_nCC2T0BY\python.exeC:\Users\Admin\AppData\Local\Programs\Python3_nCC2T0BY\python.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
VCRUNTIME140.dll
sitecustomize.cpython-313.pyc
_bz2.pyd
_ctypes.pyd
_hashlib.pyd
_lzma.pyd
_socket.pyd
_ssl.pyd
libcrypto-3.dll
libffi-8.dll
libssl-3.dll
python.exe
python.zip
python3.DLL
python313._pth
python313.dll
python313.zip
select.pyd
sitecustomize.py
sitecustomize.py
unicodedata.pyd
memory/4392-162-0x00007FFFF5420000-0x00007FFFF6CFC000-memory.dmp
memory/4392-163-0x000002AE002F0000-0x000002AE003E4000-memory.dmp
memory/4392-164-0x000002AE00190000-0x000002AE001C4000-memory.dmp
memory/4392-165-0x000002AE1FEB0000-0x000002AE1FEEE000-memory.dmp