Analysis
- max time kernel
148s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
20/07/2026, 12:19
General
- Target 3403a876d9de42b1831c66738ab33c4dfcdfefb8d6214383d54d156044c34fb8.exe
- Size 45KB
- Sample260720-phkhjsb14s
- SHA256 3403a876d9de42b1831c66738ab33c4dfcdfefb8d6214383d54d156044c34fb8
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
-
103.109.100.136:80
-
103.109.100.136:22
-
103.109.100.136:8080
-
103.109.100.136:8880
-
103.109.100.136:2052
-
103.109.100.136:2082
-
103.109.100.136:2086
-
103.109.100.136:2095
-
103.109.100.136:443
-
103.109.100.136:2053
-
103.109.100.136:2083
-
103.109.100.136:2087
-
103.109.100.136:2096
-
103.109.100.136:8443
-
13WvSawIC0CZ
-
delay
0
-
install
true
-
install_file
w65x.exe
-
install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 31 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\3403a876d9de42b1831c66738ab33c4dfcdfefb8d6214383d54d156044c34fb8.exe"C:\Users\Admin\AppData\Local\Temp\3403a876d9de42b1831c66738ab33c4dfcdfefb8d6214383d54d156044c34fb8.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "w65x" /tr '"C:\Users\Admin\AppData\Roaming\w65x.exe"' & exit2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "w65x" /tr '"C:\Users\Admin\AppData\Roaming\w65x.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC37A.tmp.bat""2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
-
-
C:\Users\Admin\AppData\Roaming\w65x.exe"C:\Users\Admin\AppData\Roaming\w65x.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
-
C:\Users\Admin\AppData\Roaming\w65x.exe"C:\Users\Admin\AppData\Roaming\w65x.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
tmpC37A.tmp.bat
w65x.exe
memory/4612-0-0x0000000074482000-0x0000000074483000-memory.dmp
memory/4612-1-0x0000000000460000-0x0000000000472000-memory.dmp
memory/4612-2-0x0000000074470000-0x0000000074C2C000-memory.dmp
memory/4612-3-0x0000000004FD0000-0x000000000506C000-memory.dmp
memory/4612-9-0x0000000074470000-0x0000000074C2C000-memory.dmp
memory/6020-12-0x0000000074470000-0x0000000074C2C000-memory.dmp
memory/6020-14-0x0000000074470000-0x0000000074C2C000-memory.dmp