Analysis
- max time kernel
148s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
16/08/2026, 07:18
General
- Target 01c085842459c574d73a08bcfcf52dce28fbdd2d7e327654e090a927c66f6a4d.exe
- Size 45KB
- Sample260816-h497rssdjf
- SHA256 01c085842459c574d73a08bcfcf52dce28fbdd2d7e327654e090a927c66f6a4d
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
-
mu88vn.co:3389
-
mu88vn.co:80
-
mu88vn.co:443
-
mu88vn.co:8080
-
wwww.mu88vn.co:3389
-
wwww.mu88vn.co:80
-
wwww.mu88vn.co:443
-
wwww.mu88vn.co:8080
-
zB9rMfPRnKom
-
delay
3
-
install
true
-
install_file
mu88.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\01c085842459c574d73a08bcfcf52dce28fbdd2d7e327654e090a927c66f6a4d.exe"C:\Users\Admin\AppData\Local\Temp\01c085842459c574d73a08bcfcf52dce28fbdd2d7e327654e090a927c66f6a4d.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 "mu88" /tr '"C:\Users\Admin\AppData\Roaming\mu88.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 "mu88" /tr '"C:\Users\Admin\AppData\Roaming\mu88.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\tmp889F.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\mu88.exe"C:\Users\Admin\AppData\Roaming\mu88.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
-
C:\Users\Admin\AppData\Roaming\mu88.exe"C:\Users\Admin\AppData\Roaming\mu88.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
tmp889F.tmp.bat
mu88.exe
memory/924-0-0x0000000074A32000-0x0000000074A33000-memory.dmp
memory/924-1-0x0000000000C20000-0x0000000000C32000-memory.dmp
memory/924-2-0x0000000074A20000-0x00000000751DC000-memory.dmp
memory/924-3-0x00000000057D0000-0x000000000586C000-memory.dmp
memory/924-8-0x0000000074A20000-0x00000000751DC000-memory.dmp
memory/5936-12-0x0000000074880000-0x000000007503C000-memory.dmp
memory/5936-14-0x0000000074880000-0x000000007503C000-memory.dmp