Analysis
- max time kernel
60s - max time network
60s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
25/09/2026, 07:14
General
- Target S8 toi choi.exe
- Size 45KB
- Sample260925-h2wxcssejd
- SHA256 e52c460859291aa29762e3957b52994d635b112645f36fe45741b36456caeeb5
Malware Config
Extracted
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asyncrat
-
0.5.8
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S8
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104.21.72.92:8080
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172.67.179.118:8080
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s666hn.com:8080
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N66z7YRPNvee
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delay
3
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install
true
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install_file
S8.exe
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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 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 1 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.
Processes
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C:\Users\Admin\AppData\Local\Temp\S8 toi choi.exe"C:\Users\Admin\AppData\Local\Temp\S8 toi choi.exe"1⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "S8" /tr '"C:\Users\Admin\AppData\Roaming\S8.exe"' & exit2⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "S8" /tr '"C:\Users\Admin\AppData\Roaming\S8.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp573E.tmp.bat""2⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\S8.exe"C:\Users\Admin\AppData\Roaming\S8.exe"3⤵
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C:\Users\Admin\AppData\Roaming\S8.exe"C:\Users\Admin\AppData\Roaming\S8.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp573E.tmp.bat
S8.exe
memory/1384-12-0x00000000744D0000-0x0000000074C8C000-memory.dmp
memory/1384-14-0x00000000744D0000-0x0000000074C8C000-memory.dmp
memory/4432-0-0x00000000746B2000-0x00000000746B3000-memory.dmp
memory/4432-1-0x0000000000330000-0x0000000000342000-memory.dmp
memory/4432-2-0x00000000746A0000-0x0000000074E5C000-memory.dmp
memory/4432-3-0x0000000004D20000-0x0000000004DBC000-memory.dmp
memory/4432-8-0x00000000746A0000-0x0000000074E5C000-memory.dmp