Analysis
- max time kernel
58s - max time network
61s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
09/08/2026, 19:33
General
- Target b34eda23ca693243820b3cd7183c15e3a52adc4eaf45bcdb52a163020ae863da.exe
- Size 48KB
- Sample260809-x9ys9avarc
- SHA256 b34eda23ca693243820b3cd7183c15e3a52adc4eaf45bcdb52a163020ae863da
Malware Config
Extracted
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asyncrat
-
0.5.8
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789win01.cyou
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789win01.cyou:6606
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789win01.cyou:80
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789win01.cyou:8080
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789win01.cyou:443
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789win01.cyou:8443
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789win01.cyou:22
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789win01.cyou:23
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7Y5nsqpSPgAD
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delay
3
-
install
true
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install_file
GoogleUpdate.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\b34eda23ca693243820b3cd7183c15e3a52adc4eaf45bcdb52a163020ae863da.exe"C:\Users\Admin\AppData\Local\Temp\b34eda23ca693243820b3cd7183c15e3a52adc4eaf45bcdb52a163020ae863da.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 "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"' & exit2⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GoogleUpdate.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\tmp1563.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\GoogleUpdate.exe"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"3⤵
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C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp1563.tmp.bat
GoogleUpdate.exe
memory/2392-13-0x00000000744B0000-0x0000000074C6C000-memory.dmp
memory/2392-15-0x00000000744B0000-0x0000000074C6C000-memory.dmp
memory/2480-0-0x00000000744C2000-0x00000000744C3000-memory.dmp
memory/2480-1-0x0000000000730000-0x0000000000742000-memory.dmp
memory/2480-2-0x00000000744B0000-0x0000000074C6C000-memory.dmp
memory/2480-3-0x0000000005250000-0x00000000052B6000-memory.dmp
memory/2480-4-0x00000000056A0000-0x000000000573C000-memory.dmp
memory/2480-10-0x00000000744B0000-0x0000000074C6C000-memory.dmp