Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
10/09/2026, 10:26
General
- Target AsyncClient.exe
- Size 47KB
- Sample260910-mgr5wsar61
- SHA256 569283a3f66bc0de3e28729c0bf63685fc29c0b1a800deb3a600345f089bdd8e
Malware Config
Extracted
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asyncrat
-
0.5.8
-
Default
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789win7.mobi/:6606
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789win7.mobi/:7707
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789win7.mobi/:8808
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789win7.mobi/:8080
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789win7.mobi/:80
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789win7.mobi/:443
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789win7.mobi/:8443
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789win.indt.in/:6606
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789win.indt.in/:7707
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789win.indt.in/:8808
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789win.indt.in/:8080
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789win.indt.in/:80
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789win.indt.in/:443
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789win.indt.in/:8443
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789win01.dev/:6606
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789win01.dev/:7707
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789win01.dev/:8808
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789win01.dev/:8080
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789win01.dev/:80
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789win01.dev/:443
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KrfQPlnmWc8w
-
delay
3
-
install
true
-
install_file
ChromeUpdate.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 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ChromeUpdate" /tr '"C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"' & exit2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "ChromeUpdate" /tr '"C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp51B0.tmp.bat""2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
-
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C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
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C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp51B0.tmp.bat
ChromeUpdate.exe
memory/4604-12-0x0000000074CD0000-0x000000007548C000-memory.dmp
memory/4604-14-0x0000000074CD0000-0x000000007548C000-memory.dmp
memory/5104-0-0x0000000074CF2000-0x0000000074CF3000-memory.dmp
memory/5104-1-0x0000000000C10000-0x0000000000C22000-memory.dmp
memory/5104-2-0x0000000074CE0000-0x000000007549C000-memory.dmp
memory/5104-3-0x0000000005650000-0x00000000056EC000-memory.dmp
memory/5104-8-0x0000000074CE0000-0x000000007549C000-memory.dmp