Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
24/08/2026, 15:18
General
- Target 218289af388646b362166b7777e31fe3b3b552cc221541cb1a48a26e7ee4d13c.exe
- Size 66KB
- Sample260824-splkzaea35
- SHA256 218289af388646b362166b7777e31fe3b3b552cc221541cb1a48a26e7ee4d13c
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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www.ck444app.net:6606
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www.ck444app.net:7707
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www.ck444app.net:8808
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www.ck444app.net:80
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www.ck444app.net:443
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loicLdNNVUYT
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delay
10
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install
true
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install_file
www.ck444app.net.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 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 3 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\218289af388646b362166b7777e31fe3b3b552cc221541cb1a48a26e7ee4d13c.exe"C:\Users\Admin\AppData\Local\Temp\218289af388646b362166b7777e31fe3b3b552cc221541cb1a48a26e7ee4d13c.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 "www.ck444app.net" /tr '"C:\Users\Admin\AppData\Roaming\www.ck444app.net.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 "www.ck444app.net" /tr '"C:\Users\Admin\AppData\Roaming\www.ck444app.net.exe"'3⤵
- System Location Discovery: System Language Discovery
- 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\tmp8A83.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\www.ck444app.net.exe"C:\Users\Admin\AppData\Roaming\www.ck444app.net.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Roaming\www.ck444app.net.exe"C:\Users\Admin\AppData\Roaming\www.ck444app.net.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
tmp8A83.tmp.bat
www.ck444app.net.exe
memory/1340-14-0x0000000074A10000-0x00000000751CC000-memory.dmp
memory/1340-16-0x0000000074A10000-0x00000000751CC000-memory.dmp
memory/4696-0-0x0000000074A22000-0x0000000074A23000-memory.dmp
memory/4696-1-0x0000000000340000-0x0000000000356000-memory.dmp
memory/4696-2-0x0000000074A22000-0x0000000074A23000-memory.dmp
memory/4696-3-0x0000000074A10000-0x00000000751CC000-memory.dmp
memory/4696-4-0x0000000004F60000-0x0000000004FC6000-memory.dmp
memory/4696-5-0x00000000052B0000-0x000000000534C000-memory.dmp
memory/4696-11-0x0000000074A10000-0x00000000751CC000-memory.dmp