Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
01/08/2026, 09:17
General
- Target 2491cfb1b92c9d67c2d1dbbb4062655e682935b5ab7624fe235fbdff70217dc3.exe
- Size 3.3MB
- Sample260801-k83plaxtfv
- SHA256 2491cfb1b92c9d67c2d1dbbb4062655e682935b5ab7624fe235fbdff70217dc3
Malware Config
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Family: StormKitty
StormKitty is an open source info stealer written in C#.
- Async RAT payload 1 IoCs
- StormKitty payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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.
- 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 64 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\2491cfb1b92c9d67c2d1dbbb4062655e682935b5ab7624fe235fbdff70217dc3.exe"C:\Users\Admin\AppData\Local\Temp\2491cfb1b92c9d67c2d1dbbb4062655e682935b5ab7624fe235fbdff70217dc3.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Wihnup" /tr '"C:\Users\Admin\AppData\Local\Temp\Wihnup.exe"' & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "Wihnup" /tr '"C:\Users\Admin\AppData\Local\Temp\Wihnup.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE035.tmp.bat""2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Local\Temp\Wihnup.exe"C:\Users\Admin\AppData\Local\Temp\Wihnup.exe"3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\Wihnup.exe"C:\Users\Admin\AppData\Local\Temp\Wihnup.exe"1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Wihnup.exe
tmpE035.tmp.bat
memory/5540-18-0x000000001B7D0000-0x000000001B7EE000-memory.dmp
memory/5540-17-0x000000001CB30000-0x000000001CBA6000-memory.dmp
memory/5540-16-0x000000001B220000-0x000000001B242000-memory.dmp
memory/5556-3-0x00007FFC24130000-0x00007FFC24AD4000-memory.dmp
memory/5556-6-0x00007FFC24130000-0x00007FFC24AD4000-memory.dmp
memory/5556-7-0x00007FFC24130000-0x00007FFC24AD4000-memory.dmp
memory/5556-11-0x00007FFC24130000-0x00007FFC24AD4000-memory.dmp
memory/5556-5-0x00007FFC24130000-0x00007FFC24AD4000-memory.dmp
memory/5556-4-0x00007FFC24130000-0x00007FFC24AD4000-memory.dmp
memory/5556-0-0x00007FFC242BF000-0x00007FFC242C0000-memory.dmp
memory/5556-2-0x00007FFC24130000-0x00007FFC24AD4000-memory.dmp
memory/5556-1-0x0000000000940000-0x0000000000C8A000-memory.dmp