Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
01/08/2026, 11:17
General
- Target c81bcc7c540eb1ca814514353dfb17ceed092dac0fb7de7446825287736cc166.exe
- Size 3.3MB
- Sample260801-nd78datdmd
- SHA256 c81bcc7c540eb1ca814514353dfb17ceed092dac0fb7de7446825287736cc166
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
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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\c81bcc7c540eb1ca814514353dfb17ceed092dac0fb7de7446825287736cc166.exe"C:\Users\Admin\AppData\Local\Temp\c81bcc7c540eb1ca814514353dfb17ceed092dac0fb7de7446825287736cc166.exe"1⤵
- Checks computer location settings
- 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\tmp6656.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
tmp6656.tmp.bat
memory/4504-11-0x000000001C300000-0x000000001C322000-memory.dmp
memory/4504-12-0x000000001DD60000-0x000000001DDD6000-memory.dmp
memory/4504-13-0x000000001D150000-0x000000001D16E000-memory.dmp
memory/4772-0-0x0000000000020000-0x000000000036A000-memory.dmp
memory/4772-1-0x000000001C1E0000-0x000000001C1F0000-memory.dmp