Analysis
- user interaction
yes - max time kernel
54s - max time network
55s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
24/06/2026, 09:56
General
- Target Check.exe
- Size 969KB
- Sample260624-lye18abs9s
- SHA256 5d695d8a0bb1d919cc77a2aa2488a61797bfa065238160278ee458120630aaf9
Malware Config
Extracted
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asyncrat
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7.0 Cracked by @Poltarbi
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Default
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192.229.87.195:8848
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DcRatMutex_qwqdanchun
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delay
1
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install
false
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install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Family: Coffloader
Coffloader is an open-source beacon loader written in C.
- Async RAT payload 1 IoCs
- Detects Coffloader 2 IoCs
- Downloads MZ/PE file 4 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Start PowerShell.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 39 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of FindShellTrayWindow 36 IoCs
- Suspicious use of SendNotifyMessage 36 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\Check.exe"C:\Users\Admin\AppData\Local\Temp\Check.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 start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\libfabric.dll"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\libfabric.dll"'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\sideloadx64.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\sideloadx64.exe"'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\sideloadx64.exe"C:\Users\Admin\AppData\Local\Temp\sideloadx64.exe"4⤵
- Downloads MZ/PE file
- Executes dropped EXE
- Loads dropped DLL
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C:\Users\Admin\AppData\Local\Temp\Check.exeC:\Users\Admin\AppData\Local\Temp\Check.exe1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\ProgramData\Accounts\a569bf23\WinPer.exeC:\ProgramData\Accounts\a569bf23\WinPer.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
E2C6CBAF0AF08CF203BA74BF0D0AB6D5_EAF5D55D93603A879FA973006301F24F
E2C6CBAF0AF08CF203BA74BF0D0AB6D5_EAF5D55D93603A879FA973006301F24F
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_yh3xtpi2.2sz.ps1
Rpcrt4_dll_9F38E81D12a000.dll
advapi32_dll_1BFDEC59ac000.dll
kernel32_dll_0871FAE9be000.dll
ntdll_dll_A280D1D61f5000.dll
ntdll.pdb
libfabric.dll
sideloadx64.exe
memory/388-111-0x00007FFD09B90000-0x00007FFD09D85000-memory.dmp
memory/388-113-0x00007FFD08CA0000-0x00007FFD08D4C000-memory.dmp
memory/388-115-0x00007FFD08680000-0x00007FFD0873E000-memory.dmp
memory/388-117-0x00007FFD08D50000-0x00007FFD08E7A000-memory.dmp
memory/388-131-0x0000000000400000-0x000000000041B000-memory.dmp
memory/388-139-0x0000000000400000-0x000000000041B000-memory.dmp
memory/2404-103-0x00007FFD08D50000-0x00007FFD08E7A000-memory.dmp
memory/2404-91-0x00007FFD09B90000-0x00007FFD09D85000-memory.dmp
memory/2404-95-0x00007FFD08CA0000-0x00007FFD08D4C000-memory.dmp
memory/2404-99-0x00007FFD08680000-0x00007FFD0873E000-memory.dmp
memory/2492-46-0x000001AFF0540000-0x000001AFF0562000-memory.dmp
memory/3460-29-0x0000025359CF0000-0x0000025359D0E000-memory.dmp
memory/3460-28-0x00007FFD09B90000-0x00007FFD09D85000-memory.dmp
memory/3460-27-0x00007FFD07640000-0x00007FFD07909000-memory.dmp
memory/3460-36-0x00007FFD09B90000-0x00007FFD09D85000-memory.dmp
memory/3460-37-0x00007FFD09B90000-0x00007FFD09D85000-memory.dmp
memory/3460-38-0x00007FFD09B90000-0x00007FFD09D85000-memory.dmp
memory/3460-40-0x00007FF72BBD0000-0x00007FF72BCC8000-memory.dmp
memory/3460-41-0x00007FFD09B90000-0x00007FFD09D85000-memory.dmp
memory/4576-56-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-57-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-68-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-67-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-66-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-65-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-64-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-63-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-62-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4576-58-0x000002A4D8E00000-0x000002A4D8E01000-memory.dmp
memory/4952-0-0x000001873C5C0000-0x000001873C5C1000-memory.dmp
memory/4952-44-0x000001873E210000-0x000001873E21C000-memory.dmp
memory/4952-25-0x000001873C850000-0x000001873C860000-memory.dmp
memory/4952-24-0x000001873C850000-0x000001873C860000-memory.dmp
memory/4952-23-0x000001873E130000-0x000001873E14E000-memory.dmp
memory/4952-22-0x000001873E0B0000-0x000001873E114000-memory.dmp
memory/4952-21-0x000001873E160000-0x000001873E1D6000-memory.dmp
memory/4952-19-0x00007FF72BBD0000-0x00007FF72BCC8000-memory.dmp
memory/4952-20-0x000001873C850000-0x000001873C860000-memory.dmp
memory/4952-18-0x000001873C850000-0x000001873C860000-memory.dmp
memory/4952-17-0x000001873C5C0000-0x000001873C5C1000-memory.dmp
memory/4952-14-0x00007FFD09BDF000-0x00007FFD09BE0000-memory.dmp
memory/4952-13-0x000001873C850000-0x000001873C860000-memory.dmp
memory/4952-12-0x000001873C850000-0x000001873C860000-memory.dmp
memory/4952-11-0x000001873C820000-0x000001873C83C000-memory.dmp
memory/4952-10-0x00007FFCF97C0000-0x00007FFCF97D9000-memory.dmp
memory/4952-9-0x000001873C850000-0x000001873C860000-memory.dmp
memory/4952-2-0x00007FFD07640000-0x00007FFD07909000-memory.dmp
memory/4952-3-0x000001873C5F0000-0x000001873C60E000-memory.dmp
memory/4952-1-0x00007FFD09B90000-0x00007FFD09D85000-memory.dmp