Analysis
- max time kernel
149s - max time network
142s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
19/04/2026, 09:21
General
- Target J7FLH_KRMAL_SQR.exe
- Size 48KB
- Sample260419-lbhtlaft6m
- SHA256 47aed6e012b359573ad363daee75ef2f43e777ce379a743d522669b8a04f80ce
Malware Config
Extracted
-
asyncrat
-
1.0.7
-
Default
-
188.54.62.60:8848
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188.54.62.60:4782
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DcRatMutex_qwqdanchun
-
delay
1
-
install
true
-
install_file
SystemUpdate.exe
-
install_folder
%AppData%
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local_host
127.0.0.1
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).
- 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 19 IoCs
- Suspicious use of AdjustPrivilegeToken 2 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
-
C:\Users\Admin\AppData\Local\Temp\J7FLH_KRMAL_SQR.exe"C:\Users\Admin\AppData\Local\Temp\J7FLH_KRMAL_SQR.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 "SystemUpdate" /tr '"C:\Users\Admin\AppData\Roaming\SystemUpdate.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "SystemUpdate" /tr '"C:\Users\Admin\AppData\Roaming\SystemUpdate.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp10E3.tmp.bat""2⤵
- 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\Roaming\SystemUpdate.exe"C:\Users\Admin\AppData\Roaming\SystemUpdate.exe"3⤵
- Executes dropped EXE
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-
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C:\Users\Admin\AppData\Roaming\SystemUpdate.exe"C:\Users\Admin\AppData\Roaming\SystemUpdate.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp10E3.tmp.bat
SystemUpdate.exe
memory/4784-20-0x0000000000F50000-0x0000000000F62000-memory.dmp
memory/4784-18-0x0000000000EE0000-0x0000000000F11000-memory.dmp
memory/4784-19-0x0000000000F40000-0x0000000000F4C000-memory.dmp
memory/4796-12-0x00000190E20A0000-0x00000190E20D1000-memory.dmp
memory/5184-8-0x0000000002F70000-0x0000000002F82000-memory.dmp
memory/5184-7-0x0000000002F60000-0x0000000002F6C000-memory.dmp
memory/5184-0-0x0000000000E30000-0x0000000000E42000-memory.dmp
memory/5184-6-0x0000000001710000-0x0000000001741000-memory.dmp
memory/5184-1-0x0000000002FC0000-0x0000000002FD0000-memory.dmp
memory/5668-17-0x0000000002900000-0x0000000002912000-memory.dmp
memory/5668-15-0x00000000011E0000-0x0000000001211000-memory.dmp
memory/5668-16-0x00000000028F0000-0x00000000028FC000-memory.dmp