Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
03/05/2026, 01:41
General
- Target 請求書.exe
- Size 475KB
- Sample260503-b4ebrsd18l
- SHA256 e861ea62c87d4db82ffe5e7758ccd8247afba603069ecba68a2dfe67cae37b4c
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#.
- Family: VenomRAT
VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.
- Async RAT payload 1 IoCs
- StormKitty payload 2 IoCs
- VenomRAT 2 IoCs
Detects VenomRAT.
- Adds Run key to start application 2 TTPs 1 IoCs
- Executes dropped EXE 2 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious behavior: LoadsDriver 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\請求書.exe"C:\Users\Admin\AppData\Local\Temp\請求書.exe"1⤵
- Adds Run key to start application
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\Temp\xkpsm.sysC:\Windows\Temp\xkpsm.sys1⤵
- Executes dropped EXE
-
C:\Windows\system32\cmd.exe"cmd /c cd /d "C:\Users\Admin\AppData\Roaming\USB30VCBSDRY" & "C:\Users\Admin\AppData\Roaming\USB30VCBSDRY\╦B°.exe""1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
d6a85b7565b53da6.tmp
xkpsm.sys
memory/920-2-0x0000000000010000-0x0000000000018000-memory.dmp
memory/3216-60-0x00000240C4670000-0x00000240C46A0000-memory.dmp
memory/3216-48-0x00007FFA66E70000-0x00007FFA67065000-memory.dmp
memory/3216-49-0x00007FFA65E80000-0x00007FFA65F3E000-memory.dmp
memory/3216-50-0x00007FFA66440000-0x00007FFA664EC000-memory.dmp
memory/3216-51-0x00007FFA664F0000-0x00007FFA6661A000-memory.dmp
memory/3216-53-0x00007FFA65F40000-0x00007FFA66295000-memory.dmp
memory/3216-52-0x00007FFA65100000-0x00007FFA6583F000-memory.dmp
memory/4120-61-0x0000000006070000-0x0000000006102000-memory.dmp
memory/4120-65-0x0000000004EF0000-0x0000000004EF6000-memory.dmp
memory/4120-59-0x0000000005110000-0x0000000005120000-memory.dmp
memory/4120-57-0x0000000005460000-0x0000000005A04000-memory.dmp
memory/4120-56-0x0000000000500000-0x0000000000840000-memory.dmp
memory/4120-62-0x0000000006050000-0x000000000605A000-memory.dmp
memory/4120-63-0x0000000000EA0000-0x0000000000FC0000-memory.dmp
memory/4120-66-0x0000000005110000-0x0000000005120000-memory.dmp
memory/4120-64-0x0000000005260000-0x00000000052DE000-memory.dmp
memory/4120-58-0x0000000004F90000-0x0000000004FF6000-memory.dmp
memory/4120-70-0x0000000006720000-0x00000000067BC000-memory.dmp
memory/4120-71-0x0000000005110000-0x0000000005120000-memory.dmp
memory/4120-72-0x0000000006EB0000-0x0000000006ED2000-memory.dmp
memory/4120-73-0x0000000006EE0000-0x0000000007234000-memory.dmp
memory/4120-74-0x0000000000EA0000-0x0000000000FC0000-memory.dmp
memory/4120-78-0x0000000005110000-0x0000000005120000-memory.dmp
memory/4120-79-0x0000000000EA0000-0x0000000000FC0000-memory.dmp
memory/4120-123-0x0000000000EA0000-0x0000000000FC0000-memory.dmp