Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-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 3 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
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Downloads
f6d4f975134a9a43.tmp
wctF0C8.tmp
xkpsm.sys
memory/4248-2-0x0000000000010000-0x0000000000018000-memory.dmp
memory/4256-47-0x00007FF91F4A0000-0x00007FF91F6A9000-memory.dmp
memory/4256-48-0x00007FF91E120000-0x00007FF91E1DD000-memory.dmp
memory/4256-49-0x000001C747CA0000-0x000001C747D4E000-memory.dmp
memory/4256-50-0x00007FF91F260000-0x00007FF91F3FA000-memory.dmp
memory/4256-52-0x00007FF91DB70000-0x00007FF91DEE8000-memory.dmp
memory/4256-51-0x00007FF91E1E0000-0x00007FF91E98E000-memory.dmp
memory/4256-59-0x000001C747CA0000-0x000001C747D4E000-memory.dmp
memory/5096-57-0x0000000005840000-0x00000000058A6000-memory.dmp
memory/5096-65-0x00000000059E0000-0x00000000059F0000-memory.dmp
memory/5096-58-0x00000000059E0000-0x00000000059F0000-memory.dmp
memory/5096-55-0x0000000000D50000-0x0000000001090000-memory.dmp
memory/5096-60-0x00000000068C0000-0x0000000006952000-memory.dmp
memory/5096-61-0x0000000006860000-0x000000000686A000-memory.dmp
memory/5096-64-0x0000000007510000-0x00000000075AC000-memory.dmp
memory/5096-56-0x0000000005E70000-0x0000000006416000-memory.dmp
memory/5096-66-0x0000000007750000-0x0000000007772000-memory.dmp
memory/5096-67-0x0000000007780000-0x0000000007AD7000-memory.dmp
memory/5096-68-0x0000000001530000-0x0000000001552000-memory.dmp
memory/5096-70-0x00000000059E0000-0x00000000059F0000-memory.dmp
memory/5096-69-0x0000000006DE0000-0x0000000006E31000-memory.dmp
memory/5096-72-0x00000000059E0000-0x00000000059F0000-memory.dmp