Analysis
- max time kernel
148s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260706-en - resource tags
- submitted
06/07/2026, 22:43
General
- Target AsyncClient.exe
- Size 48KB
- Sample260706-2newgac12x
- SHA256 8027a424012f66216a8c1f75661bee9ab69bea0834d60311e76699da15deda82
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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2.100.178.45:6606
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tz0xkzfgpLwV
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delay
3
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install
true
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install_file
CupheadZeroXMultiplayerMultiband.exe
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install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Suricata alert: AsyncRAT Malware Default X.509 Certificate Detected - Inbound 2 IoCs
Network activity triggered a Suricata alert
- 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).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Delays execution with timeout.exe 2 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 27 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "CupheadZeroXMultiplayerMultiband" /tr '"C:\Users\Admin\AppData\Roaming\CupheadZeroXMultiplayerMultiband.exe"' & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "CupheadZeroXMultiplayerMultiband" /tr '"C:\Users\Admin\AppData\Roaming\CupheadZeroXMultiplayerMultiband.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp676B.tmp.bat""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\CupheadZeroXMultiplayerMultiband.exe"C:\Users\Admin\AppData\Roaming\CupheadZeroXMultiplayerMultiband.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Roaming\CupheadZeroXMultiplayerMultiband.exe"C:\Users\Admin\AppData\Roaming\CupheadZeroXMultiplayerMultiband.exe"1⤵
- Suricata alert: AsyncRAT Malware Default X.509 Certificate Detected - Inbound
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "CupheadZeroXMultiplayerMultiband"2⤵
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C:\Windows\SysWOW64\schtasks.exeschtasks /delete /f /tn "CupheadZeroXMultiplayerMultiband"3⤵
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3DA6.tmp.bat""2⤵
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
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C:\Windows\system32\sihost.exesihost.exe1⤵
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS2⤵
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
prep_Activatable Class_Hermes_perf.cache
prep_Activatable Class_Hermes_perf.cache
tmp3DA6.tmp.bat
tmp676B.tmp.bat
CupheadZeroXMultiplayerMultiband.exe
memory/2804-189-0x000000000A1A0000-0x000000000A32E000-memory.dmp
memory/4232-2-0x0000000074840000-0x0000000074FFC000-memory.dmp
memory/4232-3-0x0000000005320000-0x0000000005386000-memory.dmp
memory/4232-1-0x0000000000990000-0x00000000009A2000-memory.dmp
memory/4232-9-0x0000000074840000-0x0000000074FFC000-memory.dmp
memory/4232-4-0x00000000057B0000-0x000000000584C000-memory.dmp
memory/4232-0-0x0000000074852000-0x0000000074853000-memory.dmp
memory/4472-45-0x000002BE92690000-0x000002BE926B0000-memory.dmp
memory/4472-26-0x000002BE922C0000-0x000002BE923C0000-memory.dmp
memory/4472-29-0x000002BE82260000-0x000002BE82280000-memory.dmp
memory/4472-25-0x000002BE81E80000-0x000002BE81EA0000-memory.dmp
memory/4472-19-0x000002B67CC70000-0x000002B67CD70000-memory.dmp
memory/4472-18-0x000002B67CC70000-0x000002B67CD70000-memory.dmp
memory/4892-16-0x00000000746D0000-0x0000000074E8C000-memory.dmp
memory/4892-15-0x0000000005AB0000-0x000000000606A000-memory.dmp
memory/4892-192-0x0000000006530000-0x00000000065A6000-memory.dmp
memory/4892-193-0x00000000064B0000-0x0000000006514000-memory.dmp
memory/4892-194-0x0000000006610000-0x000000000662E000-memory.dmp
memory/4892-198-0x00000000746D0000-0x0000000074E8C000-memory.dmp
memory/4892-13-0x00000000746D0000-0x0000000074E8C000-memory.dmp