Analysis
- max time kernel
148s - max time network
146s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260706-en - resource tags
- submitted
07/07/2026, 09:56
General
- Target dc63440ad43b192f91be61a3e7934241fbbf1df0c56c2a19401e08a4eed8b19e.exe
- Size 45KB
- Sample260707-lydhdsfs2v
- SHA256 dc63440ad43b192f91be61a3e7934241fbbf1df0c56c2a19401e08a4eed8b19e
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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5.61.208.88:80
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5.61.208.88:22
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5.61.208.88:8080
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5.61.208.88:8880
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5.61.208.88:2052
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5.61.208.88:2082
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5.61.208.88:2086
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5.61.208.88:2095
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5.61.208.88:443
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5.61.208.88:2053
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5.61.208.88:2083
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5.61.208.88:2087
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5.61.208.88:2096
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5.61.208.88:8443
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ZKBQDgTbvOsr
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delay
0
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install
true
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install_file
f539.exe
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install_folder
%AppData%
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).
- 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 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 27 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\dc63440ad43b192f91be61a3e7934241fbbf1df0c56c2a19401e08a4eed8b19e.exe"C:\Users\Admin\AppData\Local\Temp\dc63440ad43b192f91be61a3e7934241fbbf1df0c56c2a19401e08a4eed8b19e.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 "f539" /tr '"C:\Users\Admin\AppData\Roaming\f539.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 "f539" /tr '"C:\Users\Admin\AppData\Roaming\f539.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\tmp12F2.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\f539.exe"C:\Users\Admin\AppData\Roaming\f539.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Roaming\f539.exe"C:\Users\Admin\AppData\Roaming\f539.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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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
tmp12F2.tmp.bat
f539.exe
memory/4416-14-0x00000000742A0000-0x0000000074A5C000-memory.dmp
memory/4416-12-0x00000000742A0000-0x0000000074A5C000-memory.dmp
memory/4484-35-0x00000163801E0000-0x00000163802E0000-memory.dmp
memory/4484-60-0x0000016394700000-0x0000016394720000-memory.dmp
memory/4484-53-0x0000016383D60000-0x0000016383D80000-memory.dmp
memory/4484-52-0x0000016394450000-0x0000016394470000-memory.dmp
memory/4484-47-0x0000016383CE0000-0x0000016383D00000-memory.dmp
memory/4484-48-0x0000016383EC0000-0x0000016383FC0000-memory.dmp
memory/6056-3-0x00000000054C0000-0x000000000555C000-memory.dmp
memory/6056-9-0x00000000742A0000-0x0000000074A5C000-memory.dmp
memory/6056-2-0x00000000742A0000-0x0000000074A5C000-memory.dmp
memory/6056-0-0x00000000742B2000-0x00000000742B3000-memory.dmp
memory/6056-1-0x0000000000930000-0x0000000000942000-memory.dmp