Analysis
- max time kernel
148s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
- submitted
01/07/2026, 07:45
General
- Target a0c36da3b0dc9c49c7c8631d9140c86c2d750541e73ef56be2f032764604e28e.exe
- Size 45KB
- Sample260701-jllbcsbv4y
- SHA256 a0c36da3b0dc9c49c7c8631d9140c86c2d750541e73ef56be2f032764604e28e
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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bbnous.com:80
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bbnous.com:22
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bbnous.com:8080
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bbnous.com:8880
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bbnous.com:2052
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bbnous.com:2082
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bbnous.com:2086
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bbnous.com:2095
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bbnous.com:443
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bbnous.com:2053
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bbnous.com:2083
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bbnous.com:2087
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bbnous.com:2096
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bbnous.com:8443
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www.bbnous.com:80
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www.bbnous.com:22
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www.bbnous.com:8080
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www.bbnous.com:8880
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www.bbnous.com:2052
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www.bbnous.com:2082
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mQv4IAHhepcj
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delay
0
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install
true
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install_file
fb7d.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 29 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\a0c36da3b0dc9c49c7c8631d9140c86c2d750541e73ef56be2f032764604e28e.exe"C:\Users\Admin\AppData\Local\Temp\a0c36da3b0dc9c49c7c8631d9140c86c2d750541e73ef56be2f032764604e28e.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 "fb7d" /tr '"C:\Users\Admin\AppData\Roaming\fb7d.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 "fb7d" /tr '"C:\Users\Admin\AppData\Roaming\fb7d.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\tmpC1C.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\fb7d.exe"C:\Users\Admin\AppData\Roaming\fb7d.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
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C:\Users\Admin\AppData\Roaming\fb7d.exe"C:\Users\Admin\AppData\Roaming\fb7d.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
tmpC1C.tmp.bat
fb7d.exe
memory/1096-46-0x0000020A82E80000-0x0000020A82EA0000-memory.dmp
memory/1096-206-0x0000020A80440000-0x0000020A80623000-memory.dmp
memory/1096-30-0x0000020A82C20000-0x0000020A82C40000-memory.dmp
memory/1096-17-0x0000020A801E0000-0x0000020A802E0000-memory.dmp
memory/1096-18-0x0000020A801E0000-0x0000020A802E0000-memory.dmp
memory/1096-31-0x0000020A94080000-0x0000020A94180000-memory.dmp
memory/1096-16-0x0000020A801E0000-0x0000020A802E0000-memory.dmp
memory/1096-62-0x0000020A94900000-0x0000020A94920000-memory.dmp
memory/1704-8-0x0000000074A70000-0x000000007522C000-memory.dmp
memory/1704-0-0x0000000074A82000-0x0000000074A83000-memory.dmp
memory/1704-3-0x0000000002C90000-0x0000000002D2C000-memory.dmp
memory/1704-2-0x0000000074A70000-0x000000007522C000-memory.dmp
memory/1704-1-0x0000000000690000-0x00000000006A2000-memory.dmp
memory/2108-14-0x0000000074A70000-0x000000007522C000-memory.dmp
memory/2108-12-0x0000000074A70000-0x000000007522C000-memory.dmp
memory/5228-205-0x000000000EA70000-0x000000000EB3C000-memory.dmp