Analysis
- max time kernel
148s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260706-en - resource tags
- submitted
09/07/2026, 14:56
General
- Target AsyncClient.exe
- Size 47KB
- Sample260709-sa6mladt31
- SHA256 73dcd41db859168a02a839eabff50bff9fa866322e37844566ae36550b969f87
Malware Config
Extracted
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asyncrat
-
0.5.8
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Default
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789win2.design:8443
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789win2.design:81
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789win2.design:7878
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789win2.design:8787
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789win2.design:6789
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789win2.design:80
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789win2.design:8080
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789win2.design:443
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huaibei.me:8443
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huaibei.me:81
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huaibei.me:7878
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huaibei.me:8787
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huaibei.me:6789
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huaibei.me:80
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huaibei.me:8080
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huaibei.me:443
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dn88ac.com:8443
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dn88ac.com:81
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dn88ac.com:7878
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dn88ac.com:8787
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Snkl81Zs4T3b
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delay
3
-
install
true
-
install_file
svchost.exe
-
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 3 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
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 "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.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 "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.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\tmp810D.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\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
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C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp810D.tmp.bat
svchost.exe
memory/1060-13-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/1060-15-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/1864-0-0x0000000074E72000-0x0000000074E73000-memory.dmp
memory/1864-1-0x0000000000FE0000-0x0000000000FF2000-memory.dmp
memory/1864-2-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/1864-3-0x0000000005AE0000-0x0000000005B46000-memory.dmp
memory/1864-4-0x0000000005F70000-0x000000000600C000-memory.dmp
memory/1864-10-0x0000000074E60000-0x000000007561C000-memory.dmp