Analysis
- max time kernel
148s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
- submitted
20/07/2026, 09:56
General
- Target 3eae55af52d589157779b4d5a2b94a465d7d6c2dedbb89dcb1d48e0bccf88100.exe
- Size 45KB
- Sample260720-lycwvsdy9n
- SHA256 3eae55af52d589157779b4d5a2b94a465d7d6c2dedbb89dcb1d48e0bccf88100
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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103.109.100.136:80
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103.109.100.136:22
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103.109.100.136:8080
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103.109.100.136:8880
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103.109.100.136:2052
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103.109.100.136:2082
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103.109.100.136:2086
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103.109.100.136:2095
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103.109.100.136:443
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103.109.100.136:2053
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103.109.100.136:2083
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103.109.100.136:2087
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103.109.100.136:2096
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103.109.100.136:8443
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z46NYkYp9h0C
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delay
0
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install
true
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install_file
9syyv1.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).
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- 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 31 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\3eae55af52d589157779b4d5a2b94a465d7d6c2dedbb89dcb1d48e0bccf88100.exe"C:\Users\Admin\AppData\Local\Temp\3eae55af52d589157779b4d5a2b94a465d7d6c2dedbb89dcb1d48e0bccf88100.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 "9syyv1" /tr '"C:\Users\Admin\AppData\Roaming\9syyv1.exe"' & exit2⤵
- Executes a command shell one-liner
- 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 "9syyv1" /tr '"C:\Users\Admin\AppData\Roaming\9syyv1.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\tmp3BB7.tmp.bat""2⤵
- Executes a command shell one-liner
- 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\9syyv1.exe"C:\Users\Admin\AppData\Roaming\9syyv1.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Roaming\9syyv1.exe"C:\Users\Admin\AppData\Roaming\9syyv1.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp3BB7.tmp.bat
9syyv1.exe
memory/3188-0-0x0000000075192000-0x0000000075193000-memory.dmp
memory/3188-1-0x0000000000D20000-0x0000000000D32000-memory.dmp
memory/3188-2-0x0000000075180000-0x000000007593C000-memory.dmp
memory/3188-3-0x0000000005820000-0x00000000058BC000-memory.dmp
memory/3188-8-0x0000000075180000-0x000000007593C000-memory.dmp
memory/5040-12-0x0000000075010000-0x00000000757CC000-memory.dmp
memory/5040-14-0x0000000075010000-0x00000000757CC000-memory.dmp