Analysis
- max time kernel
148s - max time network
146s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
- submitted
10/09/2026, 11:16
General
- Target 08e2d903d3d26d5c1f97fb8e4291bff90b973af903dde6b0da964c4f68c8545f.exe
- Size 45KB
- Sample260910-nc6cdsv1fx
- SHA256 08e2d903d3d26d5c1f97fb8e4291bff90b973af903dde6b0da964c4f68c8545f
Malware Config
Extracted
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asyncrat
-
0.5.8
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Default
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indenkleinenhap.nl:443
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indenkleinenhap.nl:8443
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indenkleinenhap.nl:25
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indenkleinenhap.nl:80
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WsPJrbeYZjb0
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delay
3
-
install
true
-
install_file
mu88.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).
- 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\08e2d903d3d26d5c1f97fb8e4291bff90b973af903dde6b0da964c4f68c8545f.exe"C:\Users\Admin\AppData\Local\Temp\08e2d903d3d26d5c1f97fb8e4291bff90b973af903dde6b0da964c4f68c8545f.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 "mu88" /tr '"C:\Users\Admin\AppData\Roaming\mu88.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 "mu88" /tr '"C:\Users\Admin\AppData\Roaming\mu88.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp47BD.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\mu88.exe"C:\Users\Admin\AppData\Roaming\mu88.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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-
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C:\Users\Admin\AppData\Roaming\mu88.exe"C:\Users\Admin\AppData\Roaming\mu88.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
tmp47BD.tmp.bat
mu88.exe
memory/1536-0-0x0000000074D62000-0x0000000074D63000-memory.dmp
memory/1536-1-0x0000000000860000-0x0000000000872000-memory.dmp
memory/1536-2-0x0000000074D50000-0x000000007550C000-memory.dmp
memory/1536-3-0x0000000005400000-0x000000000549C000-memory.dmp
memory/1536-9-0x0000000074D50000-0x000000007550C000-memory.dmp
memory/4136-12-0x0000000074D50000-0x000000007550C000-memory.dmp
memory/4136-14-0x0000000074D50000-0x000000007550C000-memory.dmp