Analysis
- max time kernel
60s - max time network
61s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
20/10/2026, 19:51
General
- Target 12c17222fac8c5f148c8edf9f51d4945a55835b53a12313a0ff23f86d820e0ec.exe
- Size 47KB
- Sample261020-yk4tmsda76
- SHA256 12c17222fac8c5f148c8edf9f51d4945a55835b53a12313a0ff23f86d820e0ec
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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0KQTTSdvQrM7
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delay
3
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install
true
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install_file
fse.exe
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install_folder
%AppData%
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pastebin_config
https://pastebin.com/raw/s14cUU5G
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- 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 1 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.
Processes
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C:\Users\Admin\AppData\Local\Temp\12c17222fac8c5f148c8edf9f51d4945a55835b53a12313a0ff23f86d820e0ec.exe"C:\Users\Admin\AppData\Local\Temp\12c17222fac8c5f148c8edf9f51d4945a55835b53a12313a0ff23f86d820e0ec.exe"1⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fse" /tr '"C:\Users\Admin\AppData\Roaming\fse.exe"' & exit2⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "fse" /tr '"C:\Users\Admin\AppData\Roaming\fse.exe"'3⤵
- 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\tmp44FE.tmp.bat""2⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\fse.exe"C:\Users\Admin\AppData\Roaming\fse.exe"3⤵
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C:\Users\Admin\AppData\Roaming\fse.exe"C:\Users\Admin\AppData\Roaming\fse.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp44FE.tmp.bat
fse.exe
memory/120-13-0x00000000745D0000-0x0000000074D8C000-memory.dmp
memory/120-15-0x00000000745D0000-0x0000000074D8C000-memory.dmp
memory/5836-0-0x0000000074652000-0x0000000074653000-memory.dmp
memory/5836-1-0x0000000000EB0000-0x0000000000EC2000-memory.dmp
memory/5836-2-0x0000000074640000-0x0000000074DFC000-memory.dmp
memory/5836-3-0x0000000005980000-0x00000000059E6000-memory.dmp
memory/5836-4-0x0000000005E60000-0x0000000005EFC000-memory.dmp
memory/5836-9-0x0000000074640000-0x0000000074DFC000-memory.dmp