Analysis
- max time kernel
60s - max time network
61s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
07/08/2026, 19:11
General
- Target bc87be83270315a4ff7fbcc57c470c47d88d167367aa7a5b8163c67e18445e3f.exe
- Size 56KB
- Sample260807-xvxmmssarf
- SHA256 bc87be83270315a4ff7fbcc57c470c47d88d167367aa7a5b8163c67e18445e3f
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
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yolly.io:443
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yolly.io:8848
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yolly.io:8080
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kBVPjakHQ19X
-
delay
3
-
install
true
-
install_file
AsyncRat.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 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
-
C:\Users\Admin\AppData\Local\Temp\bc87be83270315a4ff7fbcc57c470c47d88d167367aa7a5b8163c67e18445e3f.exe"C:\Users\Admin\AppData\Local\Temp\bc87be83270315a4ff7fbcc57c470c47d88d167367aa7a5b8163c67e18445e3f.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 "AsyncRat" /tr '"C:\Users\Admin\AppData\Roaming\AsyncRat.exe"' & exit2⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "AsyncRat" /tr '"C:\Users\Admin\AppData\Roaming\AsyncRat.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\tmpFAE5.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\AsyncRat.exe"C:\Users\Admin\AppData\Roaming\AsyncRat.exe"3⤵
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-
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C:\Users\Admin\AppData\Roaming\AsyncRat.exe"C:\Users\Admin\AppData\Roaming\AsyncRat.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmpFAE5.tmp.bat
AsyncRat.exe
memory/840-12-0x0000000074D30000-0x00000000754EC000-memory.dmp
memory/840-14-0x0000000074D30000-0x00000000754EC000-memory.dmp
memory/3624-0-0x0000000074D42000-0x0000000074D43000-memory.dmp
memory/3624-1-0x0000000000750000-0x0000000000764000-memory.dmp
memory/3624-2-0x0000000074D30000-0x00000000754EC000-memory.dmp
memory/3624-3-0x00000000052E0000-0x000000000537C000-memory.dmp
memory/3624-9-0x0000000074D30000-0x00000000754EC000-memory.dmp