Analysis
- max time kernel
12s - max time network
115s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
04/08/2026, 07:17
General
- Target 4028766209f635792912c45a17e8b8af043153e97c20a9b815d96c31c7e27751.exe
- Size 48KB
- Sample260804-h4v3vafb35
- SHA256 4028766209f635792912c45a17e8b8af043153e97c20a9b815d96c31c7e27751
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
-
Y9ChBBCNcSun
-
delay
3
-
install
true
-
install_file
Vanta.exe
-
install_folder
%AppData%
-
local_host
127.0.0.1
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
-
C:\Users\Admin\AppData\Local\Temp\4028766209f635792912c45a17e8b8af043153e97c20a9b815d96c31c7e27751.exe"C:\Users\Admin\AppData\Local\Temp\4028766209f635792912c45a17e8b8af043153e97c20a9b815d96c31c7e27751.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Vanta" /tr '"C:\Users\Admin\AppData\Roaming\Vanta.exe"' & exit2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "Vanta" /tr '"C:\Users\Admin\AppData\Roaming\Vanta.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF052.tmp.bat""2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
-
-
C:\Users\Admin\AppData\Roaming\Vanta.exe"C:\Users\Admin\AppData\Roaming\Vanta.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
-
C:\Users\Admin\AppData\Roaming\Vanta.exe"C:\Users\Admin\AppData\Roaming\Vanta.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
tmpF052.tmp.bat
Vanta.exe
memory/208-12-0x0000000074E40000-0x00000000755FC000-memory.dmp
memory/208-14-0x0000000074E40000-0x00000000755FC000-memory.dmp
memory/3124-0-0x0000000075052000-0x0000000075053000-memory.dmp
memory/3124-1-0x0000000000B40000-0x0000000000B52000-memory.dmp
memory/3124-2-0x0000000075040000-0x00000000757FC000-memory.dmp
memory/3124-3-0x00000000056A0000-0x000000000573C000-memory.dmp
memory/3124-8-0x0000000075040000-0x00000000757FC000-memory.dmp