Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
10/09/2026, 10:50
General
- Target AsyncClient.exe
- Size 46KB
- Sample260910-mxpdyasamb
- SHA256 7e9f26e98797975d023ce01195b9ee4088ea5b51805e8fec801180dc73320dcc
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
-
789win7.mobi:6606
-
789win7.mobi:7707
-
789win7.mobi:8808
-
789win7.mobi:8080
-
789win7.mobi:80
-
789win7.mobi:443
-
789win7.mobi:8443
-
789win.indt.in:6606
-
789win.indt.in:7707
-
789win.indt.in:8808
-
789win.indt.in:8080
-
789win.indt.in:80
-
789win.indt.in:443
-
789win.indt.in:8443
-
789win01.dev:6606
-
789win01.dev:7707
-
789win01.dev:8808
-
789win01.dev:8080
-
789win01.dev:80
-
789win01.dev:443
-
KrfQPlnmWc8w
-
delay
3
-
install
true
-
install_file
ChromeUpdate.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
-
C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"C:\Users\Admin\AppData\Local\Temp\AsyncClient.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 "ChromeUpdate" /tr '"C:\Users\Admin\AppData\Roaming\ChromeUpdate.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 "ChromeUpdate" /tr '"C:\Users\Admin\AppData\Roaming\ChromeUpdate.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\tmp112D.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\ChromeUpdate.exe"C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
-
C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"C:\Users\Admin\AppData\Roaming\ChromeUpdate.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
tmp112D.tmp.bat
ChromeUpdate.exe
memory/1068-12-0x0000000075050000-0x000000007580C000-memory.dmp
memory/1068-14-0x0000000075050000-0x000000007580C000-memory.dmp
memory/1316-0-0x0000000075062000-0x0000000075063000-memory.dmp
memory/1316-1-0x0000000000AC0000-0x0000000000AD2000-memory.dmp
memory/1316-2-0x0000000075050000-0x000000007580C000-memory.dmp
memory/1316-3-0x0000000005550000-0x00000000055EC000-memory.dmp
memory/1316-9-0x0000000075050000-0x000000007580C000-memory.dmp