Analysis
- max time kernel
148s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
06/08/2026, 15:18
General
- Target SoftwareUpdate.exe
- Size 67KB
- Sample260806-spp86athld
- SHA256 c857350c85de6ba0762f92d8a017e1fdc1b91afc39352ba945950f5e11319eff
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
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webga88x.cam:6606
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webga88x.cam:7707
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webga88x.cam:8808
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webga88x.cam:443
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webga88x.cam:80
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992X1RcLRZLo
-
delay
10
-
install
true
-
install_file
SoftwareUpdate.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\SoftwareUpdate.exe"C:\Users\Admin\AppData\Local\Temp\SoftwareUpdate.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 "SoftwareUpdate" /tr '"C:\Users\Admin\AppData\Roaming\SoftwareUpdate.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 "SoftwareUpdate" /tr '"C:\Users\Admin\AppData\Roaming\SoftwareUpdate.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\tmp352F.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\SoftwareUpdate.exe"C:\Users\Admin\AppData\Roaming\SoftwareUpdate.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
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C:\Users\Admin\AppData\Roaming\SoftwareUpdate.exe"C:\Users\Admin\AppData\Roaming\SoftwareUpdate.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
tmp352F.tmp.bat
SoftwareUpdate.exe
memory/1972-13-0x0000000074470000-0x0000000074C2C000-memory.dmp
memory/1972-15-0x0000000074470000-0x0000000074C2C000-memory.dmp
memory/5460-0-0x00000000744B2000-0x00000000744B3000-memory.dmp
memory/5460-1-0x00000000007C0000-0x00000000007D6000-memory.dmp
memory/5460-2-0x00000000744B2000-0x00000000744B3000-memory.dmp
memory/5460-3-0x00000000744A0000-0x0000000074C5C000-memory.dmp
memory/5460-4-0x0000000005220000-0x00000000052BC000-memory.dmp
memory/5460-9-0x00000000744A0000-0x0000000074C5C000-memory.dmp