Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
02/10/2026, 07:29
General
- Target upgrade.exe
- Size 112KB
- Sample261002-jbcapswejd
- SHA256 0327b5581a010f8cf86862e356704d7d1c2a2ea68915634159fbc0dd502e36b0
Malware Config
Extracted
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asyncrat
-
0.5.8
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Default
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789bet.systems:8808
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789bet.systems:443
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789bet.systems:80
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789bet.systems:22
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789bet.systems:23
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www.789bet.systems:8808
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www.789bet.systems:443
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www.789bet.systems:80
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www.789bet.systems:22
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www.789bet.systems:23
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8xvaY3Magiln
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delay
3
-
install
true
-
install_file
upgrade.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
- Outbound SSH connection to public host 2 TTPs 6 IoCs
SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.
- 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 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\upgrade.exe"C:\Users\Admin\AppData\Local\Temp\upgrade.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 "upgrade" /tr '"C:\Users\Admin\AppData\Roaming\upgrade.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 "upgrade" /tr '"C:\Users\Admin\AppData\Roaming\upgrade.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\tmpF652.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\upgrade.exe"C:\Users\Admin\AppData\Roaming\upgrade.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Roaming\upgrade.exe"C:\Users\Admin\AppData\Roaming\upgrade.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmpF652.tmp.bat
upgrade.exe
memory/4672-0-0x0000000074492000-0x0000000074493000-memory.dmp
memory/4672-1-0x0000000000F80000-0x0000000000FA2000-memory.dmp
memory/4672-2-0x0000000074480000-0x0000000074C3C000-memory.dmp
memory/4672-3-0x0000000005B10000-0x0000000005BAC000-memory.dmp
memory/4672-9-0x0000000074480000-0x0000000074C3C000-memory.dmp
memory/5416-12-0x0000000074480000-0x0000000074C3C000-memory.dmp
memory/5416-14-0x0000000074480000-0x0000000074C3C000-memory.dmp