Analysis
- max time kernel
292s - max time network
299s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
24/05/2024, 12:33
General
- Target 3caa5f06008365fbecf46198744793c36c42309b49a6324bebe8123be10f87d5.exe
- Size 74KB
- Sample240524-prcjascc64
- SHA256 3caa5f06008365fbecf46198744793c36c42309b49a6324bebe8123be10f87d5
Malware Config
Extracted
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asyncrat
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Venom RAT + HVNC + Stealer + Grabber v6.0.3
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Default
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66.235.168.242:4449
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scgofjarww
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delay
1
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install
true
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install_file
Loader.exe
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install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\3caa5f06008365fbecf46198744793c36c42309b49a6324bebe8123be10f87d5.exe"C:\Users\Admin\AppData\Local\Temp\3caa5f06008365fbecf46198744793c36c42309b49a6324bebe8123be10f87d5.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Loader" /tr '"C:\Users\Admin\AppData\Roaming\Loader.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "Loader" /tr '"C:\Users\Admin\AppData\Roaming\Loader.exe"'3⤵
- Creates scheduled task(s)
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9153.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\Loader.exe"C:\Users\Admin\AppData\Roaming\Loader.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmp9153.tmp.bat
Loader.exe
DataLogs.conf
memory/3164-0-0x00007FFDAE393000-0x00007FFDAE395000-memory.dmp
memory/3164-1-0x0000000000500000-0x0000000000518000-memory.dmp
memory/3164-3-0x00007FFDAE390000-0x00007FFDAEE51000-memory.dmp
memory/3164-8-0x00007FFDAE390000-0x00007FFDAEE51000-memory.dmp
memory/3164-9-0x00007FFDAE390000-0x00007FFDAEE51000-memory.dmp