Analysis
- max time kernel
143s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
10/08/2023, 16:46
General
- Target b62fc62a03e4d6c0eac25a8b104d8064288fdc5665ddc19ba55ed520ab9f2827exe_JC.exe
- Size 74KB
- Sample230810-vaaw2agh8w
- SHA256 b62fc62a03e4d6c0eac25a8b104d8064288fdc5665ddc19ba55ed520ab9f2827
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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147.185.221.16:10735
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wat8758zjtzhrtgh445gk8p
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delay
1
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install
true
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install_file
WindowsCleaner.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 4 IoCs
- 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 30 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b62fc62a03e4d6c0eac25a8b104d8064288fdc5665ddc19ba55ed520ab9f2827exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\b62fc62a03e4d6c0eac25a8b104d8064288fdc5665ddc19ba55ed520ab9f2827exe_JC.exe"1⤵
- 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 "WindowsCleaner" /tr '"C:\Users\Admin\AppData\Roaming\WindowsCleaner.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "WindowsCleaner" /tr '"C:\Users\Admin\AppData\Roaming\WindowsCleaner.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\tmp98F4.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\WindowsCleaner.exe"C:\Users\Admin\AppData\Roaming\WindowsCleaner.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
tmp98F4.tmp.bat
DataLogs.conf
WindowsCleaner.exe
WindowsCleaner.exe
memory/1192-148-0x00007FFD6DBD0000-0x00007FFD6E691000-memory.dmp
memory/1192-149-0x0000000002460000-0x0000000002470000-memory.dmp
memory/1192-150-0x00007FFD6DBD0000-0x00007FFD6E691000-memory.dmp
memory/1192-151-0x0000000002460000-0x0000000002470000-memory.dmp
memory/4924-142-0x00007FFD6DC80000-0x00007FFD6E741000-memory.dmp
memory/4924-141-0x00007FFD8B6F0000-0x00007FFD8B8E5000-memory.dmp
memory/4924-136-0x000000001AFA0000-0x000000001AFB0000-memory.dmp
memory/4924-135-0x00007FFD6DC80000-0x00007FFD6E741000-memory.dmp
memory/4924-133-0x0000000000330000-0x0000000000348000-memory.dmp