Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
18/08/2024, 19:09
General
- Target f8426a8416b86681c417b2025b1c09445cb2997eb34e5d4d5c63c2064e99abea.exe
- Size 821KB
- Sample240818-xt1ynssflk
- SHA256 f8426a8416b86681c417b2025b1c09445cb2997eb34e5d4d5c63c2064e99abea
Malware Config
Extracted
-
asyncrat
-
Venom RAT + HVNC + Stealer + Grabber v6.0.3
-
Default
-
127.0.0.1:4449
-
lol.exe
-
delay
1
-
install
true
-
install_file
lol.exe
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- VenomRAT 7 IoCs
Detects VenomRAT.
- Async RAT payload 1 IoCs
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Modifies registry class 2 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of SetWindowsHookEx 9 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\f8426a8416b86681c417b2025b1c09445cb2997eb34e5d4d5c63c2064e99abea.exe"C:\Users\Admin\AppData\Local\Temp\f8426a8416b86681c417b2025b1c09445cb2997eb34e5d4d5c63c2064e99abea.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\._cache_f8426a8416b86681c417b2025b1c09445cb2997eb34e5d4d5c63c2064e99abea.exe"C:\Users\Admin\AppData\Local\Temp\._cache_f8426a8416b86681c417b2025b1c09445cb2997eb34e5d4d5c63c2064e99abea.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
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C:\ProgramData\Synaptics\Synaptics.exe"C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Synaptics.exe
._cache_f8426a8416b86681c417b2025b1c09445cb2997eb34e5d4d5c63c2064e99abea.exe
79C75E00
xXfZgVba.xlsm
DataLogs.conf
memory/1224-282-0x0000000000400000-0x00000000004D3000-memory.dmp
memory/1224-272-0x0000000000400000-0x00000000004D3000-memory.dmp
memory/1224-250-0x0000000000400000-0x00000000004D3000-memory.dmp
memory/3444-70-0x00007FF9CF3B3000-0x00007FF9CF3B5000-memory.dmp
memory/3444-72-0x0000000000BF0000-0x0000000000C08000-memory.dmp
memory/3444-134-0x00007FF9CF3B0000-0x00007FF9CFE71000-memory.dmp
memory/3444-242-0x00007FF9CF3B0000-0x00007FF9CFE71000-memory.dmp
memory/3884-198-0x00007FF9AD5F0000-0x00007FF9AD600000-memory.dmp
memory/3884-199-0x00007FF9AACE0000-0x00007FF9AACF0000-memory.dmp
memory/3884-200-0x00007FF9AACE0000-0x00007FF9AACF0000-memory.dmp
memory/3884-194-0x00007FF9AD5F0000-0x00007FF9AD600000-memory.dmp
memory/3884-197-0x00007FF9AD5F0000-0x00007FF9AD600000-memory.dmp
memory/3884-196-0x00007FF9AD5F0000-0x00007FF9AD600000-memory.dmp
memory/3884-195-0x00007FF9AD5F0000-0x00007FF9AD600000-memory.dmp
memory/4800-0-0x0000000002370000-0x0000000002371000-memory.dmp
memory/4800-130-0x0000000000400000-0x00000000004D3000-memory.dmp