Analysis
- max time kernel
150s - max time network
124s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
18/08/2024, 19:05
General
- Target e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
- Size 74KB
- Sample240818-xry2asseml
- SHA256 e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d
Malware Config
Extracted
-
asyncrat
-
Venom RAT + HVNC + Stealer + Grabber v6.0.3
-
Default
-
127.0.0.1:4449
-
127.0.0.1:0
-
85.105.91.170:4449
-
85.105.91.170:0
-
magtzafsfzjwekrq
-
delay
1
-
install
true
-
install_file
aa.exe
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- VenomRAT 2 IoCs
Detects VenomRAT.
- 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).
- 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 59 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
-
C:\Users\Admin\AppData\Local\Temp\e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe"C:\Users\Admin\AppData\Local\Temp\e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8964.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
-
-
C:\Users\Admin\AppData\Roaming\aa.exe"C:\Users\Admin\AppData\Roaming\aa.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
tmp8964.tmp.bat
DataLogs.conf
aa.exe
memory/4940-0-0x00007FFAB0F33000-0x00007FFAB0F35000-memory.dmp
memory/4940-1-0x0000000000BC0000-0x0000000000BD8000-memory.dmp
memory/4940-3-0x00007FFAB0F30000-0x00007FFAB19F1000-memory.dmp
memory/4940-8-0x00007FFAB0F30000-0x00007FFAB19F1000-memory.dmp
memory/4940-9-0x00007FFAB0F30000-0x00007FFAB19F1000-memory.dmp