Analysis
- max time kernel
130s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
18/08/2024, 19:02
General
- Target cbf37235e35f3823287ffa5adead151873944b9d540ad4c953d29c4f8711d1fd.exe
- Size 145KB
- Sample240818-xp2dmssdlq
- SHA256 cbf37235e35f3823287ffa5adead151873944b9d540ad4c953d29c4f8711d1fd
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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147.185.221.20:49485
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geuttmzzyleqrt
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delay
3
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install
true
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install_file
msedge.exe
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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 30 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\cbf37235e35f3823287ffa5adead151873944b9d540ad4c953d29c4f8711d1fd.exe"C:\Users\Admin\AppData\Local\Temp\cbf37235e35f3823287ffa5adead151873944b9d540ad4c953d29c4f8711d1fd.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 "msedge" /tr '"C:\Users\Admin\AppData\Roaming\msedge.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "msedge" /tr '"C:\Users\Admin\AppData\Roaming\msedge.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC19A.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\msedge.exe"C:\Users\Admin\AppData\Roaming\msedge.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
tmpC19A.tmp.bat
DataLogs.conf
msedge.exe
memory/2224-0-0x00007FF88A013000-0x00007FF88A015000-memory.dmp
memory/2224-1-0x0000000000BB0000-0x0000000000BDA000-memory.dmp
memory/2224-3-0x00007FF88A010000-0x00007FF88AAD1000-memory.dmp
memory/2224-9-0x00007FF88A010000-0x00007FF88AAD1000-memory.dmp
memory/2224-8-0x00007FF88A010000-0x00007FF88AAD1000-memory.dmp