Analysis
- max time kernel
141s - max time network
159s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
20/06/2024, 01:40
General
- Target 5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe
- Size 73KB
- Sample240620-b3mlrawdlp
- SHA256 5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311
Malware Config
Extracted
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asyncrat
-
Venom RAT + HVNC + Stealer + Grabber v6.0.2
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Default
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72.5.43.15:4449
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yezcydjwbxouz
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delay
1
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install
true
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install_file
win.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
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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 26 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\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe"C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.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 "win" /tr '"C:\Users\Admin\AppData\Roaming\win.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "win" /tr '"C:\Users\Admin\AppData\Roaming\win.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\tmp2FC5.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\win.exe"C:\Users\Admin\AppData\Roaming\win.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3704 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmp2FC5.tmp.bat
DataLogs.conf
win.exe
memory/4616-0-0x00007FFAE92C3000-0x00007FFAE92C5000-memory.dmp
memory/4616-1-0x0000000000010000-0x0000000000028000-memory.dmp
memory/4616-3-0x00007FFAE92C0000-0x00007FFAE9D81000-memory.dmp
memory/4616-4-0x00007FFAE92C0000-0x00007FFAE9D81000-memory.dmp
memory/4616-9-0x00007FFAE92C0000-0x00007FFAE9D81000-memory.dmp