Analysis
- max time kernel
152s - max time network
161s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
27/03/2024, 12:46
General
- Target e1b34d64a5765a02ae949b36ec895606.exe
- Size 562KB
- Sample240327-pztsjsfe4y
- SHA256 1063342a4b01665860de63007e264aab2fc7e4399de6ce3d3146ff4ced1701e8
Malware Config
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
- 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 24 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\e1b34d64a5765a02ae949b36ec895606.exe"C:\Users\Admin\AppData\Local\Temp\e1b34d64a5765a02ae949b36ec895606.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows DeepSea" /tr '"C:\Users\Admin\AppData\Roaming\Windows DeepSea.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "Windows DeepSea" /tr '"C:\Users\Admin\AppData\Roaming\Windows DeepSea.exe"'3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp88C7.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\Windows DeepSea.exe"C:\Users\Admin\AppData\Roaming\Windows DeepSea.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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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=4004 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmp88C7.tmp.bat
Windows DeepSea.exe
memory/1740-3-0x00000000057D0000-0x000000000586C000-memory.dmp
memory/1740-1-0x0000000000CB0000-0x0000000000D42000-memory.dmp
memory/1740-4-0x0000000005870000-0x0000000005902000-memory.dmp
memory/1740-5-0x0000000005A90000-0x0000000005AA0000-memory.dmp
memory/1740-6-0x0000000006050000-0x00000000065F4000-memory.dmp
memory/1740-11-0x0000000075330000-0x0000000075AE0000-memory.dmp
memory/1740-2-0x00000000056C0000-0x0000000005726000-memory.dmp
memory/1740-0-0x0000000075330000-0x0000000075AE0000-memory.dmp
memory/2744-16-0x0000000075290000-0x0000000075A40000-memory.dmp
memory/2744-17-0x0000000004CD0000-0x0000000004CE0000-memory.dmp
memory/2744-18-0x0000000075290000-0x0000000075A40000-memory.dmp
memory/2744-19-0x0000000004CD0000-0x0000000004CE0000-memory.dmp