Analysis
- max time kernel
145s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
26/01/2023, 12:31
General
- Target Oxxgg3mhk1oC0ri.exe
- Size 771KB
- Sample230126-pp2qeade79
- SHA256 c2f91a91c984d5e46cbf5285781ffbe64f7e3326f88ffc9b1415bd956859c8c7
Malware Config
Extracted
-
asyncrat
-
0.5.7B
-
Default
-
198.23.207.34:2023
-
AsyncMutex_6SI8OkPnk
-
delay
3
-
install
false
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
- Async RAT payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Oxxgg3mhk1oC0ri.exe"C:\Users\Admin\AppData\Local\Temp\Oxxgg3mhk1oC0ri.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ykjOLBW.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ykjOLBW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp34C.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmp34C.tmp
memory/2284-150-0x0000000006A70000-0x0000000006A8E000-memory.dmp
memory/2284-152-0x0000000007790000-0x00000000077AA000-memory.dmp
memory/2284-157-0x0000000007AB0000-0x0000000007AB8000-memory.dmp
memory/2284-156-0x0000000007AD0000-0x0000000007AEA000-memory.dmp
memory/2284-155-0x00000000079C0000-0x00000000079CE000-memory.dmp
memory/2284-139-0x0000000004EC0000-0x0000000004EF6000-memory.dmp
memory/2284-146-0x0000000005E30000-0x0000000005E96000-memory.dmp
memory/2284-141-0x0000000005690000-0x0000000005CB8000-memory.dmp
memory/2284-153-0x0000000007800000-0x000000000780A000-memory.dmp
memory/2284-147-0x0000000006470000-0x000000000648E000-memory.dmp
memory/2284-144-0x00000000053B0000-0x00000000053D2000-memory.dmp
memory/2284-151-0x0000000007DD0000-0x000000000844A000-memory.dmp
memory/2284-154-0x0000000007A10000-0x0000000007AA6000-memory.dmp
memory/2284-145-0x0000000005560000-0x00000000055C6000-memory.dmp
memory/2284-148-0x0000000007440000-0x0000000007472000-memory.dmp
memory/2284-149-0x0000000070F70000-0x0000000070FBC000-memory.dmp
memory/3648-132-0x0000000000DC0000-0x0000000000E86000-memory.dmp
memory/3648-134-0x0000000005900000-0x0000000005992000-memory.dmp
memory/3648-133-0x0000000005EB0000-0x0000000006454000-memory.dmp
memory/3648-136-0x0000000005DF0000-0x0000000005E8C000-memory.dmp
memory/3648-135-0x0000000005830000-0x000000000583A000-memory.dmp
memory/3676-143-0x0000000000400000-0x0000000000412000-memory.dmp