Analysis
- max time kernel
139s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
03/10/2022, 04:36
General
- Target SecuriteInfo.com.Win32.DropperX-gen.6349.exe
- Size 7KB
- Sample221003-e7874agcc7
- SHA256 60b9dfe94376364fa7c7d47ca49cfcdae1b54cfad864098c6cf260f5bf870992
Malware Config
Extracted
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asyncrat
-
0.5.7B
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Default
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fresh02.ddns.net:2245
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AsyncMutex_6SI8OkPnk
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delay
3
-
install
true
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install_file
logs.exe
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install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
- Async RAT payload 1 IoCs
- Executes dropped EXE 1 IoCs
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Adds Run key to start application 2 TTPs 1 IoCs
- 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.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 27 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of WriteProcessMemory 29 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.6349.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.6349.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.6349.exeC:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.6349.exe2⤵
- 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 "logs" /tr '"C:\Users\Admin\AppData\Roaming\logs.exe"' & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "logs" /tr '"C:\Users\Admin\AppData\Roaming\logs.exe"'4⤵
- Creates scheduled task(s)
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2025.tmp.bat""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 34⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\logs.exe"C:\Users\Admin\AppData\Roaming\logs.exe"4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==5⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
SecuriteInfo.com.Win32.DropperX-gen.6349.exe.log
powershell.exe.log
ModuleAnalysisCache
StartupProfileData-NonInteractive
tmp2025.tmp.bat
logs.exe
logs.exe
memory/1276-143-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1276-145-0x0000000005260000-0x00000000052FC000-memory.dmp
memory/2696-132-0x0000000000F10000-0x0000000000F18000-memory.dmp
memory/2696-133-0x0000000006620000-0x0000000006642000-memory.dmp
memory/2956-138-0x0000000006310000-0x0000000006376000-memory.dmp
memory/2956-141-0x0000000006E10000-0x0000000006E2A000-memory.dmp
memory/2956-140-0x0000000008160000-0x00000000087DA000-memory.dmp
memory/2956-139-0x0000000006910000-0x000000000692E000-memory.dmp
memory/2956-137-0x0000000006230000-0x0000000006296000-memory.dmp
memory/2956-136-0x0000000005B60000-0x0000000006188000-memory.dmp
memory/2956-135-0x0000000005350000-0x0000000005386000-memory.dmp