Analysis
- max time kernel
139s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
19/04/2024, 17:33
General
- Target 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759.exe
- Size 63KB
- Sample240419-v4wetsbe7z
- SHA256 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759
Malware Config
Extracted
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asyncrat
-
| Edit 3LOSH RAT
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Exodus_Market
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leetboy.dynuddns.net:1339
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AsyncMutex_6SI8OkPnk
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delay
3
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install
true
-
install_file
svchos.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
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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 22 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759.exe"C:\Users\Admin\AppData\Local\Temp\447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759.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 "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.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\tmp6B6C.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\svchos.exe"C:\Users\Admin\AppData\Roaming\svchos.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
tmp6B6C.tmp.bat
svchos.exe
memory/2928-3-0x00000000056A0000-0x000000000573C000-memory.dmp
memory/2928-0-0x0000000000C80000-0x0000000000C96000-memory.dmp
memory/2928-8-0x0000000074B00000-0x00000000752B0000-memory.dmp
memory/2928-2-0x0000000005880000-0x0000000005890000-memory.dmp
memory/2928-1-0x0000000074B00000-0x00000000752B0000-memory.dmp
memory/3812-13-0x0000000074A50000-0x0000000075200000-memory.dmp
memory/3812-14-0x0000000002950000-0x0000000002960000-memory.dmp
memory/3812-15-0x00000000055D0000-0x0000000005B74000-memory.dmp
memory/3812-16-0x0000000005200000-0x0000000005292000-memory.dmp
memory/3812-17-0x00000000051A0000-0x00000000051AA000-memory.dmp
memory/3812-20-0x0000000005EF0000-0x0000000005F56000-memory.dmp
memory/3812-21-0x0000000074A50000-0x0000000075200000-memory.dmp
memory/3812-22-0x0000000002950000-0x0000000002960000-memory.dmp