Analysis
- max time kernel
57s - max time network
63s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
24/03/2024, 16:47
General
- Target AuthClient.exe
- Size 45KB
- Sample240324-vaxe2age6s
- SHA256 13f183db5e4f7cbdef0673b81f35e99b712c08c6c545152ab0f8ee1ac140a8b5
Malware Config
Extracted
-
xenorat
-
Vallithebest-32755.portmap.host
-
Xeno_rat_nd8912d
-
delay
2000
-
install_path
temp
-
port
32755
-
startup_name
AuthClient
Signatures
- XenorRat
XenorRat is a remote access trojan written in C#.
- 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.
- Suspicious behavior: EnumeratesProcesses 58 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\AuthClient.exe"C:\Users\Admin\AppData\Local\Temp\AuthClient.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\XenoManager\AuthClient.exe"C:\Users\Admin\AppData\Local\Temp\XenoManager\AuthClient.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /Create /TN "AuthClient" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6A81.tmp" /F3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
AuthClient.exe.log
AuthClient.exe
tmp6A81.tmp
memory/1452-27-0x0000000006320000-0x000000000684C000-memory.dmp
memory/1452-24-0x0000000005C20000-0x0000000005DE2000-memory.dmp
memory/1452-61-0x0000000006AD0000-0x0000000006ADA000-memory.dmp
memory/1452-17-0x0000000004C30000-0x0000000004C40000-memory.dmp
memory/1452-60-0x0000000006A20000-0x0000000006A2A000-memory.dmp
memory/1452-20-0x00000000056E0000-0x0000000005746000-memory.dmp
memory/1452-21-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/1452-22-0x0000000004C30000-0x0000000004C40000-memory.dmp
memory/1452-23-0x0000000005950000-0x0000000005A4A000-memory.dmp
memory/1452-16-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/1452-25-0x0000000005AB0000-0x0000000005B00000-memory.dmp
memory/1452-26-0x0000000005B80000-0x0000000005BF6000-memory.dmp
memory/1452-59-0x0000000006A30000-0x0000000006AC2000-memory.dmp
memory/1452-28-0x0000000005F50000-0x0000000005F6E000-memory.dmp
memory/1452-30-0x0000000006010000-0x00000000060AC000-memory.dmp
memory/1452-57-0x0000000005FC0000-0x0000000005FCC000-memory.dmp
memory/1452-58-0x0000000006F00000-0x00000000074A4000-memory.dmp
memory/1848-0-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1848-1-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/1848-15-0x0000000074B80000-0x0000000075330000-memory.dmp