Analysis
- max time kernel
90s - max time network
117s - platform
windows11-21h2_x64 - resource
win11-20240221-en - resource tags
- submitted
24/03/2024, 16:47
General
- Target AuthClient.exe
- Size 45KB
- Sample240324-vaxe2age6s
- SHA256 13f183db5e4f7cbdef0673b81f35e99b712c08c6c545152ab0f8ee1ac140a8b5
Malware Config
Extracted
-
xenorat
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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#.
- 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 64 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\AuthClient.exe"C:\Users\Admin\AppData\Local\Temp\AuthClient.exe"1⤵
- Suspicious use of WriteProcessMemory
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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\tmp8906.tmp" /F3⤵
- Creates scheduled task(s)
-
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C:\Windows\SysWOW64\cmd.exe"cmd.exe"3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\whoami.exewhoami4⤵
- Suspicious use of AdjustPrivilegeToken
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-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
AuthClient.exe.log
AuthClient.exe
tmp8906.tmp
memory/4540-24-0x0000000006100000-0x00000000061FA000-memory.dmp
memory/4540-26-0x0000000006350000-0x00000000063A0000-memory.dmp
memory/4540-16-0x0000000074460000-0x0000000074C11000-memory.dmp
memory/4540-17-0x0000000005220000-0x0000000005230000-memory.dmp
memory/4540-63-0x0000000001270000-0x000000000127A000-memory.dmp
memory/4540-20-0x0000000005BD0000-0x0000000005C36000-memory.dmp
memory/4540-21-0x0000000005B80000-0x0000000005B88000-memory.dmp
memory/4540-22-0x0000000074460000-0x0000000074C11000-memory.dmp
memory/4540-23-0x0000000005220000-0x0000000005230000-memory.dmp
memory/4540-62-0x00000000058E0000-0x00000000058EA000-memory.dmp
memory/4540-25-0x00000000063D0000-0x0000000006592000-memory.dmp
memory/4540-61-0x0000000006B60000-0x0000000006B6A000-memory.dmp
memory/4540-27-0x0000000006620000-0x0000000006696000-memory.dmp
memory/4540-28-0x0000000006BD0000-0x00000000070FC000-memory.dmp
memory/4540-29-0x00000000066C0000-0x00000000066DE000-memory.dmp
memory/4540-31-0x00000000067B0000-0x000000000684C000-memory.dmp
memory/4540-58-0x0000000006730000-0x000000000673C000-memory.dmp
memory/4540-59-0x00000000076B0000-0x0000000007C56000-memory.dmp
memory/4540-60-0x0000000007100000-0x0000000007192000-memory.dmp
memory/4576-15-0x0000000074460000-0x0000000074C11000-memory.dmp
memory/4576-0-0x0000000000E10000-0x0000000000E22000-memory.dmp
memory/4576-1-0x0000000074460000-0x0000000074C11000-memory.dmp