Analysis
- max time kernel
265s - max time network
298s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
02/05/2024, 00:28
General
- Target fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe
- Size 347KB
- Sample240502-asm9vsbe8t
- SHA256 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043
Malware Config
Extracted
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stealc
-
http://185.172.128.151
-
url_path
/7043a0c6a68d9c65.php
Signatures
- Detects Arechclient2 RAT 1 IoCs
Arechclient2.
- SectopRAT
SectopRAT is a remote access trojan first seen in November 2019.
- SectopRAT payload 1 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 3 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 9 IoCs
- Suspicious behavior: MapViewOfSection 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe"C:\Users\Admin\AppData\Local\Temp\fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\u1sk.0.exe"C:\Users\Admin\AppData\Local\Temp\u1sk.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
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C:\Users\Admin\AppData\Local\Temp\u1sk.2\run.exe"C:\Users\Admin\AppData\Local\Temp\u1sk.2\run.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\SysWOW64\cmd.exe3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Are.docx
280b4c14
tmp28F0.tmp
u1sk.0.exe
u1sk.1.zip
UIxMarketPlugin.dll
bunch.dat
relay.dll
run.exe
whale.dbf
mozglue.dll
nss3.dll
memory/1848-171-0x00000000737A0000-0x000000007391B000-memory.dmp
memory/1848-169-0x00007FFF95E30000-0x00007FFF9600B000-memory.dmp
memory/2324-153-0x0000000000400000-0x0000000000470000-memory.dmp
memory/2324-152-0x0000000002ED0000-0x0000000002F3D000-memory.dmp
memory/2324-1-0x0000000002B30000-0x0000000002C30000-memory.dmp
memory/2324-65-0x0000000000400000-0x0000000002B15000-memory.dmp
memory/2324-151-0x0000000000400000-0x0000000002B15000-memory.dmp
memory/2324-3-0x0000000000400000-0x0000000000470000-memory.dmp
memory/2324-2-0x0000000002ED0000-0x0000000002F3D000-memory.dmp
memory/3224-176-0x0000000001300000-0x00000000013C6000-memory.dmp
memory/3224-180-0x0000000005960000-0x00000000059D6000-memory.dmp
memory/3224-195-0x0000000007F90000-0x0000000007F9A000-memory.dmp
memory/3224-185-0x00000000065C0000-0x0000000006626000-memory.dmp
memory/3224-184-0x0000000005E10000-0x0000000005E2E000-memory.dmp
memory/3224-173-0x0000000072150000-0x00000000734D3000-memory.dmp
memory/3224-183-0x0000000006A60000-0x0000000006F8C000-memory.dmp
memory/3224-177-0x0000000005880000-0x0000000005912000-memory.dmp
memory/3224-178-0x0000000005E60000-0x000000000635E000-memory.dmp
memory/3224-182-0x0000000005800000-0x000000000580A000-memory.dmp
memory/3224-179-0x0000000006360000-0x0000000006522000-memory.dmp
memory/3224-181-0x00000000059E0000-0x0000000005A30000-memory.dmp
memory/4596-75-0x0000000000400000-0x0000000002B06000-memory.dmp
memory/4596-76-0x0000000000400000-0x0000000002B06000-memory.dmp
memory/4596-10-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/5100-166-0x00000000737A0000-0x000000007391B000-memory.dmp
memory/5100-159-0x00000000737A0000-0x000000007391B000-memory.dmp
memory/5100-160-0x00007FFF95E30000-0x00007FFF9600B000-memory.dmp