Analysis
- max time kernel
117s - max time network
118s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
- submitted
29/04/2024, 13:31
General
- Target 4aee9b9dddf220182e1d0d1f00e7797e.exe
- Size 348KB
- Sample240429-qsc2wsbf87
- SHA256 d3426eefc87c0dc419603220907c90dc5db259b94ce235105b298867910c0f83
Malware Config
Extracted
-
stealc
-
http://185.172.128.151
-
url_path
/7043a0c6a68d9c65.php
Signatures
- 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 12 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 7 IoCs
- Suspicious behavior: MapViewOfSection 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 22 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4aee9b9dddf220182e1d0d1f00e7797e.exe"C:\Users\Admin\AppData\Local\Temp\4aee9b9dddf220182e1d0d1f00e7797e.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\u1s0.0.exe"C:\Users\Admin\AppData\Local\Temp\u1s0.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\u1s0.2\run.exe"C:\Users\Admin\AppData\Local\Temp\u1s0.2\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
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\SysWOW64\cmd.exe3⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
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
-
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
U1S01~1.ZIP
c8c0ea96
tmpA97A.tmp
UIxMarketPlugin.dll
bunch.dat
relay.dll
run.exe
whale.dbf
mozglue.dll
nss3.dll
u1s0.0.exe
memory/1244-185-0x0000000076E80000-0x0000000077029000-memory.dmp
memory/1244-231-0x00000000732F0000-0x0000000073464000-memory.dmp
memory/1548-163-0x0000000076E80000-0x0000000077029000-memory.dmp
memory/1548-162-0x00000000732F0000-0x0000000073464000-memory.dmp
memory/1548-182-0x00000000732F0000-0x0000000073464000-memory.dmp
memory/1580-236-0x0000000000400000-0x00000000004C6000-memory.dmp
memory/1580-233-0x0000000072280000-0x00000000732E2000-memory.dmp
memory/1580-234-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
memory/1580-235-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
memory/2304-144-0x0000000000400000-0x0000000002B15000-memory.dmp
memory/2304-3-0x0000000000400000-0x0000000002B15000-memory.dmp
memory/2304-140-0x0000000002C80000-0x0000000002D80000-memory.dmp
memory/2304-2-0x0000000000230000-0x000000000029D000-memory.dmp
memory/2304-1-0x0000000002C80000-0x0000000002D80000-memory.dmp
memory/2956-20-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2956-181-0x0000000000400000-0x0000000002AF0000-memory.dmp