Analysis
- max time kernel
119s - max time network
123s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
28/04/2024, 02:15
General
- Target fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe
- Size 347KB
- Sample240428-cpxegaea74
- SHA256 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043
Malware Config
Extracted
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stealc
-
http://185.172.128.76
-
url_path
/8681490a59ad0e34.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++.
- Detect binaries embedding considerable number of MFA browser extension IDs. 1 IoCs
- Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 1 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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).
- Program crash 2 IoCs
- 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⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\u3d4.0.exe"C:\Users\Admin\AppData\Local\Temp\u3d4.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4424 -s 23443⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\u3d4.2\run.exe"C:\Users\Admin\AppData\Local\Temp\u3d4.2\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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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4360 -s 11522⤵
- Program crash
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4360 -ip 43601⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4424 -ip 44241⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
a13f0a68
tmpD3AC.tmp
tmpD3CF.tmp
u3d4.0.exe
u3d4.1.zip
UIxMarketPlugin.dll
bunch.dat
relay.dll
run.exe
whale.dbf
memory/880-186-0x00000000728E0000-0x0000000072A5B000-memory.dmp
memory/880-184-0x00007FFD4E8D0000-0x00007FFD4EAC5000-memory.dmp
memory/1944-181-0x00000000728E0000-0x0000000072A5B000-memory.dmp
memory/1944-119-0x00000000728E0000-0x0000000072A5B000-memory.dmp
memory/1944-129-0x00007FFD4E8D0000-0x00007FFD4EAC5000-memory.dmp
memory/3740-197-0x0000000005570000-0x000000000557A000-memory.dmp
memory/3740-199-0x0000000006270000-0x000000000628E000-memory.dmp
memory/3740-219-0x0000000007B90000-0x0000000007B9A000-memory.dmp
memory/3740-200-0x0000000006360000-0x00000000063C6000-memory.dmp
memory/3740-198-0x0000000006770000-0x0000000006C9C000-memory.dmp
memory/3740-196-0x0000000005660000-0x00000000056B0000-memory.dmp
memory/3740-195-0x00000000055E0000-0x0000000005656000-memory.dmp
memory/3740-188-0x00000000737C0000-0x0000000074A14000-memory.dmp
memory/3740-191-0x0000000000E10000-0x0000000000ED6000-memory.dmp
memory/3740-192-0x00000000054A0000-0x0000000005532000-memory.dmp
memory/3740-193-0x0000000005B90000-0x0000000006134000-memory.dmp
memory/3740-194-0x00000000058B0000-0x0000000005A72000-memory.dmp
memory/4360-2-0x0000000002FB0000-0x000000000301D000-memory.dmp
memory/4360-141-0x0000000000400000-0x0000000002B15000-memory.dmp
memory/4360-3-0x0000000000400000-0x0000000002B15000-memory.dmp
memory/4360-1-0x0000000002BB0000-0x0000000002CB0000-memory.dmp
memory/4424-102-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4424-13-0x0000000001AA0000-0x0000000001BA0000-memory.dmp
memory/4424-14-0x0000000001A60000-0x0000000001A87000-memory.dmp
memory/4424-15-0x0000000000400000-0x0000000001A19000-memory.dmp
memory/4424-180-0x0000000000400000-0x0000000001A19000-memory.dmp