Analysis
- max time kernel
131s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
15/04/2022, 01:04
General
- Target b097152c915056f81d69ceba4f124165b942c4b6d6c426aaa273c6d183dde443.exe
- Size 487KB
- Sample220415-be1hpsafe6
- SHA256 b097152c915056f81d69ceba4f124165b942c4b6d6c426aaa273c6d183dde443
Malware Config
Extracted
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matiex
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https://api.telegram.org/bot1428011164:AAFKIFGek20EZJPbNxOt7K2R-Cf-IiVGehs/sendMessage?chat_id=1280541017
Signatures
- Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
- Matiex Main Payload 2 IoCs
- Meta Stealer Stealer
Meta Stealer steals passwords stored in browsers, written in C++.
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b097152c915056f81d69ceba4f124165b942c4b6d6c426aaa273c6d183dde443.exe"C:\Users\Admin\AppData\Local\Temp\b097152c915056f81d69ceba4f124165b942c4b6d6c426aaa273c6d183dde443.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\b097152c915056f81d69ceba4f124165b942c4b6d6c426aaa273c6d183dde443.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
b097152c915056f81d69ceba4f124165b942c4b6d6c426aaa273c6d183dde443.exe.log
memory/1332-133-0x0000000005240000-0x000000000524A000-memory.dmp
memory/1332-132-0x0000000005090000-0x0000000005122000-memory.dmp
memory/1332-130-0x0000000000670000-0x00000000006F0000-memory.dmp
memory/1332-134-0x0000000006140000-0x000000000666C000-memory.dmp
memory/1332-135-0x0000000001000000-0x000000000109C000-memory.dmp
memory/1332-136-0x0000000006050000-0x00000000060B6000-memory.dmp
memory/1332-131-0x0000000005560000-0x0000000005B04000-memory.dmp
memory/3272-138-0x0000000000400000-0x0000000000476000-memory.dmp
memory/3272-141-0x0000000007050000-0x0000000007212000-memory.dmp
memory/3272-142-0x0000000005370000-0x0000000005914000-memory.dmp