Analysis
- max time kernel
142s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
24/03/2022, 20:03
General
- Target af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae.exe
- Size 468KB
- Sample220324-yssrcadgc2
- SHA256 af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae
Malware Config
Extracted
-
matiex
-
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 1 IoCs
- 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.
- Drops startup file 1 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 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 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 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\af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae.exe"C:\Users\Admin\AppData\Local\Temp\af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae.exe"{path}"2⤵
- Drops startup file
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
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
memory/408-138-0x0000000000400000-0x0000000000476000-memory.dmp
memory/408-141-0x0000000006D20000-0x0000000006EE2000-memory.dmp
memory/4064-130-0x00000000006F0000-0x000000000076A000-memory.dmp
memory/4064-131-0x00000000057A0000-0x0000000005D44000-memory.dmp
memory/4064-132-0x0000000005100000-0x0000000005192000-memory.dmp
memory/4064-133-0x00000000051C0000-0x00000000051CA000-memory.dmp
memory/4064-134-0x0000000008D50000-0x000000000927C000-memory.dmp
memory/4064-135-0x00000000095F0000-0x000000000968C000-memory.dmp
memory/4064-136-0x00000000096B0000-0x0000000009716000-memory.dmp