Analysis
- max time kernel
89s - max time network
137s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
08/05/2022, 06:35
General
- Target 4fbdcc44a7aeee9738c67a3bc33217250d77b2c87125e2f592a55475de66762c.exe
- Size 565KB
- Sample220508-hcc3yscebp
- SHA256 4fbdcc44a7aeee9738c67a3bc33217250d77b2c87125e2f592a55475de66762c
Malware Config
Extracted
-
matiex
-
Protocol
smtp
-
Host
srvc13.turhost.com
-
Port
587
-
Username
-
Password
italik2015
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.
- 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 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
- Program crash 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4fbdcc44a7aeee9738c67a3bc33217250d77b2c87125e2f592a55475de66762c.exe"C:\Users\Admin\AppData\Local\Temp\4fbdcc44a7aeee9738c67a3bc33217250d77b2c87125e2f592a55475de66762c.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\4fbdcc44a7aeee9738c67a3bc33217250d77b2c87125e2f592a55475de66762c.exe"C:\Users\Admin\AppData\Local\Temp\4fbdcc44a7aeee9738c67a3bc33217250d77b2c87125e2f592a55475de66762c.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1960 -s 20363⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1960 -ip 19601⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
4fbdcc44a7aeee9738c67a3bc33217250d77b2c87125e2f592a55475de66762c.exe.log
memory/1960-138-0x0000000000400000-0x0000000000472000-memory.dmp
memory/2024-130-0x0000000000E30000-0x0000000000EC2000-memory.dmp
memory/2024-131-0x0000000005820000-0x00000000058BC000-memory.dmp
memory/2024-132-0x0000000005EF0000-0x0000000006494000-memory.dmp
memory/2024-133-0x00000000059E0000-0x0000000005A72000-memory.dmp
memory/2024-134-0x0000000005900000-0x000000000590A000-memory.dmp
memory/2024-135-0x0000000005A80000-0x0000000005AD6000-memory.dmp
memory/2024-136-0x0000000007330000-0x0000000007396000-memory.dmp