Analysis
- max time kernel
140s - max time network
129s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
- submitted
02/05/2024, 06:18
General
- Target MxELZ3saa9aQNufK.exe
- Size 617KB
- Sample240502-g25ntsdd34
- SHA256 8d87d1e973d1ee16d747824541196d5df60298f4a8b0e24cf0ad684bb69b779c
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 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- 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 behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\MxELZ3saa9aQNufK.exe"C:\Users\Admin\AppData\Local\Temp\MxELZ3saa9aQNufK.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- 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
-
C:\Users\Admin\AppData\Local\Temp\MxELZ3saa9aQNufK.exe"C:\Users\Admin\AppData\Local\Temp\MxELZ3saa9aQNufK.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 20203⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 220 -ip 2201⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
MxELZ3saa9aQNufK.exe.log
memory/220-16-0x0000000000400000-0x0000000000472000-memory.dmp
memory/220-22-0x0000000075370000-0x0000000075B20000-memory.dmp
memory/220-21-0x0000000075370000-0x0000000075B20000-memory.dmp
memory/220-20-0x0000000075370000-0x0000000075B20000-memory.dmp
memory/1468-10-0x000000007537E000-0x000000007537F000-memory.dmp
memory/1468-14-0x0000000006BF0000-0x0000000006C66000-memory.dmp
memory/1468-7-0x0000000005A50000-0x0000000005A5A000-memory.dmp
memory/1468-8-0x0000000005C40000-0x0000000005C96000-memory.dmp
memory/1468-9-0x0000000005BF0000-0x0000000005C08000-memory.dmp
memory/1468-0-0x000000007537E000-0x000000007537F000-memory.dmp
memory/1468-11-0x0000000075370000-0x0000000075B20000-memory.dmp
memory/1468-12-0x0000000006B80000-0x0000000006BE8000-memory.dmp
memory/1468-13-0x00000000060E0000-0x00000000060E6000-memory.dmp
memory/1468-6-0x0000000075370000-0x0000000075B20000-memory.dmp
memory/1468-15-0x0000000006CE0000-0x0000000006D46000-memory.dmp
memory/1468-5-0x0000000005B40000-0x0000000005BD2000-memory.dmp
memory/1468-4-0x00000000060F0000-0x0000000006694000-memory.dmp
memory/1468-19-0x0000000075370000-0x0000000075B20000-memory.dmp
memory/1468-3-0x0000000005AA0000-0x0000000005B3C000-memory.dmp
memory/1468-2-0x0000000005640000-0x00000000056BC000-memory.dmp
memory/1468-1-0x0000000000C40000-0x0000000000CE2000-memory.dmp