Analysis
- max time kernel
147s - max time network
149s - platform
windows10_x64 - resource
win10v20201028 - submitted
12/01/2021, 06:16
General
- Target wCRnCAMZ3yT8BQ2.exe
- Size 938KB
- Sample210112-shwkgn65vs
- SHA256 08c29dfa0ccb747751c5ff3ccde88f7f8a5a87152121f75f60a886b14e86bf00
Malware Config
Extracted
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matiex
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Protocol
smtp
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Host
smtp.privateemail.com
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Port
587
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Username
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Password
MARYolanmauluogwo@ever
Signatures
- Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
- Matiex Main Payload 2 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.
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\wCRnCAMZ3yT8BQ2.exe"C:\Users\Admin\AppData\Local\Temp\wCRnCAMZ3yT8BQ2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uXbGRRvcbY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp350B.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\wCRnCAMZ3yT8BQ2.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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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
memory/880-7-0x0000000004AF0000-0x0000000004AF1000-memory.dmp
memory/880-5-0x0000000004DF0000-0x0000000004DF1000-memory.dmp
memory/880-2-0x0000000073460000-0x0000000073B4E000-memory.dmp
memory/880-8-0x0000000004DE0000-0x0000000004DEE000-memory.dmp
memory/880-9-0x00000000070D0000-0x00000000071B1000-memory.dmp
memory/880-10-0x0000000007260000-0x0000000007261000-memory.dmp
memory/880-3-0x0000000000040000-0x0000000000041000-memory.dmp
memory/880-6-0x0000000004990000-0x0000000004991000-memory.dmp
memory/3152-13-0x0000000000400000-0x0000000000476000-memory.dmp
memory/3152-16-0x0000000073460000-0x0000000073B4E000-memory.dmp
memory/3152-20-0x00000000057A0000-0x00000000057A1000-memory.dmp
memory/3152-25-0x0000000007460000-0x0000000007461000-memory.dmp