Analysis
- max time kernel
153s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
18/04/2022, 12:53
General
- Target 3345b3680b62996cf0e617dca35459ba8cadd9eacc0cfce472c96e4e2bf1b2ab.exe
- Size 811KB
- Sample220418-p4n3vsgbeq
- SHA256 3345b3680b62996cf0e617dca35459ba8cadd9eacc0cfce472c96e4e2bf1b2ab
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.salujaford.in
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Port
587
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Username
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Password
saluja@#$chd
Extracted
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matiex
-
Protocol
smtp
-
Host
mail.salujaford.in
-
Port
587
-
Username
-
Password
saluja@#$chd
Signatures
- Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
- Matiex Main Payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- 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 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\3345b3680b62996cf0e617dca35459ba8cadd9eacc0cfce472c96e4e2bf1b2ab.exe"C:\Users\Admin\AppData\Local\Temp\3345b3680b62996cf0e617dca35459ba8cadd9eacc0cfce472c96e4e2bf1b2ab.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aHjTIpAw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC39E.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\3345b3680b62996cf0e617dca35459ba8cadd9eacc0cfce472c96e4e2bf1b2ab.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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
Loading Replay Monitor...
Downloads
tmpC39E.tmp
memory/432-130-0x0000000000E50000-0x0000000000F22000-memory.dmp
memory/432-131-0x0000000005EC0000-0x0000000006464000-memory.dmp
memory/432-132-0x0000000005910000-0x00000000059A2000-memory.dmp
memory/432-133-0x00000000058E0000-0x00000000058EA000-memory.dmp
memory/432-134-0x0000000007D60000-0x0000000007DFC000-memory.dmp
memory/2836-138-0x0000000000400000-0x0000000000476000-memory.dmp
memory/2836-139-0x0000000005380000-0x00000000053E6000-memory.dmp
memory/2836-141-0x0000000006720000-0x00000000068E2000-memory.dmp