Analysis

  • max time kernel
    42s
  • max time network
    85s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:43

General

  • Target

    704cd586a50334d379415dc15b96988fb7d44b338a1b7295d4aba47d0fa70782.exe

  • Size

    436KB

  • MD5

    9c6213ed535837b2565babfa5ef7e4c3

  • SHA1

    1c6051b17a669f30522bc9395494d96052689d2d

  • SHA256

    704cd586a50334d379415dc15b96988fb7d44b338a1b7295d4aba47d0fa70782

  • SHA512

    e0c3f3102d2000bdacbf7f7c360da6fa82079422c4da4077caa520f07fe7378d0d952230cbee6539a69e4fe7bfd0988112e72da1ce1f3dc22dd93ab2a103e14b

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    gwenjennie4@gmail.com
  • Password:
    AAAAA123456

Signatures

  • Matiex

    Matiex is a keylogger and infostealer first seen in July 2020.

  • Matiex Main Payload 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 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.

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\704cd586a50334d379415dc15b96988fb7d44b338a1b7295d4aba47d0fa70782.exe
    "C:\Users\Admin\AppData\Local\Temp\704cd586a50334d379415dc15b96988fb7d44b338a1b7295d4aba47d0fa70782.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:1208
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 1744
      2⤵
      • Program crash
      PID:596

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/596-56-0x0000000000000000-mapping.dmp
  • memory/1208-54-0x0000000001090000-0x0000000001104000-memory.dmp
    Filesize

    464KB

  • memory/1208-55-0x0000000075FB1000-0x0000000075FB3000-memory.dmp
    Filesize

    8KB