Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    15-04-2022 01:04

General

  • Target

    a1b432f03f0e88407c71b210a5f013ddeff35a1fd7fe36f5fd03808a9474c766.exe

  • Size

    463KB

  • MD5

    c64e46b8a01abad95b7f9e317778f1da

  • SHA1

    f27d976223aa8bd7bcbc28e59fd2eb75ed33bbb8

  • SHA256

    a1b432f03f0e88407c71b210a5f013ddeff35a1fd7fe36f5fd03808a9474c766

  • SHA512

    6ffe5a9b183a82b088966be5611de20c29ae6c03cfd148d6091e16ce0a7b61a2f64459e2007480c013fbe479588df70ccb500491e70d1b466a8473d6cd58a3c4

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    SMTP.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    yahdera121

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    SMTP.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    yahdera121

Signatures

  • Matiex

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

  • Matiex Main Payload 6 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.

  • 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
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1b432f03f0e88407c71b210a5f013ddeff35a1fd7fe36f5fd03808a9474c766.exe
    "C:\Users\Admin\AppData\Local\Temp\a1b432f03f0e88407c71b210a5f013ddeff35a1fd7fe36f5fd03808a9474c766.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1488
    • C:\Users\Admin\AppData\Local\Temp\a1b432f03f0e88407c71b210a5f013ddeff35a1fd7fe36f5fd03808a9474c766.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1984
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:664

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/664-69-0x0000000075271000-0x0000000075273000-memory.dmp

      Filesize

      8KB

    • memory/664-68-0x0000000000000000-mapping.dmp

    • memory/1488-54-0x0000000000DD0000-0x0000000000E4A000-memory.dmp

      Filesize

      488KB

    • memory/1488-55-0x0000000000680000-0x000000000069C000-memory.dmp

      Filesize

      112KB

    • memory/1488-56-0x0000000005930000-0x00000000059D0000-memory.dmp

      Filesize

      640KB

    • memory/1984-61-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/1984-60-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/1984-62-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/1984-63-0x000000000047093E-mapping.dmp

    • memory/1984-65-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/1984-67-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/1984-58-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/1984-57-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/1984-70-0x00000000050A5000-0x00000000050B6000-memory.dmp

      Filesize

      68KB