Analysis

  • max time kernel
    64s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-04-2022 02:31

General

  • Target

    Payment.exe

  • Size

    741KB

  • MD5

    60719dfa735801f3bd3f63b2998e7f76

  • SHA1

    b50765a9e7e5bf5667d1e81ca354e7da32d6990c

  • SHA256

    128077c7c2616b13946e1356a9cf02b6b26433c68a211463eb89dc92cca802b8

  • SHA512

    b973f963f3fe880b41e6c821b25a62810b28f424f34bf8a894766f13ef5732671970ef5e788ce73ce358814aad87c0e4ec168d2a71713e4f6964b2a42897ebd1

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    ebop.website
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    P@ssw0rdP@ssw0rd

Signatures

  • Matiex

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

  • Matiex Main Payload 1 IoCs
  • 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: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:860
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1428

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/860-54-0x0000000000E40000-0x0000000000F00000-memory.dmp

    Filesize

    768KB

  • memory/860-55-0x0000000004F80000-0x0000000004FFA000-memory.dmp

    Filesize

    488KB

  • memory/860-56-0x0000000076191000-0x0000000076193000-memory.dmp

    Filesize

    8KB

  • memory/860-57-0x0000000000550000-0x0000000000553000-memory.dmp

    Filesize

    12KB

  • memory/1428-58-0x000000000046CE6E-mapping.dmp

  • memory/1428-60-0x0000000000400000-0x0000000000472000-memory.dmp

    Filesize

    456KB