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12-08-2021 13:20

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12-08-2021 12:42

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Analysis

  • max time kernel
    147s
  • max time network
    163s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    22-07-2021 15:33

General

  • Target

    g6yzl1NROz6FgZi.exe

  • Size

    1MB

  • MD5

    7a8fa3fe4b23a2ca9612b2b1cf096f6a

  • SHA1

    898d020a309d30d33055978794b2131fa5a18698

  • SHA256

    9dacb6e97f39f81eee74d0779165f4a74e31f27cec1a67d52c541c52ed169d73

  • SHA512

    a77912743ed08c7814d6b3a7a3fea19728561f69891c862ea35957ca4886beded2ffea80342af5d9c7b45a8aa868cd8dc9edcc67b62e1b53f25d5c21be407370

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1769394961:AAF5BB35akL859CwVaXypIqpVsGWlaKvi7A/sendMessage?chat_id=1735544933

Signatures

  • Matiex

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

  • Matiex Main Payload 3 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
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\g6yzl1NROz6FgZi.exe
    "C:\Users\Admin\AppData\Local\Temp\g6yzl1NROz6FgZi.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3016
    • C:\Users\Admin\AppData\Local\Temp\g6yzl1NROz6FgZi.exe
      "C:\Users\Admin\AppData\Local\Temp\g6yzl1NROz6FgZi.exe"
      2⤵
        PID:3700
      • C:\Users\Admin\AppData\Local\Temp\g6yzl1NROz6FgZi.exe
        "C:\Users\Admin\AppData\Local\Temp\g6yzl1NROz6FgZi.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:744
        • C:\Windows\SysWOW64\netsh.exe
          "netsh" wlan show profile
          3⤵
            PID:2004

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Credential Access

      Credentials in Files

      3
      T1081

      Collection

      Data from Local System

      3
      T1005

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\g6yzl1NROz6FgZi.exe.log
        MD5

        90acfd72f14a512712b1a7380c0faf60

        SHA1

        40ba4accb8faa75887e84fb8e38d598dc8cf0f12

        SHA256

        20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

        SHA512

        29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

      • memory/744-125-0x0000000000400000-0x0000000000476000-memory.dmp
        Filesize

        472KB

      • memory/744-135-0x00000000070A0000-0x00000000070A1000-memory.dmp
        Filesize

        4KB

      • memory/744-133-0x0000000005580000-0x000000000561C000-memory.dmp
        Filesize

        624KB

      • memory/744-132-0x0000000005740000-0x0000000005741000-memory.dmp
        Filesize

        4KB

      • memory/744-126-0x000000000047006E-mapping.dmp
      • memory/2004-134-0x0000000000000000-mapping.dmp
      • memory/3016-119-0x0000000004D60000-0x0000000004D61000-memory.dmp
        Filesize

        4KB

      • memory/3016-123-0x0000000005DC0000-0x0000000005E44000-memory.dmp
        Filesize

        528KB

      • memory/3016-124-0x0000000008370000-0x0000000008410000-memory.dmp
        Filesize

        640KB

      • memory/3016-122-0x0000000004D20000-0x0000000004DBC000-memory.dmp
        Filesize

        624KB

      • memory/3016-121-0x0000000004DC0000-0x0000000004DD0000-memory.dmp
        Filesize

        64KB

      • memory/3016-120-0x0000000005090000-0x0000000005091000-memory.dmp
        Filesize

        4KB

      • memory/3016-114-0x0000000000420000-0x0000000000421000-memory.dmp
        Filesize

        4KB

      • memory/3016-118-0x0000000004E90000-0x0000000004E91000-memory.dmp
        Filesize

        4KB

      • memory/3016-117-0x0000000005390000-0x0000000005391000-memory.dmp
        Filesize

        4KB

      • memory/3016-116-0x0000000004DF0000-0x0000000004DF1000-memory.dmp
        Filesize

        4KB