Analysis

  • max time kernel
    126s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    26-03-2022 07:27

General

  • Target

    680ead0c089f69dff1932fa58d8b72959565a8959a886520720e79be7d5c08d2.exe

  • Size

    11.3MB

  • MD5

    3f3c964143f2609ba953c8648f0ff5b2

  • SHA1

    4eebac115f1a5ecb1061c6eb89e707b512ea4549

  • SHA256

    680ead0c089f69dff1932fa58d8b72959565a8959a886520720e79be7d5c08d2

  • SHA512

    dd8e51f76da847dee7d10af0fd47fe4a4f237a915cdd5c67976ce016ae9c9e7f0419cb1d91d17e7b6765050536de7b886643e380c0dc865fc79c2b79a6b7e754

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    MARYolanmauluogwo@ever

Signatures

  • Matiex

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

  • Matiex Main Payload 1 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Drops startup file 2 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
  • Adds Run key to start application 2 TTPs 2 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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\680ead0c089f69dff1932fa58d8b72959565a8959a886520720e79be7d5c08d2.exe
    "C:\Users\Admin\AppData\Local\Temp\680ead0c089f69dff1932fa58d8b72959565a8959a886520720e79be7d5c08d2.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2424
    • C:\Users\Admin\AppData\Local\Temp\680ead0c089f69dff1932fa58d8b72959565a8959a886520720e79be7d5c08d2.exe
      "C:\Users\Admin\AppData\Local\Temp\680ead0c089f69dff1932fa58d8b72959565a8959a886520720e79be7d5c08d2.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2852
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:3888

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\680ead0c089f69dff1932fa58d8b72959565a8959a886520720e79be7d5c08d2.exe.log

      MD5

      7213132ee53dad637675e72b48bf600b

      SHA1

      da44af392fdff61692d2daaad38671b66cc031f6

      SHA256

      8a548564cb7cd7a7a096517fb3c051d68b0c3465e0fc4e3f10d0f958deff377c

      SHA512

      40f7ecd6569a18e5612634c9e4d5b8d7a3dea6cb4123766e0572b3a018e2f8cbac00af239cc06be3146f79700dfdcf59d82145c08a88c6cf07c025fb3da18b7d

    • memory/2424-130-0x0000000000FE0000-0x0000000001B3E000-memory.dmp

      Filesize

      11.4MB

    • memory/2424-131-0x000000001FD60000-0x000000001FDFC000-memory.dmp

      Filesize

      624KB

    • memory/2424-132-0x0000000006BF0000-0x0000000007194000-memory.dmp

      Filesize

      5.6MB

    • memory/2852-133-0x0000000000000000-mapping.dmp

    • memory/2852-134-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/2852-136-0x00000000059D0000-0x0000000005A36000-memory.dmp

      Filesize

      408KB

    • memory/2852-137-0x0000000007120000-0x00000000071B2000-memory.dmp

      Filesize

      584KB

    • memory/2852-138-0x0000000007090000-0x000000000709A000-memory.dmp

      Filesize

      40KB

    • memory/2852-140-0x0000000007720000-0x00000000078E2000-memory.dmp

      Filesize

      1.8MB

    • memory/2852-141-0x0000000005870000-0x00000000058D6000-memory.dmp

      Filesize

      408KB

    • memory/3888-139-0x0000000000000000-mapping.dmp