Analysis

  • max time kernel
    106s
  • max time network
    108s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 11:14

General

  • Target

    1XrdOdPqR6jBVMu.exe

  • Size

    507KB

  • MD5

    e5a4d65f4234001c405be18760073317

  • SHA1

    9aaf994aa6cee464fde60749d9a1aba698199b41

  • SHA256

    021f4846815c6c2c0fcd2a808054c52c0569526bd4fb049b47ceb061e822d354

  • SHA512

    27892695e298ac1be6f982b97be4a9da56ed31031c3cb83d8e98815d1676442672aa3626a8a14782e638fa988a96dcb3229c72356374f7193fc8ee7469fdcc69

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    kin.hosting-mexico.net
  • Port:
    26
  • Username:
    rm@timbradompresarial.com
  • Password:
    VN=m3-pILg4f

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 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
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe
    "C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:240
    • C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe
      "{path}"
      2⤵
        PID:1272
      • C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe
        "{path}"
        2⤵
          PID:1624
        • C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe
          "{path}"
          2⤵
            PID:1320
          • C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe
            "{path}"
            2⤵
            • Accesses Microsoft Outlook profiles
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            • outlook_office_path
            • outlook_win_path
            PID:1196
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1196 -s 1780
              3⤵
              • Program crash
              PID:1944

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        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/240-54-0x00000000001B0000-0x0000000000236000-memory.dmp
          Filesize

          536KB

        • memory/240-55-0x00000000757C1000-0x00000000757C3000-memory.dmp
          Filesize

          8KB

        • memory/240-56-0x00000000004C0000-0x00000000004CA000-memory.dmp
          Filesize

          40KB

        • memory/240-57-0x0000000004E40000-0x0000000004EBC000-memory.dmp
          Filesize

          496KB

        • memory/240-58-0x00000000050F0000-0x000000000518C000-memory.dmp
          Filesize

          624KB

        • memory/1196-59-0x0000000000400000-0x0000000000472000-memory.dmp
          Filesize

          456KB

        • memory/1196-60-0x0000000000400000-0x0000000000472000-memory.dmp
          Filesize

          456KB

        • memory/1196-62-0x0000000000400000-0x0000000000472000-memory.dmp
          Filesize

          456KB

        • memory/1196-63-0x0000000000400000-0x0000000000472000-memory.dmp
          Filesize

          456KB

        • memory/1196-64-0x0000000000400000-0x0000000000472000-memory.dmp
          Filesize

          456KB

        • memory/1196-65-0x000000000046D49E-mapping.dmp
        • memory/1196-67-0x0000000000400000-0x0000000000472000-memory.dmp
          Filesize

          456KB

        • memory/1196-69-0x0000000000400000-0x0000000000472000-memory.dmp
          Filesize

          456KB

        • memory/1944-71-0x0000000000000000-mapping.dmp