General

  • Target

    99725ec38fcf92bc99e3bdc578df6e99.exe

  • Size

    4.8MB

  • Sample

    220227-lm9rfsdchq

  • MD5

    99725ec38fcf92bc99e3bdc578df6e99

  • SHA1

    7b7d735d341d6b536a212a3459b1b29c6dac5570

  • SHA256

    65319388913885123db4c6ab82b51eded0a8dfdda606321840734e8f7571950e

  • SHA512

    4bfb2a43a9ee84854d05a01908611baa1ad2005630d1112091bd0c3bfa30ba9e7745f792787620af1fe901ac63e7aa11b4435df796b902c4b49535a397e0786f

Malware Config

Targets

    • Target

      99725ec38fcf92bc99e3bdc578df6e99.exe

    • Size

      4.8MB

    • MD5

      99725ec38fcf92bc99e3bdc578df6e99

    • SHA1

      7b7d735d341d6b536a212a3459b1b29c6dac5570

    • SHA256

      65319388913885123db4c6ab82b51eded0a8dfdda606321840734e8f7571950e

    • SHA512

      4bfb2a43a9ee84854d05a01908611baa1ad2005630d1112091bd0c3bfa30ba9e7745f792787620af1fe901ac63e7aa11b4435df796b902c4b49535a397e0786f

    • Matiex

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

    • Matiex Main Payload

    • suricata: ET MALWARE Matiex Keylogger Exfil Via Telegram

      suricata: ET MALWARE Matiex Keylogger Exfil Via Telegram

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook profiles

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks