General

  • Target

    Mozi.mnzxyghlg

  • Size

    300KB

  • Sample

    220425-29m4zacfgr

  • MD5

    e30a81d66f18f07647397d1defbad11b

  • SHA1

    a7fd1a1d71f7f7b00886741db52c42af0c8873f1

  • SHA256

    b7ba5aa2f8f7781d408e87b2131fa2cc9b95cdf3460f9778229398c9e851772a

  • SHA512

    df7b274ac394ca1192019d35212b076d645e095050930a42342d32d7937b37a7981c19029ecb54d9390bd8a9ba91fb137d52e89b176891ac05809daa1a28b766

Malware Config

Targets

    • Target

      Mozi.mnzxyghlg

    • Size

      300KB

    • MD5

      e30a81d66f18f07647397d1defbad11b

    • SHA1

      a7fd1a1d71f7f7b00886741db52c42af0c8873f1

    • SHA256

      b7ba5aa2f8f7781d408e87b2131fa2cc9b95cdf3460f9778229398c9e851772a

    • SHA512

      df7b274ac394ca1192019d35212b076d645e095050930a42342d32d7937b37a7981c19029ecb54d9390bd8a9ba91fb137d52e89b176891ac05809daa1a28b766

    • suricata: ET MALWARE JAWS Webserver Unauthenticated Shell Command Execution

      suricata: ET MALWARE JAWS Webserver Unauthenticated Shell Command Execution

    • suricata: ET MALWARE Mirai Variant User-Agent (Outbound)

      suricata: ET MALWARE Mirai Variant User-Agent (Outbound)

    • Contacts a large (15946) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • Modifies the Watchdog daemon

      Malware like Mirai modify the Watchdog to prevent it restarting an infected system.

    • Writes file to system bin folder

    • Modifies hosts file

      Adds to hosts file used for mapping hosts to IP addresses.

    • Writes DNS configuration

      Writes data to DNS resolver config file.

    • Enumerates active TCP sockets

      Gets active TCP sockets from /proc virtual filesystem.

    • Modifies init.d

      Adds/modifies system service, likely for persistence.

    • Reads system routing table

      Gets active network interfaces from /proc virtual filesystem.

    • Looks up external IP address via web service

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

    • Reads system network configuration

      Uses contents of /proc filesystem to enumerate network settings.

    • Reads runtime system information

      Reads data from /proc virtual filesystem.

    • Writes file to tmp directory

      Malware often drops required files in the /tmp directory.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hijack Execution Flow

1
T1574

Boot or Logon Autostart Execution

1
T1547

Privilege Escalation

Hijack Execution Flow

1
T1574

Boot or Logon Autostart Execution

1
T1547

Defense Evasion

Impair Defenses

1
T1562

Hijack Execution Flow

1
T1574

Discovery

Network Service Scanning

2
T1046

System Network Connections Discovery

1
T1049

System Network Configuration Discovery

2
T1016

Command and Control

Dynamic Resolution

1
T1568

Tasks