General

  • Target

    Mozi.awigjsbut

  • Size

    131KB

  • Sample

    220425-2m69bsfff6

  • MD5

    3313e9cc72e7cf75851dc62b84ca932c

  • SHA1

    b5f914ad11626070f6cf466069c8d5d9ee25f5bb

  • SHA256

    9e0a15a4318e3e788bad61398b8a40d4916d63ab27b47f3bdbe329c462193600

  • SHA512

    7c3f1cce6b3b2b0464382ad923076da3a2e81463ed25a8d1979caa7c7305ad6681d1df32893c9c973ac6a897f6d638720ed7d73dda5b06c99c1fe669d98960da

Malware Config

Targets

    • Target

      Mozi.awigjsbut

    • Size

      131KB

    • MD5

      3313e9cc72e7cf75851dc62b84ca932c

    • SHA1

      b5f914ad11626070f6cf466069c8d5d9ee25f5bb

    • SHA256

      9e0a15a4318e3e788bad61398b8a40d4916d63ab27b47f3bdbe329c462193600

    • SHA512

      7c3f1cce6b3b2b0464382ad923076da3a2e81463ed25a8d1979caa7c7305ad6681d1df32893c9c973ac6a897f6d638720ed7d73dda5b06c99c1fe669d98960da

    • Contacts a large (31372) 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