General

  • Target

    4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7

  • Size

    129KB

  • Sample

    230131-wd7kvahd86

  • MD5

    ad7bd61fa8713c110ded845d4ec75d63

  • SHA1

    ca23ef9b14e578f6306010debe7fbe6d4283a73e

  • SHA256

    bd2332cde6a90dcf384e17c215e062db2f0bdefc4534e9cdf385504e92b8c18e

  • SHA512

    a190a01f51fdf6f9b256dafbcd3a2b19c3207d5f96d317b4fc9a78bc89cea7ef514b1b1b1350437efdc9980962116c2ab41b372a5f5e96ad6136bce0b2671267

  • SSDEEP

    3072:GSx/0SYVWKgZe9tZEehI8/8sYBboQASNy2:lx/0hwbs93hv/NYBFNy2

Malware Config

Targets

    • Target

      4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7

    • Size

      132KB

    • MD5

      59ce0baba11893f90527fc951ac69912

    • SHA1

      5857a7dd621c4c3ebb0b5a3bec915d409f70d39f

    • SHA256

      4293c1d8574dc87c58360d6bac3daa182f64f7785c9d41da5e0741d2b1817fc7

    • SHA512

      c5b12797b477e5e5964a78766bb40b1c0d9fdfb8eef1f9aee3df451e3441a40c61d325bf400ba51048811b68e1c70a95f15e4166b7a65a4eca0c624864328647

    • SSDEEP

      3072:phNlHuBafLeBtfCzpta8xlBIOdVo3/4sxLJ10xioP:p3lOYoaja8xzx/0wsxzSi2

    • 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.

    • Creates a large amount of network flows

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

    • 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

System Network Connections Discovery

1
T1049

System Network Configuration Discovery

2
T1016

Network Service Scanning

1
T1046

Command and Control

Dynamic Resolution

1
T1568

Tasks