General

  • Target

    f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

  • Size

    131KB

  • Sample

    230101-sydlqaca85

  • MD5

    85eef845bfd8dec0eb3d789b422e521c

  • SHA1

    bcdff57b68880f5a664ac9a7ab6c33e8a72a61eb

  • SHA256

    dbc38f8d60925fcbf957b3c55bf1eec7821e5a7f3ee6d04d796d0b5f2eaea4ff

  • SHA512

    63de21499d8e131f637762858fbcea4cdb24d0b69846db8a2362793d6f84589b01642cb72baebaf5dc04cbd68e3d202dcf5848541f66aad52b9e67d5aba92658

  • SSDEEP

    3072:4eU5+nWhp6jSZMEX0n5/Q5zRrGtnk4ivgPaywZUG4Y0x7Jna8:4nEny6SMEXO5/QpRsk4ivgSywUY0xL

Malware Config

Targets

    • Target

      f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

    • Size

      134KB

    • MD5

      3849f30b51a5c49e8d1546960cc206c7

    • SHA1

      61c74136534b826059c63221a2373dc0613a47b7

    • SHA256

      f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

    • SHA512

      43d79293d1fbf716111c27e50df95a0860a0d706079625fa2b8a6b57c5ee06fa7b5b6b8c0acae33714a2181686426728513c990534e44b6f03a05dde0629ab86

    • SSDEEP

      3072:biMYFJvw6Yh0b1gKobtCGCmCRlrisfrYm:fYFJvwe1gKCYVl2szN

    • 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.

    • 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

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