General

  • Target

    f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

  • Size

    131KB

  • Sample

    230319-1fnyqsac24

  • MD5

    e24eed1dd4d7ad4b9caf66d4a9d36c0c

  • SHA1

    da0f5889a8a8baa03bd99e43da750301d2e919c4

  • SHA256

    657a51c950deb92b32b942e9e757602136870f7e8bab7be952338135a4fb1e5d

  • SHA512

    7012b5f7be72d25c2d140b932cb4cd333761b54215e7dd7970ffa6ad57f6ab467d8850b62d4551a9c5792c77cd135443340da30c4ef1aa8cb9d2b54e5dfe6f8f

  • SSDEEP

    3072:veU5+nWhp6jSZMEX0n5/Q5zRrGtnk4ivgPaywZUG4Y0x7JnaJ:vnEny6SMEXO5/QpRsk4ivgSywUY0xC

Malware Config

Targets

    • Target

      f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

    • Size

      134KB

    • MD5

      3849f30b51a5c49e8d1546960cc206c7

    • SHA1

      61c74136534b826059c63221a2373dc0613a47b7

    • SHA256

      f6c97b1e2ed02578ca1066c8235ba4f991e645f89012406c639dbccc6582eec8

    • SHA512

      43d79293d1fbf716111c27e50df95a0860a0d706079625fa2b8a6b57c5ee06fa7b5b6b8c0acae33714a2181686426728513c990534e44b6f03a05dde0629ab86

    • SSDEEP

      3072:biMYFJvw6Yh0b1gKobtCGCmCRlrisfrYm:fYFJvwe1gKCYVl2szN

    • Contacts a large (19951) 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