General

  • Target
    hfsf.elf
  • Size 138KB
  • Sample261030-2lmtassz4m
  • SHA256 beb7e7589979a43a2f763081d8eba2b84419a68c0e5a42b4cf6dc4fafce56733
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      hfsf.elf
    • Size 138KB
    • SHA256 beb7e7589979a43a2f763081d8eba2b84419a68c0e5a42b4cf6dc4fafce56733
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Reads memory of remote process

    • Creates Raw socket

      Creates a socket that captures raw packets at the device level

    • Deletes itself

    • Executes dropped EXE

    • Loads a kernel module

      Loads a Linux kernel module, potentially to achieve persistence

    • OS Credential Dumping

      Adversaries may attempt to dump credentials to use it in password cracking.

    • Traces itself

      Traces itself to prevent debugging attempts

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Checks SCSI settings

      Checks list of SCSI devices which may be used to detect VMware or VirtualBox.

    • Creates/modifies Cron job

      Cron allows running tasks on a schedule, and is commonly used for malware persistence.

    • Enumerates active TCP sockets

      Gets active TCP sockets from /proc virtual filesystem.

    • Enumerates running processes

      Discovers information about currently running processes on the system

    • Modifies init.d

      Adds/modifies system service, likely for persistence.

    • Reads MAC address of network interface

      Fetches the MAC address of active network interfaces. May be used to detect known values for hypervisors.

    • Reads list of loaded kernel modules

      Reads the list of currently loaded kernel modules, possibly to detect virtual environments.

    • Reads network interface configuration

      Fetches information about one or more active network interfaces.

    • Reads system routing table

      Gets active network interfaces from /proc virtual filesystem.

    • Write file to user bin folder

    • Writes file to system bin folder

MITRE ATT&CK Enterprise v16

Tasks