General

  • Target
    1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40.unknown
  • Size 46KB
  • Sample240630-be22javbrk
  • SHA256 1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40.unknown
    • Size 46KB
    • SHA256 1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40
    • MD5 SHA1 SHA512 SSDEEP
    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Adds new SSH keys

      Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.

    • Deletes system logs

      Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.

    • Executes dropped EXE

    • Flushes firewall rules

      Flushes/ disables firewall rules inside the Linux kernel.

    • Loads a kernel module

      Loads a Linux kernel module, potentially to achieve persistence

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Writes DNS configuration

      Writes data to DNS resolver config file.

    • Attempts to change immutable files

      Modifies inode attributes on the filesystem to allow changing of immutable files.

    • Checks hardware identifiers (DMI)

      Checks DMI information which indicate if the system is a virtual machine.

    • Creates/modifies Cron job

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

    • Deletes log files

      Deletes log files on the system.

    • Disables AppArmor

      Disables AppArmor security module.

    • Disables SELinux

      Disables SELinux security module.

    • Enumerates running processes

      Discovers information about currently running processes on the system

    • Modifies rc script

      Adding/modifying system rc scripts is a common persistence mechanism.

    • Reads hardware information

      Accesses system info like serial numbers, manufacturer names etc.

    • Write file to user bin folder

    • Writes file to system bin folder

MITRE ATT&CK Enterprise v15

Tasks