General

  • Target

    230815-qwaqyaba29

  • Size

    27KB

  • Sample

    240402-d82zqsfe6x

  • MD5

    f680f45e190c032931f189ab71caecbc

  • SHA1

    02b52470aabee1a8f2700d902e249bf19ec0d945

  • SHA256

    05efe778c9253dc647b2667b4c821426a427607d3676e1d03a7e02c5b1e7279c

  • SHA512

    5647471f0fb9c01f7dd1767fafac4e40409fefac241caa4f64d86e42b7705f623a1cc7be49388dda76144261a3a7d3c42dd04ef134983ef15de0c10ddaef3294

  • SSDEEP

    384:3tWZPzzxAm1vaohWAdZ71+kezxBSKrvylvOy5o91z1rxYlf82vi:O7zxAmphxdZgke26Aho9dre826

Malware Config

Targets

    • Target

      230815-qwaqyaba29

    • Size

      27KB

    • MD5

      f680f45e190c032931f189ab71caecbc

    • SHA1

      02b52470aabee1a8f2700d902e249bf19ec0d945

    • SHA256

      05efe778c9253dc647b2667b4c821426a427607d3676e1d03a7e02c5b1e7279c

    • SHA512

      5647471f0fb9c01f7dd1767fafac4e40409fefac241caa4f64d86e42b7705f623a1cc7be49388dda76144261a3a7d3c42dd04ef134983ef15de0c10ddaef3294

    • SSDEEP

      384:3tWZPzzxAm1vaohWAdZ71+kezxBSKrvylvOy5o91z1rxYlf82vi:O7zxAmphxdZgke26Aho9dre826

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Detects command variations typically used by ransomware

    • Detects executables containing many references to VEEAM. Observed in ransomware

    • Modifies boot configuration data using bcdedit

    • Renames multiple (179) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Disables Task Manager via registry modification

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

MITRE ATT&CK Enterprise v15

Tasks