General

  • Target

    9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527.exe

  • Size

    2.3MB

  • Sample

    240729-mq39hsydje

  • MD5

    0610189e95dbee895c8f710b7abf0bb2

  • SHA1

    433adc0d669b364bcca0d7594eb6f58d80a467bb

  • SHA256

    9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527

  • SHA512

    85c6b68bf39cc3389e1aad5745b318f55b3ee8505060e459bb3d0a2f6d0468f1f3d3335f7a2618627b080eb342681709fa7cfe327c76c1422b2f7360575d1e73

  • SSDEEP

    24576:3aA/tcwqNwOMPhkx3W0CiO2wlqXGMvZ115EGDxsnbMQ:lOwqS0/3qSGEpRUb

Malware Config

Targets

    • Target

      9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527.exe

    • Size

      2.3MB

    • MD5

      0610189e95dbee895c8f710b7abf0bb2

    • SHA1

      433adc0d669b364bcca0d7594eb6f58d80a467bb

    • SHA256

      9c7713c8cd8233686ea25551b426fef708636c7fc2eea2978a9333772aa3b527

    • SHA512

      85c6b68bf39cc3389e1aad5745b318f55b3ee8505060e459bb3d0a2f6d0468f1f3d3335f7a2618627b080eb342681709fa7cfe327c76c1422b2f7360575d1e73

    • SSDEEP

      24576:3aA/tcwqNwOMPhkx3W0CiO2wlqXGMvZ115EGDxsnbMQ:lOwqS0/3qSGEpRUb

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • 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)

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks