General

  • Target
    954d8fcd6b74d76999f9ec033ca855ffdab6595be23039f03bc4c6017fa3932c.exe
  • Size 22KB
  • Sample261028-w2bs3ssz7k
  • SHA256 954d8fcd6b74d76999f9ec033ca855ffdab6595be23039f03bc4c6017fa3932c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      954d8fcd6b74d76999f9ec033ca855ffdab6595be23039f03bc4c6017fa3932c.exe
    • Size 22KB
    • SHA256 954d8fcd6b74d76999f9ec033ca855ffdab6595be23039f03bc4c6017fa3932c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Chaos Ransomware

    • Family: Chaos

      Ransomware family first seen in June 2021.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Renames multiple (372) 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.

    • Checks computer location settings

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

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes a file named after a Windows system binary

      The file runs from a user directory while carrying the name of an executable that normally only exists in System32.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Drops desktop.ini file(s)

MITRE ATT&CK Enterprise v16

Tasks