General

  • Target

    1888ecf4e90f02ecaaefdb3624825fa2.bin

  • Size

    264KB

  • Sample

    250414-bfazfawmx2

  • MD5

    57ce8025925f12c99b2a5b7f337e2661

  • SHA1

    303ecc30a3cb759c29efe6dd41a9de39f89c2b49

  • SHA256

    c02413c8d2f6cf20728cb4ff088d73d87e592d0f80d3b7ad3ccc8bd05ad6dfa7

  • SHA512

    4a0c3ad6c27dd9150001fad946d64eb2fff07df153ffc81fd0d9019517c66083d102482ff061a896663a2fde18ee8ff508ae60a81238fa1fa34094794c192cf3

  • SSDEEP

    6144:d+BLAZEPacHWRThylA16BQNJxWGKT3+yfgD+RVXl+DW35:cyZEPLHcThys6oFKT3gKVXl+6J

Malware Config

Targets

    • Target

      a78fa1ecadc46870c17e458ab427bad6586b74c7d3e8472f6d8448832ccb20f1.exe

    • Size

      497KB

    • MD5

      1888ecf4e90f02ecaaefdb3624825fa2

    • SHA1

      f347814ce3c6018a342799ff38644d02964635c0

    • SHA256

      a78fa1ecadc46870c17e458ab427bad6586b74c7d3e8472f6d8448832ccb20f1

    • SHA512

      cbe0bc441b41c37098bf98f15ac6795cf7bdde7452b01bbceb0b6e93378db023ac2a1edc3edcfbec1a7404a736b7e343acbb5e2dd7d9ab33450f4d780d20b8b2

    • SSDEEP

      6144:WFoCbN9uRh5W8iZuYtWrJhN7L6aMFNCk0Y+sPgtuMf9opaMPdZXT:0vZTs7N78CrZsPgUG9oDlZ

    • Detect Rhysida ransomware

    • Rhysida

      Rhysida is a ransomware that is written in C++ and discovered in 2023.

    • Rhysida family

    • Clears Windows event logs

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (9766) files with added filename extension

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Hide Artifacts: Hidden Window

      Windows that would typically be displayed when an application carries out an operation can be hidden.

    • Indicator Removal: Clear Persistence

      Clear artifacts associated with previously established persistence like scheduletasks on a host.

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v16

Tasks