General

  • Target

    1a9c27e5be8c58da1c02fc4245a07831d5d431cdd1a91cd35d2dd0ad62da71cd.exe

  • Size

    422KB

  • Sample

    250412-q42vdswks9

  • MD5

    4ef0160b3eb114a94aeedd0bb5716058

  • SHA1

    10cb9fa20dec34fa7ceab8248a0deef8ecb7bcef

  • SHA256

    1a9c27e5be8c58da1c02fc4245a07831d5d431cdd1a91cd35d2dd0ad62da71cd

  • SHA512

    86f4ac8d77a1d50b4ebc74e1992f9487ff1abb3b4e275f0e7a5355b1111f967d0f74958cf5b8dc673da2d384e5944e60deae7005a1b5f0c4dfdd3aa45cfe2b89

  • SSDEEP

    6144:izOLumbr+/LRsL5whr2FaSSJmo7zYrMFFMk3nwH8nTNFT:iUCaJo7tMowHI

Malware Config

Targets

    • Target

      1a9c27e5be8c58da1c02fc4245a07831d5d431cdd1a91cd35d2dd0ad62da71cd.exe

    • Size

      422KB

    • MD5

      4ef0160b3eb114a94aeedd0bb5716058

    • SHA1

      10cb9fa20dec34fa7ceab8248a0deef8ecb7bcef

    • SHA256

      1a9c27e5be8c58da1c02fc4245a07831d5d431cdd1a91cd35d2dd0ad62da71cd

    • SHA512

      86f4ac8d77a1d50b4ebc74e1992f9487ff1abb3b4e275f0e7a5355b1111f967d0f74958cf5b8dc673da2d384e5944e60deae7005a1b5f0c4dfdd3aa45cfe2b89

    • SSDEEP

      6144:izOLumbr+/LRsL5whr2FaSSJmo7zYrMFFMk3nwH8nTNFT:iUCaJo7tMowHI

    • 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 (9659) 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