General

  • Target

    Sigmanly_fac561bb0f072d29fe6f8ee6072c905a

  • Size

    353KB

  • Sample

    250414-s7sf8szny3

  • MD5

    fac561bb0f072d29fe6f8ee6072c905a

  • SHA1

    da29dc6bd9ba38d11d46665e42bed7d5c35f48fc

  • SHA256

    3d2013c2ba0aa1c0475cab186ddf3d9005133fe5f88b5d8604b46673b96a40d8

  • SHA512

    0b5dcabd10c9cadbe6b98c3814a73a3d9f285578869821493d6cd7a87d1cdd1144de7a77dce1360b95c4ef0f96895a6f04c9dbbf15a3177866e9c2883b35727d

  • SSDEEP

    6144:heigHPKpV1hH/lRLIRsdyhFNnofZwnADhY+xlgVv3M:UigHUz9lRvyLtiwnZ+xKU

Malware Config

Targets

    • Target

      Sigmanly_fac561bb0f072d29fe6f8ee6072c905a

    • Size

      353KB

    • MD5

      fac561bb0f072d29fe6f8ee6072c905a

    • SHA1

      da29dc6bd9ba38d11d46665e42bed7d5c35f48fc

    • SHA256

      3d2013c2ba0aa1c0475cab186ddf3d9005133fe5f88b5d8604b46673b96a40d8

    • SHA512

      0b5dcabd10c9cadbe6b98c3814a73a3d9f285578869821493d6cd7a87d1cdd1144de7a77dce1360b95c4ef0f96895a6f04c9dbbf15a3177866e9c2883b35727d

    • SSDEEP

      6144:heigHPKpV1hH/lRLIRsdyhFNnofZwnADhY+xlgVv3M:UigHUz9lRvyLtiwnZ+xKU

    • Detect Rhysida ransomware

    • Rhysida

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

    • Rhysida family

    • Clears Windows event logs

    • Renames multiple (9700) 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