Resubmissions

26-08-2024 07:17

240826-h4bzza1hjc 8

26-08-2024 07:13

240826-h17mgatalq 10

General

  • Target

    b28242123ed2cf6000f0aa036844bd29

  • Size

    87KB

  • Sample

    240314-l2whdabe69

  • MD5

    b28242123ed2cf6000f0aa036844bd29

  • SHA1

    915f41a6c59ed743803ea0ddde08927ffd623586

  • SHA256

    fd563cf7c0c862ab910cf558b5a123354b616e84902d277edf09f378ff6f9786

  • SHA512

    08e5966ca90f08c18c582e6c67d71186a6f9c025fc9f78020e1ce202814de094171111b7f3623d81f7371acdf92206446f7c0425e08e8f5f5b6fd969007d9fca

  • SSDEEP

    1536:0A1KsVHBnVJ0T1rFTQHUPx+nVP7ZSRILMZoXyqqEbzPCAdt6rFTc:0A1rVIrFTOUsnVP7sRILgAPCvrFTc

Malware Config

Targets

    • Target

      b28242123ed2cf6000f0aa036844bd29

    • Size

      87KB

    • MD5

      b28242123ed2cf6000f0aa036844bd29

    • SHA1

      915f41a6c59ed743803ea0ddde08927ffd623586

    • SHA256

      fd563cf7c0c862ab910cf558b5a123354b616e84902d277edf09f378ff6f9786

    • SHA512

      08e5966ca90f08c18c582e6c67d71186a6f9c025fc9f78020e1ce202814de094171111b7f3623d81f7371acdf92206446f7c0425e08e8f5f5b6fd969007d9fca

    • SSDEEP

      1536:0A1KsVHBnVJ0T1rFTQHUPx+nVP7ZSRILMZoXyqqEbzPCAdt6rFTc:0A1rVIrFTOUsnVP7sRILgAPCvrFTc

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • UAC bypass

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Disables Task Manager via registry modification

    • 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.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Mark of the Web detected: This indicates that the page was originally saved or cloned.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks