General

  • Target
    TheChoicerVoicer.zip
  • Size 116.3MB
  • Sample260817-rxk4qsbh79
  • SHA256 853e1bc6b7031d7e126a2a306da998c9e3a8d30cae2f21b8a700594eb47dbe61
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      TheChoicerVoicer.zip
    • Size 116.3MB
    • SHA256 853e1bc6b7031d7e126a2a306da998c9e3a8d30cae2f21b8a700594eb47dbe61
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Windows security bypass

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Prevents Microsoft Defender from scanning certain paths by adding an exclusion.

      Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.

    • System Binary Proxy Execution: Rundll32

      Abuse Rundll32 to proxy execution of malicious code.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Hide Artifacts: Hidden Window

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Executes a VBScript file via the Windows Script Host.

MITRE ATT&CK Enterprise v16

Tasks