General

  • Target
    build.exe
  • Size 85.6MB
  • Sample260718-m5c1wahs4q
  • SHA256 56ab05c3daa0d6b7b07aecd6070c9124be15827a59d7a92a0d9b0531ec238882
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      build.exe
    • Size 85.6MB
    • SHA256 56ab05c3daa0d6b7b07aecd6070c9124be15827a59d7a92a0d9b0531ec238882
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Modifies WinLogon for persistence

    • Enumerates VirtualBox DLL files

    • Enumerates VirtualBox registry keys

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VirtualBox drivers on disk

    • Modifies boot configuration data using bcdedit

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Looks for VMWare Tools registry key

    • Looks for VMWare drivers on disk

    • Looks for VMWare services registry key.

    • Drops startup file

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Adds Run key to start application

    • 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.

    • Indicator Removal: Clear Persistence

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

    • 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.

    • Enumerates processes with tasklist

    • Executes a VBScript file via the Windows Script Host.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks