General

  • Target
    https://mega.nz/file/UQlmzIwY#5yxn3GXPKK68oe6VwdtODPvaGGQckuBgOJOZrnFBdpA
  • Sample260701-wrb14ads6v

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://78.26.187.35/soft-usage/favicon.ico?0=1200&1=XZKWEGSV&2=i-s&3=61&4=9200&5=6&6=2&7=922000&8=1033

Targets

    • Target
      https://mega.nz/file/UQlmzIwY#5yxn3GXPKK68oe6VwdtODPvaGGQckuBgOJOZrnFBdpA
    • Modifies WinLogon for persistence

    • Checks for common network interception software

      Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.

    • Enumerates VirtualBox registry keys

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Blocks application from running via registry modification

      Adds application to list of disallowed applications.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Event Triggered Execution: Image File Execution Options Injection

    • Disables service(s)

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Stops running service(s)

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Maps connected drives based on registry

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

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    • UPX packed file

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

MITRE ATT&CK Enterprise v16

Tasks