General

  • Target

    Jz.exe

  • Size

    7.5MB

  • Sample

    240416-ap8fmaec3w

  • MD5

    cf7974f3af7e1307a4c325750febb201

  • SHA1

    8b1695eb2481872694ac785ba0a14c8e1bb7398c

  • SHA256

    9d2ad8c13ed60d88296433fd3b911995589ff90c476f4ec028596f43f1ac9fe3

  • SHA512

    150895aaf679304c6715368561e8435f6290fcf714f98dac1f0714e6057304708c6524ed1d323426822b765a2e6d578fc618628d1f9ba998afb6564109600612

  • SSDEEP

    196608:XdgqoyUWq8D+w448SSwzxzgjboADM8IaeTCRI:FawN8SXz+YUIRCRI

Malware Config

Targets

    • Target

      Jz.exe

    • Size

      7.5MB

    • MD5

      cf7974f3af7e1307a4c325750febb201

    • SHA1

      8b1695eb2481872694ac785ba0a14c8e1bb7398c

    • SHA256

      9d2ad8c13ed60d88296433fd3b911995589ff90c476f4ec028596f43f1ac9fe3

    • SHA512

      150895aaf679304c6715368561e8435f6290fcf714f98dac1f0714e6057304708c6524ed1d323426822b765a2e6d578fc618628d1f9ba998afb6564109600612

    • SSDEEP

      196608:XdgqoyUWq8D+w448SSwzxzgjboADM8IaeTCRI:FawN8SXz+YUIRCRI

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • UAC bypass

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

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks