General

  • Target

    a52980a1e728dec4793ae13cb38a3ba1d2f0e0918fbe63f0e165c119faf46a41

  • Size

    266KB

  • Sample

    240626-236bzasbkr

  • MD5

    b3ccb724e433f517dfdf96cbf72bde57

  • SHA1

    f714abdc6c0108f0c5b835a7ab4ce85dae0dfb3a

  • SHA256

    a52980a1e728dec4793ae13cb38a3ba1d2f0e0918fbe63f0e165c119faf46a41

  • SHA512

    13f724462abba675134a50e82572491fed4b3b2f37464f04850bad6b083814e190072beca64161cd8013594b0557d7ff78cad2bacc18c16e4fec3b9b613619cd

  • SSDEEP

    3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/sH:WFzDqa86hV6uRRqX1evPlwAEH

Malware Config

Targets

    • Target

      a52980a1e728dec4793ae13cb38a3ba1d2f0e0918fbe63f0e165c119faf46a41

    • Size

      266KB

    • MD5

      b3ccb724e433f517dfdf96cbf72bde57

    • SHA1

      f714abdc6c0108f0c5b835a7ab4ce85dae0dfb3a

    • SHA256

      a52980a1e728dec4793ae13cb38a3ba1d2f0e0918fbe63f0e165c119faf46a41

    • SHA512

      13f724462abba675134a50e82572491fed4b3b2f37464f04850bad6b083814e190072beca64161cd8013594b0557d7ff78cad2bacc18c16e4fec3b9b613619cd

    • SSDEEP

      3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/sH:WFzDqa86hV6uRRqX1evPlwAEH

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Contains code to disable Windows Defender

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

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables containing artifacts associated with disabling Widnows Defender

    • Detects executables embedding registry key / value combination indicative of disabling Windows Defender features

    • Detects file containing reversed ASEP Autorun registry keys

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks