General

  • Target

    3d37e462a2809c12e5c1126ac2b8f2d2d5f5b940f730973920f3e471e5e21032

  • Size

    938KB

  • Sample

    250221-2n383aspan

  • MD5

    0d9785e60c0a3c69cf5813f12a1b3839

  • SHA1

    c11fbe1fb2023566108ce47e698b1a1483d97f4d

  • SHA256

    3d37e462a2809c12e5c1126ac2b8f2d2d5f5b940f730973920f3e471e5e21032

  • SHA512

    39b102dcfca5042e01bfce8a0e91b56456e9b90ad52fc97cdf2bee6a88d4169e8b791ad15367337e6ee72b1849c6c174d537056ff3c5ff44efd893dbfe111d0b

  • SSDEEP

    24576:ZqDEvCTbMWu7rQYlBQcBiT6rprG8aegl:ZTvC/MTQYxsWR7aeg

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://185.215.113.16/defend/random.exe

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://185.215.113.16/defend/random.exe

Targets

    • Target

      3d37e462a2809c12e5c1126ac2b8f2d2d5f5b940f730973920f3e471e5e21032

    • Size

      938KB

    • MD5

      0d9785e60c0a3c69cf5813f12a1b3839

    • SHA1

      c11fbe1fb2023566108ce47e698b1a1483d97f4d

    • SHA256

      3d37e462a2809c12e5c1126ac2b8f2d2d5f5b940f730973920f3e471e5e21032

    • SHA512

      39b102dcfca5042e01bfce8a0e91b56456e9b90ad52fc97cdf2bee6a88d4169e8b791ad15367337e6ee72b1849c6c174d537056ff3c5ff44efd893dbfe111d0b

    • SSDEEP

      24576:ZqDEvCTbMWu7rQYlBQcBiT6rprG8aegl:ZTvC/MTQYxsWR7aeg

    • Detects Healer an antivirus disabler dropper

    • Healer

      Healer an antivirus disabler dropper.

    • Healer family

    • Modifies Windows Defender DisableAntiSpyware settings

    • Modifies Windows Defender Real-time Protection settings

    • Modifies Windows Defender TamperProtection settings

    • Modifies Windows Defender notification settings

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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Downloads MZ/PE file

    • 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.

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Windows security modification

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks