General

  • Target

    f746e2e8975cb74d3b9f45412deb4b41ac6500b0aafd16542206522bfcd3d25d

  • Size

    938KB

  • Sample

    250218-j6j9ssypbt

  • MD5

    26c90f6f4604983af87055a371f7da5f

  • SHA1

    642bcd43ccc2abb6ed712a72da4492bd3fb0e095

  • SHA256

    f746e2e8975cb74d3b9f45412deb4b41ac6500b0aafd16542206522bfcd3d25d

  • SHA512

    abad89afe22b5211b68aabb1d141d131eccbd807b2a66a8b43487ad6b98e251f7d6cf3c0fbb94ddaa3139c8fd3bb08eeb1ea58e7399eb8bb033897c20389c4fb

  • SSDEEP

    24576:NqDEvCTbMWu7rQYlBQcBiT6rprG8aytl:NTvC/MTQYxsWR7ayt

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

      f746e2e8975cb74d3b9f45412deb4b41ac6500b0aafd16542206522bfcd3d25d

    • Size

      938KB

    • MD5

      26c90f6f4604983af87055a371f7da5f

    • SHA1

      642bcd43ccc2abb6ed712a72da4492bd3fb0e095

    • SHA256

      f746e2e8975cb74d3b9f45412deb4b41ac6500b0aafd16542206522bfcd3d25d

    • SHA512

      abad89afe22b5211b68aabb1d141d131eccbd807b2a66a8b43487ad6b98e251f7d6cf3c0fbb94ddaa3139c8fd3bb08eeb1ea58e7399eb8bb033897c20389c4fb

    • SSDEEP

      24576:NqDEvCTbMWu7rQYlBQcBiT6rprG8aytl:NTvC/MTQYxsWR7ayt

    • 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