General

  • Target

    Fixer & Updater.exe

  • Size

    35.9MB

  • Sample

    241215-c88lva1re1

  • MD5

    db651ecb95f586518bbd2b536d331ceb

  • SHA1

    0641554b6ee9c9f6b5865e09630d91a112be78f8

  • SHA256

    0b3a47a99fe3a93f04bb0cfc6928a10eee1b95436aea0cfdd4b88fb002c4cd53

  • SHA512

    74a1cc0827c53c203c4f49b73602ab9c72e7c69f2909f9f0a05c436f2d9f3515683d5c8fd89d1f9c74d2120acf65590bcb517d53c5bc06103fa6aecd6b6623b5

  • SSDEEP

    393216:f1Du8BtuBw2FEL3Z3aLUoQvo6LP/SgbSpYvKEh1EdKwlGQKPJuGsiTfREsrgCYf1:fMguj8Q4VfvLqFTrYw

Malware Config

Extracted

Family

xworm

Attributes
  • install_file

    System Volume Information Prefetch.exe

  • pastebin_url

    https://pastebin.com/raw/ZpWEzbQr

Targets

    • Target

      Fixer & Updater.exe

    • Size

      35.9MB

    • MD5

      db651ecb95f586518bbd2b536d331ceb

    • SHA1

      0641554b6ee9c9f6b5865e09630d91a112be78f8

    • SHA256

      0b3a47a99fe3a93f04bb0cfc6928a10eee1b95436aea0cfdd4b88fb002c4cd53

    • SHA512

      74a1cc0827c53c203c4f49b73602ab9c72e7c69f2909f9f0a05c436f2d9f3515683d5c8fd89d1f9c74d2120acf65590bcb517d53c5bc06103fa6aecd6b6623b5

    • SSDEEP

      393216:f1Du8BtuBw2FEL3Z3aLUoQvo6LP/SgbSpYvKEh1EdKwlGQKPJuGsiTfREsrgCYf1:fMguj8Q4VfvLqFTrYw

    • Contains code to disable Windows Defender

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

    • Detect Xworm Payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • XenArmor Suite

      XenArmor is as suite of password recovery tools for various application.

    • Xenarmor family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks