Overview

overview

10

Static

static

3

Debug/Test.exe

windows10-1703-x64

10

Sharing

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General

  • Target
    Test.zip
  • Size 11KB
  • Sample240613-j2avkavanq
  • SHA256 c7e7b33d6900152c6ceb9ca72aaf4d023e546b8f6584f4d808a3e31c3870d487
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
xwormexecutionpersistencerattrojan

Malware Config

Extracted

Family

  • xworm

C2

  • https://pastebin.com/raw/qaWffTar:5

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/qaWffTar

Targets

    • Target
      Debug/Test.exe
    • Size 11KB
    • SHA256 0a68284daf94d83f00d44c090b3a5124884661aab8ebdbd8ad553fbfdf008cfd
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    xwormexecutionpersistencerattrojan

    • 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

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Downloads MZ/PE file

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • 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.

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Enterprise v15

Tasks