Resubmissions

11/03/2025, 15:04

250311-sfzq8swmt58

11/03/2025, 14:20

250311-rnmwzavmx78

11/03/2025, 13:45

250311-q2pr2svyby8

10/03/2025, 19:09

250310-xtytbavzcs8

10/03/2025, 19:01

250310-xplyysvxhz8

10/03/2025, 18:29

250310-w42ghstps78

10/03/2025, 15:21

250310-srpqeazshz4

10/03/2025, 14:53

250310-r9d6ysyxdv8

10/03/2025, 14:46

250310-r5e8fsywes6

09/03/2025, 18:14

250309-wvp25axvd110

General

  • Target
    test.txt
  • Size 18B
  • Sample250209-lstmessqft
  • SHA256 d8fce9dd9c65ca143343f7711859a7cffc3c5e656a8b84108183fb769a12ed8b
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • xworm

C2
  • sddgdsfgeds-43448.portmap.host:43448

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Targets

    • Target
      test.txt
    • Size 18B
    • SHA256 d8fce9dd9c65ca143343f7711859a7cffc3c5e656a8b84108183fb769a12ed8b
    • MD5 SHA1 SHA512
    • 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

    • Command and Scripting Interpreter: PowerShell

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

    • Downloads MZ/PE file

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks computer location settings

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

    • Drops startup file

    • 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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Detected potential entity reuse from brand MICROSOFT.

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks