General

  • Target

    Perm.exe

  • Size

    276KB

  • Sample

    240914-mwgmps1akg

  • MD5

    5ab1e573561e0605d1535be042dba7f6

  • SHA1

    dc9eb01c5218912b2c80925133fc473c6e8b0557

  • SHA256

    3dde08907e65ec9f83c9446e59eebe1dffa6724a244a951ea39c4a571861dae4

  • SHA512

    2cb86414f4c1e8116b992aa85c58d2531d2e0eb5abc691dd5801f14a1b178dc52dbe3eed34e5f2f3f2ffe4a6f8bd4e490fc5a9071de0bd2c9d5dc19d418f8c66

  • SSDEEP

    6144:3ioZIt1bH9Kgmr6uzzzzdhXV57nWo2RBvQ6VZpZPe:TKr9KgAlhXVdWz2YfU

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:46540

147.185.221.22:46540

Attributes
  • Install_directory

    %AppData%

  • install_file

    perm.exe

Targets

    • Target

      Perm.exe

    • Size

      276KB

    • MD5

      5ab1e573561e0605d1535be042dba7f6

    • SHA1

      dc9eb01c5218912b2c80925133fc473c6e8b0557

    • SHA256

      3dde08907e65ec9f83c9446e59eebe1dffa6724a244a951ea39c4a571861dae4

    • SHA512

      2cb86414f4c1e8116b992aa85c58d2531d2e0eb5abc691dd5801f14a1b178dc52dbe3eed34e5f2f3f2ffe4a6f8bd4e490fc5a9071de0bd2c9d5dc19d418f8c66

    • SSDEEP

      6144:3ioZIt1bH9Kgmr6uzzzzdhXV57nWo2RBvQ6VZpZPe:TKr9KgAlhXVdWz2YfU

    • 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

    • XenArmor Suite

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

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Modifies Windows Firewall

    • 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.

    • UPX packed file

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

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • 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

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks