General

  • Target

    chrome.exe

  • Size

    30KB

  • Sample

    240705-f3r9fstcnk

  • MD5

    b23702b2c5912b2ac9195bb8b66111a9

  • SHA1

    9736c759bc72a6a3877edfe4590f510ec0531e45

  • SHA256

    f2f3581795857543ca15e45a21bb418c9e90e83732d5e84e6d445926d24e8531

  • SHA512

    1ee0fe24a14a0f664e1ffbed821776a6fc979d025b5b6134df76268f8f6d2882322f02f75e2b71ee8ce83a7251089175dea0a44397c850a6dd1cd548cdf2b98e

  • SSDEEP

    768:recbl/b379MYAoRDPI2uBFE9RfOqhFbD:6cxFPI24FE9RfOq/3

Malware Config

Extracted

Family

xworm

Version

3.1

C2

147.185.221.20:60293

Mutex

smKuvpVRBWlupSdG

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target

      chrome.exe

    • Size

      30KB

    • MD5

      b23702b2c5912b2ac9195bb8b66111a9

    • SHA1

      9736c759bc72a6a3877edfe4590f510ec0531e45

    • SHA256

      f2f3581795857543ca15e45a21bb418c9e90e83732d5e84e6d445926d24e8531

    • SHA512

      1ee0fe24a14a0f664e1ffbed821776a6fc979d025b5b6134df76268f8f6d2882322f02f75e2b71ee8ce83a7251089175dea0a44397c850a6dd1cd548cdf2b98e

    • SSDEEP

      768:recbl/b379MYAoRDPI2uBFE9RfOqhFbD:6cxFPI24FE9RfOq/3

    • 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#.

    • 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.

    • 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

    • 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.

MITRE ATT&CK Enterprise v15

Tasks