General

  • Target

    024c922fae15af2813dc921bbdba6126c9c1f09c0c8b6ff27f33aafb586120c4N.exe

  • Size

    3.2MB

  • Sample

    241130-mrpgrawmcq

  • MD5

    590f3c0bd25a3d846e06cac9b630c770

  • SHA1

    f4785f1b39db8c980bf53509972ba63af84fcb9e

  • SHA256

    024c922fae15af2813dc921bbdba6126c9c1f09c0c8b6ff27f33aafb586120c4

  • SHA512

    3b262e63b73bff888e8cd25e3c2630c3686da8ca7cb27ad6168a3be6df7fdeb6da4aa7519973c6e2e5d1d70b6ea1878c8fbb9679b519d807c4f486586a8c4e36

  • SSDEEP

    98304:D+8hH93YWcoUP3Tmbw89JcaiBWDBoX88m55:DNd3zm/y88sSi65

Malware Config

Extracted

Family

xworm

Attributes
  • install_file

    Mason.exe

aes.plain

Targets

    • Target

      024c922fae15af2813dc921bbdba6126c9c1f09c0c8b6ff27f33aafb586120c4N.exe

    • Size

      3.2MB

    • MD5

      590f3c0bd25a3d846e06cac9b630c770

    • SHA1

      f4785f1b39db8c980bf53509972ba63af84fcb9e

    • SHA256

      024c922fae15af2813dc921bbdba6126c9c1f09c0c8b6ff27f33aafb586120c4

    • SHA512

      3b262e63b73bff888e8cd25e3c2630c3686da8ca7cb27ad6168a3be6df7fdeb6da4aa7519973c6e2e5d1d70b6ea1878c8fbb9679b519d807c4f486586a8c4e36

    • SSDEEP

      98304:D+8hH93YWcoUP3Tmbw89JcaiBWDBoX88m55:DNd3zm/y88sSi65

    • Detect Neshta payload

    • Detect Xworm Payload

    • Neshta

      Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

    • Neshta family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Command and Scripting Interpreter: PowerShell

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Loads dropped DLL

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks