General

  • Target

    nurik.exe

  • Size

    27.4MB

  • Sample

    241217-n5gjqszkel

  • MD5

    7bfe8c145eecb2d8ca00fe36686cb56a

  • SHA1

    d628047397e0be9600e5ad4d2c5874658f83b403

  • SHA256

    9d115b6e7644393c678e669e54366b47728031f778e24105622b1227fb639a67

  • SHA512

    b4d9a33b168a28a34b98b842a25fd7aee34dc6dd45d14d1343166616caf11d2928e564790aa61c506c575c5afa266b5abc0eb72db89a79b6103d9e9f3f61d8fb

  • SSDEEP

    786432:6rOK5LcBKJfdu0D5ezscdVu6a3zy5bxxEhcMzMw5FpsD:8OKhlgzscDAyxchcm5UD

Malware Config

Extracted

Family

xworm

C2

group-mesa.gl.at.ply.gg:1488

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    svchost.exe

Targets

    • Target

      nurik.exe

    • Size

      27.4MB

    • MD5

      7bfe8c145eecb2d8ca00fe36686cb56a

    • SHA1

      d628047397e0be9600e5ad4d2c5874658f83b403

    • SHA256

      9d115b6e7644393c678e669e54366b47728031f778e24105622b1227fb639a67

    • SHA512

      b4d9a33b168a28a34b98b842a25fd7aee34dc6dd45d14d1343166616caf11d2928e564790aa61c506c575c5afa266b5abc0eb72db89a79b6103d9e9f3f61d8fb

    • SSDEEP

      786432:6rOK5LcBKJfdu0D5ezscdVu6a3zy5bxxEhcMzMw5FpsD:8OKhlgzscDAyxchcm5UD

    • Detect Xworm Payload

    • Exela Stealer

      Exela Stealer is an open source stealer originally written in .NET and later transitioned to Python that was first observed in August 2023.

    • Exelastealer family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Boot or Logon Autostart Execution: Active Setup

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

    • 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

    • Event Triggered Execution: Image File Execution Options Injection

    • Modifies Windows Firewall

    • A potential corporate email address has been identified in the URL: [email protected]

    • Checks computer location settings

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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • 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.

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Checks system information in the registry

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

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Hide Artifacts: Hidden Files and Directories

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks