Resubmissions

18/08/2024, 11:58

240818-n5ltfssgpb10

09/08/2024, 18:46

240809-xe5nbathlk10

09/08/2024, 17:51

240809-wfdesaxcqh10

09/08/2024, 17:48

240809-wdej3axcpf10

09/08/2024, 17:46

240809-wcf2haxcpc10

General

  • Target
    Garnacho.exe
  • Size 42KB
  • Sample240809-wfdesaxcqh
  • SHA256 e1d670f21441ec457fe5c3469781c101c36b4fe04b2ffc1a2e89eb630ff0165a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • mercurialgrabber

C2
  • https://discord.com/api/webhooks/1271524572986081351/vNrcEfNWPV35KkYiGtVh2NaZB_4a4uGfbaOAe2oVr7jGqwHkIB78Aj1CzHbPqMm3KbjD

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • to-reconstruction.gl.at.ply.gg:45235

Mutex
  • 7PQJRDYU7PWRPnXx

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

aes.plain

Targets

    • Target
      Garnacho.exe
    • Size 42KB
    • SHA256 e1d670f21441ec457fe5c3469781c101c36b4fe04b2ffc1a2e89eb630ff0165a
    • MD5 SHA1 SHA512 SSDEEP
    • Detect Xworm Payload

    • Mercurial Grabber Stealer

      Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

    • 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.

    • Looks for VirtualBox Guest Additions in registry

    • 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

    • Looks for VMWare Tools registry key

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • 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.

    • Maps connected drives based on registry

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks