Resubmissions

21-11-2024 20:20

241121-y4nlrs1nar 10

General

  • Target

    1c1510d9d6c4c46067dbb55056a720bc9e69ac47a4e66c6765886a25d4f6d4cc

  • Size

    5.8MB

  • Sample

    241121-y4nlrs1nar

  • MD5

    6192ed4726e46be98934d1e4ebebb7e3

  • SHA1

    df8badbe186b9ca3cd88bc4014a3a4aac8ac1736

  • SHA256

    1c1510d9d6c4c46067dbb55056a720bc9e69ac47a4e66c6765886a25d4f6d4cc

  • SHA512

    b7a8f9cc0d3f214272e3b51bc02f14db11d5c2c1bb0177c31a8dca7fd1f1fa1e08aa6ec6c9b9de652455fc5fbe3abb939d0c591cece2e075adbe963fb6ca0969

  • SSDEEP

    98304:0wREfWuXTo8ToIebV6oHFE9xI6ohWhPSwVrGiGfm8EOuq2NmF:MfWW8uGY9xVoY9zELHPuqimF

Malware Config

Extracted

Family

xworm

Mutex

0LLXgeoJ4l4QFpG6

Attributes
  • install_file

    USBDriver.exe

  • pastebin_url

    https://pastebin.com/raw/FrUYqTuA

aes.plain

Targets

    • Target

      1c1510d9d6c4c46067dbb55056a720bc9e69ac47a4e66c6765886a25d4f6d4cc

    • Size

      5.8MB

    • MD5

      6192ed4726e46be98934d1e4ebebb7e3

    • SHA1

      df8badbe186b9ca3cd88bc4014a3a4aac8ac1736

    • SHA256

      1c1510d9d6c4c46067dbb55056a720bc9e69ac47a4e66c6765886a25d4f6d4cc

    • SHA512

      b7a8f9cc0d3f214272e3b51bc02f14db11d5c2c1bb0177c31a8dca7fd1f1fa1e08aa6ec6c9b9de652455fc5fbe3abb939d0c591cece2e075adbe963fb6ca0969

    • SSDEEP

      98304:0wREfWuXTo8ToIebV6oHFE9xI6ohWhPSwVrGiGfm8EOuq2NmF:MfWW8uGY9xVoY9zELHPuqimF

    • Detect Xworm Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

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

    • Creates new service(s)

    • Sets service image path in registry

    • Stops running service(s)

    • 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

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Legitimate hosting services abused for malware hosting/C2

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks