Overview

overview

10

Static

static

10

XClient.exe

windows10-2004-x64

XClient.exe

windows11-ltsc_2024-x64

Sharing

Copy URL Twitter E-mail

General

  • Target
    XClient.exe
  • Size 31KB
  • Sample260827-klwb1agh47
  • SHA256 533ba5a67cf3e9e60374c53368706df69c43ec3c9d4bbbfabc9373dd2e1d8de9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
xwormbootkitdefense_evasiondiscoverypersistencerattrojan

Malware Config

Extracted

Family

  • xworm

Version

  • 3.0

C2

  • 5.tcp.cpolar.cn:10648

Mutex

  • DwpYUxbxWoCYBwry

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target
      XClient.exe
    • Size 31KB
    • SHA256 533ba5a67cf3e9e60374c53368706df69c43ec3c9d4bbbfabc9373dd2e1d8de9
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    bootkitdefense_evasiondiscoveryxwormpersistencerattrojan

    • Detect Xworm Payload

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Disables Task Manager via registry modification

      defense_evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery

    • Writes to the Master Boot Record (MBR)

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

      bootkitpersistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks