Resubmissions

20-01-2025 13:06

250120-qcldbszrer 1

20-01-2025 10:35

250120-mmq5savlht 10

General

  • Target

    XWorm v5.1-5.2.7z

  • Size

    54.5MB

  • Sample

    250120-mmq5savlht

  • MD5

    76219b3556e25086fc52f8e2b93fbd0c

  • SHA1

    066a0f875820e51a60c3552a06b7b97f8bab6bbc

  • SHA256

    fe6371034d55bb7583081b03f4aec7274f8340cfea4740325cb52e1c6ac77f6d

  • SHA512

    ccc974b8e446409c7940ef8314b2a912a2f8c0272721148d4dca5b739702106e69c9c7d106137a576b7a7a846d4f9ac770685a07d7a588ba34d0167acb07f104

  • SSDEEP

    786432:8IagoCEXKlCpMqIEJkseGG+5ELbzcFdcyt5/ks3FkAPYxpL+q7RRHEm+0NyvZZGl:8JgXCzIsGrPzcFrt1F3Yxxrr+4yvZE

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:7000

Mutex

Q0Vfr0It1WD6YvBs

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target

      XWorm v5.1-5.2.7z

    • Size

      54.5MB

    • MD5

      76219b3556e25086fc52f8e2b93fbd0c

    • SHA1

      066a0f875820e51a60c3552a06b7b97f8bab6bbc

    • SHA256

      fe6371034d55bb7583081b03f4aec7274f8340cfea4740325cb52e1c6ac77f6d

    • SHA512

      ccc974b8e446409c7940ef8314b2a912a2f8c0272721148d4dca5b739702106e69c9c7d106137a576b7a7a846d4f9ac770685a07d7a588ba34d0167acb07f104

    • SSDEEP

      786432:8IagoCEXKlCpMqIEJkseGG+5ELbzcFdcyt5/ks3FkAPYxpL+q7RRHEm+0NyvZZGl:8JgXCzIsGrPzcFrt1F3Yxxrr+4yvZE

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Boot or Logon Autostart Execution: Active Setup

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

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Reads user/profile data of web browsers

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

    • Uses the VBS compiler for execution

    • Enumerates connected drives

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

MITRE ATT&CK Enterprise v15

Tasks