Overview

overview

10

Static

static

3

VxnCleaner.exe

windows7-x64

10

VxnCleaner.exe

windows10-2004-x64

10

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General

  • Target

    VxnCleaner.exe

  • Size

    236KB

  • Sample

    241224-v8anxssqf1

  • MD5

    077e0305b131cd52856e2064bf7524f9

  • SHA1

    ab78b7583fe398137839e52797d3f618d4b56c3e

  • SHA256

    a34d680823cbb7726c179591ba5a4a251e6761b20e748a7478939d9ce96bcc86

  • SHA512

    e5bd89058814cafd7d174c29f5d3c24e8088a2fce080d92e2fa7b1f9e9a3a5a0fb7cc962ba3cf0be2f920bfbf3d33a7e8c962d6f7c5488e3085d1cb23d16cc6b

  • SSDEEP

    6144:cz18GYHZfBQZbVGW8h18GYHZfBQZbVGW8:czJYsbkhJYsbk

Score
10/10
wannacryxwormdefense_evasiondiscoveryexecutionimpactpersistenceransomwareratspywarestealertrojanworm

Malware Config

Extracted

Family

xworm

C2

side-sean.gl.at.ply.gg:37533

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    conhost.exe

Extracted

Path

C:\Users\Admin\Documents\@[email protected]

Family

wannacry

Ransom Note
Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn Next, please find an application file named "@[email protected]". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �
Wallets

115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn

Targets

    • Target

      VxnCleaner.exe

    • Size

      236KB

    • MD5

      077e0305b131cd52856e2064bf7524f9

    • SHA1

      ab78b7583fe398137839e52797d3f618d4b56c3e

    • SHA256

      a34d680823cbb7726c179591ba5a4a251e6761b20e748a7478939d9ce96bcc86

    • SHA512

      e5bd89058814cafd7d174c29f5d3c24e8088a2fce080d92e2fa7b1f9e9a3a5a0fb7cc962ba3cf0be2f920bfbf3d33a7e8c962d6f7c5488e3085d1cb23d16cc6b

    • SSDEEP

      6144:cz18GYHZfBQZbVGW8h18GYHZfBQZbVGW8:czJYsbkhJYsbk

    Score
    10/10
    wannacryxwormdefense_evasiondiscoveryexecutionimpactpersistenceransomwareratspywarestealertrojanworm

    • Detect Xworm Payload

    • Wannacry

      WannaCry is a ransomware cryptoworm.

      ransomwarewormwannacry

    • Wannacry family

      wannacry

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Xworm family

      xworm

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence

    • File and Directory Permissions Modification: Windows File and Directory Permissions Modification

      defense_evasion

    • Looks up external IP address via web service

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

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

      defense_evasion

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Direct Volume Access

1
T1006

File and Directory Permissions Modification

2
T1222

Windows File and Directory Permissions Modification

1
T1222.001

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

3
T1112

Obfuscated Files or Information

1
T1027

Command Obfuscation

1
T1027.010

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

2
T1490

Tasks