Overview

overview

10

Static

static

3

fxtun.exe

windows10-2004-x64

10

fxtun.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    fxtun.exe
  • Size 541KB
  • Sample261017-1yattszzft
  • SHA256 6126ea73d08e4edf6065beb4f47df3ebaefe91b77fd51f4b1a4b3ce508863e1c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
collectiondiscoveryexecutionpersistenceprivilege_escalationspywarestealer

Malware Config

Targets

    • Target
      fxtun.exe
    • Size 541KB
    • SHA256 6126ea73d08e4edf6065beb4f47df3ebaefe91b77fd51f4b1a4b3ce508863e1c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    collectiondiscoveryexecutionpersistenceprivilege_escalationspywarestealer

    • Modifies WinLogon for persistence

      persistence

    • Event Triggered Execution: AppInit DLLs

      Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

      persistenceprivilege_escalation

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

      spywarestealer

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Accesses Microsoft Outlook profiles

      collection

    • Checks installed software on the system

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

      discovery

    • Looks up external IP address via web service

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

      discovery

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

2
T1546

AppInit DLLs

1
T1546.010

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

2
T1546

AppInit DLLs

1
T1546.010

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

2
T1552

Credentials In Files

1
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Browser Information Discovery

1
T1217

Query Registry

5
T1012

System Information Discovery

4
T1082

System Network Configuration Discovery

3
T1016

Internet Connection Discovery

1
T1016.001

Wi-Fi Discovery

1
T1016.002

System Time Discovery

1
T1124

Lateral Movement

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Command and Control

Exfiltration

Impact

Tasks