Overview

overview

9

Static

static

3

ProxyEnhancer.exe

windows10-2004-x64

ProxyEnhancer.exe

windows11-ltsc_2024-x64

Sharing

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General

  • Target
    ProxyEnhancer.exe
  • Size 48.0MB
  • Sample260626-bln39ag16m
  • SHA256 e157cbb43c4da0e1f359bc6a2350e7f53d6b6fabd413e8072738fb4ec32a85ef
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
bootkitdefense_evasionexecutionpersistencepyinstaller

Malware Config

Targets

    • Target
      ProxyEnhancer.exe
    • Size 48.0MB
    • SHA256 e157cbb43c4da0e1f359bc6a2350e7f53d6b6fabd413e8072738fb4ec32a85ef
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    bootkitdefense_evasionexecutionpersistencepyinstaller

    • Modifies boot configuration data using bcdedit

    • Disables use of System Restore points

      defense_evasion

    • Event Triggered Execution: Image File Execution Options Injection

      persistence

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

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

    • 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

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

1
T1546

Image File Execution Options Injection

1
T1546.012

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

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

Event Triggered Execution

1
T1546

Image File Execution Options Injection

1
T1546.012

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Query Registry

1
T1012

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Inhibit System Recovery

1
T1490

Tasks