Overview

overview

10

Static

static

3

74512.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    74512.exe
  • Size 117.8MB
  • Sample260623-1ffblagw2z
  • SHA256 84927591d4dffddfc088a67766a9f3c61cefe6a39167aed21438de17121adacf
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwarediscoveryexecutionpersistencepyinstallerransomwarespyware

Malware Config

Extracted

Path

  • C:\Users\Admin\Documents\UnregisterWrite.xml

Ransom Note
  • ======================================================================== COFFIN FLEET — YOUR FILES HAVE BEEN ENCRYPTED ======================================================================== This file has been encrypted with AES-256-GCM double-layer encryption. TO RECOVER YOUR FILES: • Send 300 USD in Bitcoin to: 3BKuiDHNSbdCdC8fHTUxCB4GRBiuKUrMzr • Contact us with your payment proof to receive the decryption key. DEADLINE: 2026-06-26 17:44 (price doubles after expiry) DO NOT: • Rename, move, or delete .fleet files • Use file recovery tools (they cannot recover AES-256-GCM data) • Contact law enforcement See !HOW_TO_RECOVER.html in this folder for full instructions. ========================================================================

Targets

    • Target
      74512.exe
    • Size 117.8MB
    • SHA256 84927591d4dffddfc088a67766a9f3c61cefe6a39167aed21438de17121adacf
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    adwarediscoveryexecutionpersistenceransomwarespyware

    • Modifies WinLogon for persistence

      persistence

    • Boot or Logon Autostart Execution: Active Setup

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

      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.

    • Enumerates connected drives

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

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1

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

3
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

4
T1112

Credential Access

Discovery

Peripheral Device Discovery

2
T1120

Query Registry

3
T1012

System Information Discovery

3
T1082

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks