Overview

overview

9

Static

static

3

Readme.pdf.exe

windows10-2004-x64

9

Readme.pdf.exe

windows11-ltsc_2024-x64

9

Sharing

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General

  • Target
    Readme.pdf.exe
  • Size 41.3MB
  • Sample260622-qvzzfacv3l
  • SHA256 d56b3119754f14e694f9c7485bf7d2d81eac844e197ad67d7d62d9aef5f75b02
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
credential_accessdiscoveryexecutionpersistencepyinstallerransomwarespywarestealer

Malware Config

Targets

    • Target
      Readme.pdf.exe
    • Size 41.3MB
    • SHA256 d56b3119754f14e694f9c7485bf7d2d81eac844e197ad67d7d62d9aef5f75b02
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    credential_accessdiscoveryexecutionpersistencepyinstallerransomwarespywarestealer

    • Renames multiple (5902) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

      credential_accessstealer

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

    • Sets desktop wallpaper using registry

      ransomware
    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

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

Modify Registry

2
T1112

Credential Access

Credentials from Password Stores

2
T1555

Credentials from Web Browsers

1
T1555.003

Windows Credential Manager

1
T1555.004

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Query Registry

1
T1012

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Tasks