Overview

overview

10

Static

static

1

WannaCry

windows7-x64

3

WannaCry

windows10-2004-x64

10

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General

  • Target

    WannaCry

  • Size

    283KB

  • Sample

    241123-afgasaynbn

  • MD5

    7e823efb362154954c11c0b118d1fec9

  • SHA1

    3e3059e47ba9acd734748812b3492408c9eec8b6

  • SHA256

    19ace24dfe3b683d2fd677f0caf1bff8be290b6e23ec5d4e3640e30ef0694215

  • SHA512

    dd5eccc31fad6acce6df531ffad12c66c53bd20936d38692b4e9da02e7f2cabb053f7f42ba4dda79ffb224e5aabf58e1ea0f3823296ad4ad7091bd37fa0eaef3

  • SSDEEP

    6144:BvslxpOL/saqkPV9FemLtcsDSsmwj9hvZJT3CqbMrhryf65NRPaCieMjAkvCJv1S:xslxpOL/saqkPV9FemLtcsDSsmwj9hvF

Score
10/10
wannacrybootkitdefense_evasiondiscoveryevasionexecutionimpactpersistenceransomwarespywarestealertrojanworm

Malware Config

Extracted

Path

C:\Users\Admin\Downloads\@[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: 12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw 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

12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw

Targets

    • Target

      WannaCry

    • Size

      283KB

    • MD5

      7e823efb362154954c11c0b118d1fec9

    • SHA1

      3e3059e47ba9acd734748812b3492408c9eec8b6

    • SHA256

      19ace24dfe3b683d2fd677f0caf1bff8be290b6e23ec5d4e3640e30ef0694215

    • SHA512

      dd5eccc31fad6acce6df531ffad12c66c53bd20936d38692b4e9da02e7f2cabb053f7f42ba4dda79ffb224e5aabf58e1ea0f3823296ad4ad7091bd37fa0eaef3

    • SSDEEP

      6144:BvslxpOL/saqkPV9FemLtcsDSsmwj9hvZJT3CqbMrhryf65NRPaCieMjAkvCJv1S:xslxpOL/saqkPV9FemLtcsDSsmwj9hvF

    Score
    10/10
    discoverywannacrybootkitdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealertrojanworm

    • Modifies WinLogon for persistence

      persistence

    • UAC bypass

      evasiontrojan

    • Wannacry

      WannaCry is a ransomware cryptoworm.

      ransomwarewormwannacry

    • Wannacry family

      wannacry

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Disables Task Manager via registry modification

      evasion

    • Downloads MZ/PE file

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

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

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Modify Registry

6
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

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

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

3
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

1
T1490

Tasks