Overview

overview

10

Static

static

3

silent_vira.exe

windows7_x64

7

silent_vira.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    silent_vira.exe

  • Size

    8.5MB

  • Sample

    220617-lrqjdabdgn

  • MD5

    20bb338530bdc925158c4fcefa33848e

  • SHA1

    f6ee865ab416a643a25c5779f9bddd90a03d8df4

  • SHA256

    a10c266793dc6e62ee6947981991c736383eaacad5cfc028aad1f16748b83a25

  • SHA512

    9aab612a80b04d897c48da8ae0e1c137d9f75eee78cb7661a63e74f001452e0f566bfa8bc8263f8054cae004ac9251d7d8e6c38d1382758bbc30d811f2697f2e

Score
10/10
wannacrydiscoverypersistencepyinstallerransomwarespywarestealerworm

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\@[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: 13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94 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

13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94

Targets

    • Target

      silent_vira.exe

    • Size

      8.5MB

    • MD5

      20bb338530bdc925158c4fcefa33848e

    • SHA1

      f6ee865ab416a643a25c5779f9bddd90a03d8df4

    • SHA256

      a10c266793dc6e62ee6947981991c736383eaacad5cfc028aad1f16748b83a25

    • SHA512

      9aab612a80b04d897c48da8ae0e1c137d9f75eee78cb7661a63e74f001452e0f566bfa8bc8263f8054cae004ac9251d7d8e6c38d1382758bbc30d811f2697f2e

    Score
    10/10
    wannacrydiscoverypersistenceransomwarespywarestealerworm

    • Wannacry

      WannaCry is a ransomware cryptoworm.

      ransomwarewormwannacry

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Drops startup file

    • 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

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Hidden Files and Directories

1
T1158

Privilege Escalation

Defense Evasion

File Deletion

1
T1107

File Permissions Modification

1
T1222

Modify Registry

3
T1112

Hidden Files and Directories

1
T1158

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Tasks