General

  • Target

    jjsploit_8.12.2_x64_en-US.msi

  • Size

    6.3MB

  • Sample

    250407-fh2mdsyzcz

  • MD5

    d8be6f14b4dd7a85a5b5479e88b940da

  • SHA1

    4c1ed04a00fb4fc31cc4c10172d0e6f310faacef

  • SHA256

    c3daa5b6503c601bf868de990dc5fe055c266a7cba6e269115290c37fb8a4d05

  • SHA512

    77964855eddaf57ebf7810185eacf2bd40bfdd883473ac063223ea496744d81db678c171707d44cfe19077df1fcfb8888a54021fc6af7cb4547dcc464ce717ea

  • SSDEEP

    196608:3dNnRdvjsTOvHK19gO8xbecifaCI1L5N1JTLX4:t1RSavI9sbf8vKf

Malware Config

Extracted

Path

C:\Users\Admin\Downloads\!Please Read Me!.txt

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: 15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1 Next, please find the decrypt software on your desktop, an executable file named "!WannaDecryptor!.exe". If it does not exsit, download the software from the address below. (You may need to disable your antivirus for a while.) rar password: wcry123 Run and follow the instructions! �
Wallets

15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1

Extracted

Path

C:\f2dc0f58\DECRYPT_YOUR_FILES.HTML

Ransom Note
<html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>FcgdHYH2iUQJ3jCIUXgLqvmqzTfHZRLVrJ/geS64Wx6fd2NtGO78KEj9OMyKA2A+LDdAlPBWN3mglGt6gR3mDrsPZ2a15RaqzGF/cDHuwlCziQMvC8TFJpB5WAWa6HWas3kB0DM4UiyqZqfy++vLAGC2dHjNEU+rsrG75lqREGDPGdLrEvm3ddSB3uHEbSi0npjngKDQiYYXTYsEHkI3lDYJnM2RJEuzoNZF2sjopwWQXPO5W4f0fCwyxkXQwpOD05LBdU3PqFyAjXUsSj4y+kLlyXBGgn/vuTSbTnK1k/oa/lVEflX5lVgkwgQHnlzE5b+CYUxUTHvBUO6+AUP5gQ==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Targets

    • Target

      jjsploit_8.12.2_x64_en-US.msi

    • Size

      6.3MB

    • MD5

      d8be6f14b4dd7a85a5b5479e88b940da

    • SHA1

      4c1ed04a00fb4fc31cc4c10172d0e6f310faacef

    • SHA256

      c3daa5b6503c601bf868de990dc5fe055c266a7cba6e269115290c37fb8a4d05

    • SHA512

      77964855eddaf57ebf7810185eacf2bd40bfdd883473ac063223ea496744d81db678c171707d44cfe19077df1fcfb8888a54021fc6af7cb4547dcc464ce717ea

    • SSDEEP

      196608:3dNnRdvjsTOvHK19gO8xbecifaCI1L5N1JTLX4:t1RSavI9sbf8vKf

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Dharma family

    • Fantom

      Ransomware which hides encryption process behind fake Windows Update screen.

    • Fantom family

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

    • Mimikatz family

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • Wannacry family

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (719) files with added filename extension

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

    • mimikatz is an open source tool to dump credentials on Windows

    • Disables Task Manager via registry modification

    • Drops file in Drivers directory

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Drops startup file

    • Adds Run key to start application

    • Downloads MZ/PE file

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • 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.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks

OSZAR »