Resubmissions

03-05-2024 16:55

240503-vffz8sec77 10

15-04-2024 14:29

240415-rtx9wsgf63 10

10-04-2024 15:57

240410-td2cqadc92 10

General

  • Target

    Computer Raper.exe

  • Size

    85.4MB

  • Sample

    240410-td2cqadc92

  • MD5

    bdb24ed9f869fcd462b316148514fc5b

  • SHA1

    83935122b626378a3149e9036cd751514add4b52

  • SHA256

    83875ea85b183c609c5ddcd92afe62265745192a417b80524f12741fc028aca0

  • SHA512

    12fdb77a75debeacbc4b98cac45d09a7bcc378bd9bd51bbc035838b99c1d595660d5c0961a2d041b2e8359f3b5b096f589d39453ada9874436411b94b8b0d611

  • SSDEEP

    1572864:NUkskQ1oOZrCqix58TkbajhXBFEQT9VotzcJ97:N/NQbCbmXXEUvoM97

Malware Config

Extracted

Path

C:\g1rFryAhrVg2xrt\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>O2EMibSy2qrZqE1aJ+euxmTglGSxyTnwOGvtGZ3/6t98t5ckY83MA7DFo5S3HRjmoDNgGLiyTkljbnJivD2iPO69Tv5mejhm85hVJHu22mJijMd5YWjg8KhjUo3j9f3u1HhS5B6DvYwHxO2SNMr2dq82XU4D5K5x2Nt4/o6EyeFZP9xQUDaYBOT6/6+/0z5j1Dc6PO1+tB6nSjAuPteCfkm10BVtJK1g5dYehqxoPWpFtBCRZgPlJ8C2Uqs2bXw45PwVTo2jfQiScVQdtEZg85DCm/g8FEqXyEDoyEVmakL/ltHM0M9s5tw1yq095yk0vTwnbEIVkN9Ywl2n97H7qw==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Targets

    • Target

      Computer Raper.exe

    • Size

      85.4MB

    • MD5

      bdb24ed9f869fcd462b316148514fc5b

    • SHA1

      83935122b626378a3149e9036cd751514add4b52

    • SHA256

      83875ea85b183c609c5ddcd92afe62265745192a417b80524f12741fc028aca0

    • SHA512

      12fdb77a75debeacbc4b98cac45d09a7bcc378bd9bd51bbc035838b99c1d595660d5c0961a2d041b2e8359f3b5b096f589d39453ada9874436411b94b8b0d611

    • SSDEEP

      1572864:NUkskQ1oOZrCqix58TkbajhXBFEQT9VotzcJ97:N/NQbCbmXXEUvoM97

    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    • Chimera

      Ransomware which infects local and network files, often distributed via Dropbox links.

    • Chimera Ransomware Loader DLL

      Drops/unpacks executable file which resembles Chimera's Loader.dll.

    • CryptoLocker

      Ransomware family with multiple variants.

    • Dharma

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

    • Fantom

      Ransomware which hides encryption process behind fake Windows Update screen.

    • Mimikatz

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

    • Troldesh, Shade, Encoder.858

      Troldesh is a ransomware spread by malspam.

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (382) 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

    • Contacts a large (1111) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Modifies Windows Firewall

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • 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.

    • Modifies WinLogon

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks