General

  • Target

    12048.exe

  • Size

    250KB

  • Sample

    211208-nnvp2aaabr

  • MD5

    41fd1099e6e46ddd0015c7c0ed9425a5

  • SHA1

    9f9ee018b7deeffa22ab15ffac3326fddc70a0a2

  • SHA256

    99ee7cf74c8de999f2a1cc8cefacad3c866a86e78c87a56323729bfad967a4e9

  • SHA512

    3c7962c1e699046f7be9005a5ba2ece6f56f6e07fdae0f5ad0cb1c83aa55159f21f506f5c6dcf1490f35e00e72fcb1c340f047459f0f339a90303801dca95a9b

Malware Config

Extracted

Path

C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

Family

buran

Ransom Note
!!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. To be sure we have the decryptor and it works you can send an email: [email protected] and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? Write to email: [email protected] Reserved email: [email protected] Reserved email: [email protected] Your personal ID: 1E4-136-9F3 Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Extracted

Path

C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

Family

buran

Ransom Note
!!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. To be sure we have the decryptor and it works you can send an email: [email protected] and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? Write to email: [email protected] Reserved email: [email protected] Reserved email: [email protected] Your personal ID: 2E6-2F4-91B Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Targets

    • Target

      12048.exe

    • Size

      250KB

    • MD5

      41fd1099e6e46ddd0015c7c0ed9425a5

    • SHA1

      9f9ee018b7deeffa22ab15ffac3326fddc70a0a2

    • SHA256

      99ee7cf74c8de999f2a1cc8cefacad3c866a86e78c87a56323729bfad967a4e9

    • SHA512

      3c7962c1e699046f7be9005a5ba2ece6f56f6e07fdae0f5ad0cb1c83aa55159f21f506f5c6dcf1490f35e00e72fcb1c340f047459f0f339a90303801dca95a9b

    • Buran

      Ransomware-as-a-service based on the VegaLocker family first identified in 2019.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Loads dropped DLL

    • Adds Run key to start application

    • 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.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v6

Tasks