Overview

overview

10

Static

static

8

Delivery-77426522.doc

windows7_x64

10

Delivery-77426522.doc

windows10_x64

10

Sharing

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General

  • Target
    Delivery-77426522.doc
  • Size 118KB
  • Sample201104-d43dfayxys
  • SHA256 0f81f4eb37083c821598ffd57cff12a082f19ca2de57c86faff65755ef332686
  • MD5 SHA1 SHA512
Score
10/10
buranevasionmacropersistenceransomwareupx

Malware Config

Extracted

Language

  • ps1

Source
URLs
  • exe.dropper

    http://vidrioindustrial.com/
  • exe.dropper

    http://forcecareer.com/
  • exe.dropper

    http://onw.kx1.in/
  • exe.dropper

    http://hos365llc.com/
  • exe.dropper

    http://testwebsite.taxauctioninvestors.com/
  • exe.dropper

    http://shradhajewellers.com/
  • exe.dropper

    https://educationmillion.com/
  • exe.dropper

    http://geozone.at/

Extracted

Path

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

  • 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] Your personal ID: 7E7-686-D4D 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

  • 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] Your personal ID: 2BE-C57-121 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
      Delivery-77426522.doc
    • Size 118KB
    • SHA256 0f81f4eb37083c821598ffd57cff12a082f19ca2de57c86faff65755ef332686
    • MD5 SHA1 SHA512
    Score
    10/10
    buranevasionpersistenceransomwareupx

    • Buran

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

      ransomwareburan

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Blacklisted process makes network request

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • UPX packed file

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

      upx

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • 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

    • Modifies service

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks