General

  • Target

    4355077d9e650cde600c29caf7fc7128ebb1f42331f130bbfe0e66265c67022a

  • Size

    214KB

  • Sample

    201229-l78q3rjxts

  • MD5

    b130cfd3d346bd719bd1e38f051768d2

  • SHA1

    de29701a3f0d6c24a6e10717e35379ed702db868

  • SHA256

    4355077d9e650cde600c29caf7fc7128ebb1f42331f130bbfe0e66265c67022a

  • SHA512

    33811ddb6ff9715e337bcbb0923b23cdc0e8ee8dca1cb7d85a175e5d40e7deb3c23fbe0010b829b8289de86268440e6806ee5df06447c8102707c84e8389222e

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: kevin.2021@yandex.com 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: kevin.2021@yandex.com Reserved email: maarten.2021@yandex.com Your personal ID: EEE-774-9F0 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.
Emails

kevin.2021@yandex.com

maarten.2021@yandex.com

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: kevin.2021@yandex.com 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: kevin.2021@yandex.com Reserved email: maarten.2021@yandex.com Your personal ID: 123-666-694 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.
Emails

kevin.2021@yandex.com

maarten.2021@yandex.com

Targets

    • Target

      4355077d9e650cde600c29caf7fc7128ebb1f42331f130bbfe0e66265c67022a

    • Size

      214KB

    • MD5

      b130cfd3d346bd719bd1e38f051768d2

    • SHA1

      de29701a3f0d6c24a6e10717e35379ed702db868

    • SHA256

      4355077d9e650cde600c29caf7fc7128ebb1f42331f130bbfe0e66265c67022a

    • SHA512

      33811ddb6ff9715e337bcbb0923b23cdc0e8ee8dca1cb7d85a175e5d40e7deb3c23fbe0010b829b8289de86268440e6806ee5df06447c8102707c84e8389222e

    • 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

    • Deletes itself

    • 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.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Deletion

2
T1107

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

2
T1490

Tasks