General

  • Target

    5508346443759616.zip

  • Size

    183KB

  • Sample

    201216-55c86gnq86

  • MD5

    c34c2f6e9a2b13c90d860fb8bf3c1412

  • SHA1

    b0817fa709b08016326f77afb5446891622f18ff

  • SHA256

    513c4fe0de5b8df83d8d99ce55f0c474600699591a4185fdb0b4ee5e9c718924

  • SHA512

    b1459661c26d5471356b5fa18d4f2104166d1874f7845845dd0e97ad8d924124a835cd1dd271f917a1142816d74a3572ea572be8ca3973eb1da376ccb05d6890

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: yongloun@tutanota.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: wiruxa@airmail.cc Reserved email: anygrishevich@yandex.ru Your personal ID: 187-7CE-4F1 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

wiruxa@airmail.cc

anygrishevich@yandex.ru

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: yongloun@tutanota.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: wiruxa@airmail.cc Reserved email: anygrishevich@yandex.ru Your personal ID: CEE-272-8B3 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

wiruxa@airmail.cc

anygrishevich@yandex.ru

Targets

    • Target

      438d83a22ed38bb2241a99b96d644826522b28327f63055840ee7632d8e95cd8

    • Size

      449KB

    • MD5

      574f031251f67bcc6ea9168364d2fbfd

    • SHA1

      f5d6140140829eaa550d2ef57b3ca8281b3d79bb

    • SHA256

      438d83a22ed38bb2241a99b96d644826522b28327f63055840ee7632d8e95cd8

    • SHA512

      d7234b117aabb6a50e8619d4bc3a6d283c53d7a7ee396a67f73985d6e09156ab2fc89ec52bddbd949d9236ecde081cc0123719a474b12966a5beaf910de8a15b

    • 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.

    • 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