General

  • Target

    hci0xn0zip

  • Size

    3.3MB

  • Sample

    201104-cebgax7bdx

  • MD5

    d18bf81dbc8acce488abd633d8058cf5

  • SHA1

    1d6dcade355b4867e9435961655a9b9caa373528

  • SHA256

    4e0d1edb76747fd945b87dd18299298f0df719edbea946119d91db59a9b6527a

  • SHA512

    10a6b3994b1b0d37c9f3833e700baded6b89b0162078442b4de5a9747c23027d8943016c5941ba2e530ee5263b87c31a7714aa7bcb5051e5d63cf0a3cd88756f

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: kassmaster@danwin1210.me 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: kassmaster@danwin1210.me Reserved email: kassmaster@tutanota.com Your personal ID: 1DE-92F-1C8 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

kassmaster@danwin1210.me

kassmaster@tutanota.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: kassmaster@danwin1210.me 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: kassmaster@danwin1210.me Reserved email: kassmaster@tutanota.com Your personal ID: 478-E76-A52 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

kassmaster@danwin1210.me

kassmaster@tutanota.com

Targets

    • Target

      hci0xn0zip

    • Size

      3.3MB

    • MD5

      d18bf81dbc8acce488abd633d8058cf5

    • SHA1

      1d6dcade355b4867e9435961655a9b9caa373528

    • SHA256

      4e0d1edb76747fd945b87dd18299298f0df719edbea946119d91db59a9b6527a

    • SHA512

      10a6b3994b1b0d37c9f3833e700baded6b89b0162078442b4de5a9747c23027d8943016c5941ba2e530ee5263b87c31a7714aa7bcb5051e5d63cf0a3cd88756f

    • 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.

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • UPX packed file

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

    • 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.

    • Modifies service

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Modify Existing Service

1
T1031

Defense Evasion

File Deletion

2
T1107

Hidden Files and Directories

2
T1158

Modify Registry

3
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