General

  • Target

    4fffddcc02c74bfbf4f6c84e9467c6f702e2a0b51c51806c4c1f042b8dd578c0

  • Size

    264KB

  • Sample

    220719-r29ynafecn

  • MD5

    915c29fe9261df54fdc84ec3bebc429d

  • SHA1

    75a5e1e66eea7d3ae9119322c0807aa0d033b03b

  • SHA256

    4fffddcc02c74bfbf4f6c84e9467c6f702e2a0b51c51806c4c1f042b8dd578c0

  • SHA512

    b1307bb10ac6621ad303c9d75d75eec4446e34a8d8ad9705025785498f4c032f00c19bd36d356823f679fa55ef58cd620ca2533b35a55ead2f1bdb351f18bf0b

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail admin@fentex.net Write this ID in the title of your message 824C3649 In case of no answer in 24 hours write us to theese e-mails: admin@fentex.world You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ 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

admin@fentex.net

admin@fentex.world

Extracted

Path

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail admin@fentex.net Write this ID in the title of your message 62154DEE In case of no answer in 24 hours write us to theese e-mails: admin@fentex.world You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ 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

admin@fentex.net

admin@fentex.world

Targets

    • Target

      4fffddcc02c74bfbf4f6c84e9467c6f702e2a0b51c51806c4c1f042b8dd578c0

    • Size

      264KB

    • MD5

      915c29fe9261df54fdc84ec3bebc429d

    • SHA1

      75a5e1e66eea7d3ae9119322c0807aa0d033b03b

    • SHA256

      4fffddcc02c74bfbf4f6c84e9467c6f702e2a0b51c51806c4c1f042b8dd578c0

    • SHA512

      b1307bb10ac6621ad303c9d75d75eec4446e34a8d8ad9705025785498f4c032f00c19bd36d356823f679fa55ef58cd620ca2533b35a55ead2f1bdb351f18bf0b

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Drops file in System32 directory

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

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

2
T1490

Tasks